Loading ...
Sorry, an error occurred while loading the content.

Wish List

Expand Messages
  • joe price
    Christos, Dave s UHFSDR board works OK through 2 meters would you consider the following changes to PowerSDR? 1 When clicking the 2 Meter box go directly to
    Message 1 of 20 , Dec 29, 2008
    • 0 Attachment
      Christos,
      Dave's UHFSDR board works OK through 2 meters would you consider
      the following changes to PowerSDR?

      1 When clicking the 2 Meter box go directly to 144mhz without
      using rhe Signal generator mode.
      2 Save image cal data for both TX and RX for 2 Meters.
      3 I'm not sure Smooth tuning is enabled can you check?
      4 Add a adjustable delay to keep Receiver AGC from being
      activated wnen returning to receive from transmit.
      5 For people in countries that have the 4 meter band the same as above.

      Thanks Joe wa9cgz
    • Christos Nikolaou
      Joe, These are good news, at least I have not built (yet) my UHFSDR so I could not test it. Regarding the wish list, notes are taken and will be incorporated.
      Message 2 of 20 , Dec 30, 2008
      • 0 Attachment
        Joe,

        These are good news, at least I have not built (yet) my UHFSDR so I
        could not test it.

        Regarding the wish list, notes are taken and will be incorporated.

        73,
        Christos SV1EIA

        PS
        It seems that it might be a good idea after all to have an adjustable
        delay in software for the TxRx tournaround.
        :-)


        --- In powersdr-iq@yahoogroups.com, "joe price" <joeprice@...> wrote:
        >
        > Christos,
        > Dave's UHFSDR board works OK through 2 meters would you consider
        > the following changes to PowerSDR?
        >
        > 1 When clicking the 2 Meter box go directly to 144mhz without
        > using rhe Signal generator mode.
        > 2 Save image cal data for both TX and RX for 2 Meters.
        > 3 I'm not sure Smooth tuning is enabled can you check?
        > 4 Add a adjustable delay to keep Receiver AGC from being
        > activated wnen returning to receive from transmit.
        > 5 For people in countries that have the 4 meter band the same as above.
        >
        > Thanks Joe wa9cgz
        >
      • Luis Cupido
        Is there an easy way to buy si570 s ? tks. Luis Cupido ct1dmk.
        Message 3 of 20 , Dec 31, 2008
        • 0 Attachment
          Is there an easy way to buy si570's ?
          tks.

          Luis Cupido
          ct1dmk.
        • Alan
          ... From: Luis Cupido ... http://www.softrockradio.org/si570 and http://www.sdr-kits.net/ 73 Alan G4ZFQ
          Message 4 of 20 , Dec 31, 2008
          • 0 Attachment
            ----- Original Message -----
            From: "Luis Cupido"

            > Is there an easy way to buy si570's ?
            > tks.

            http://www.softrockradio.org/si570 and
            http://www.sdr-kits.net/

            73 Alan G4ZFQ
          • Luis Cupido
            tks, lc
            Message 5 of 20 , Dec 31, 2008
            • 0 Attachment
              tks,
              lc


              Alan wrote:
              > ----- Original Message -----
              > From: "Luis Cupido"
              >
              >> Is there an easy way to buy si570's ?
              >> tks.
              >
              > http://www.softrockradio.org/si570 and
              > http://www.sdr-kits.net/
              >
              > 73 Alan G4ZFQ
              >
              > ------------------------------------
              >
              > Yahoo! Groups Links
              >
              >
              >
              >
            • Christos Nikolaou
              Luis, You can also have Si570 from www.box73.de they can provide not only the plain grade-C but also grade-B with the extended frequency range. 73, Christos
              Message 6 of 20 , Dec 31, 2008
              • 0 Attachment
                Luis,

                You can also have Si570 from www.box73.de they can provide not only
                the plain grade-C but also grade-B with the extended frequency range.

                73,
                Christos SV1EIA



                --- In powersdr-iq@yahoogroups.com, Luis Cupido <cupido@...> wrote:
                >
                > tks,
                > lc
                >
                >
                > Alan wrote:
                > > ----- Original Message -----
                > > From: "Luis Cupido"
                > >
                > >> Is there an easy way to buy si570's ?
                > >> tks.
                > >
                > > http://www.softrockradio.org/si570 and
                > > http://www.sdr-kits.net/
                > >
                > > 73 Alan G4ZFQ
                > >
                > > ------------------------------------
                > >
                > > Yahoo! Groups Links
                > >
                > >
                > >
                > >
                >
              • Luis Cupido
                Mny.Tks. Indeed I m willing to get the B Geeeeeee, wish it was cheaper :-( 73 s Luis Cupido. ct1dmk.
                Message 7 of 20 , Jan 1, 2009
                • 0 Attachment
                  Mny.Tks.
                  Indeed I'm willing to get the B
                  Geeeeeee, wish it was cheaper :-(

                  73's

                  Luis Cupido.
                  ct1dmk.


                  Christos Nikolaou wrote:
                  > Luis,
                  >
                  > You can also have Si570 from www.box73.de they can provide not only
                  > the plain grade-C but also grade-B with the extended frequency range.
                  >
                  > 73,
                  > Christos SV1EIA
                  >
                  >
                  >
                  > --- In powersdr-iq@yahoogroups.com, Luis Cupido <cupido@...> wrote:
                  >> tks,
                  >> lc
                  >>
                  >>
                  >> Alan wrote:
                  >>> ----- Original Message -----
                  >>> From: "Luis Cupido"
                  >>>
                  >>>> Is there an easy way to buy si570's ?
                  >>>> tks.
                  >>> http://www.softrockradio.org/si570 and
                  >>> http://www.sdr-kits.net/
                  >>>
                  >>> 73 Alan G4ZFQ
                  >>>
                  >>> ------------------------------------
                  >>>
                  >>> Yahoo! Groups Links
                  >>>
                  >>>
                  >>>
                  >>>
                  >
                  >
                  >
                  > ------------------------------------
                  >
                  > Yahoo! Groups Links
                  >
                  >
                  >
                  >
                • Luis Cupido
                  Hi, Anyone out there knows anything similar to the silabs osc but using an external quartz. The possibility of locking the radio to a 10MHz external reference
                  Message 8 of 20 , Jan 1, 2009
                  • 0 Attachment
                    Hi,

                    Anyone out there knows anything similar to the
                    silabs osc but using an external quartz.
                    The possibility of locking the radio to a 10MHz
                    external reference is something I would like.

                    (I say some cypress chips but they did not convincved
                    me)

                    Any thoughts ?

                    Luis Cupido.
                    ct1dmk.


                    Luis Cupido wrote:
                    > Mny.Tks.
                    > Indeed I'm willing to get the B
                    > Geeeeeee, wish it was cheaper :-(
                    >
                    > 73's
                    >
                    > Luis Cupido.
                    > ct1dmk.
                    >
                    >
                    > Christos Nikolaou wrote:
                    >> Luis,
                    >>
                    >> You can also have Si570 from www.box73.de they can provide not only
                    >> the plain grade-C but also grade-B with the extended frequency range.
                    >>
                    >> 73,
                    >> Christos SV1EIA
                    >>
                    >>
                    >>
                    >> --- In powersdr-iq@yahoogroups.com, Luis Cupido <cupido@...> wrote:
                    >>> tks,
                    >>> lc
                    >>>
                    >>>
                    >>> Alan wrote:
                    >>>> ----- Original Message -----
                    >>>> From: "Luis Cupido"
                    >>>>
                    >>>>> Is there an easy way to buy si570's ?
                    >>>>> tks.
                    >>>> http://www.softrockradio.org/si570 and
                    >>>> http://www.sdr-kits.net/
                    >>>>
                    >>>> 73 Alan G4ZFQ
                    >>>>
                    >>>> ------------------------------------
                    >>>>
                    >>>> Yahoo! Groups Links
                    >>>>
                    >>>>
                    >>>>
                    >>>>
                    >>
                    >>
                    >> ------------------------------------
                    >>
                    >> Yahoo! Groups Links
                    >>
                    >>
                    >>
                    >>
                    >
                    > ------------------------------------
                    >
                    > Yahoo! Groups Links
                    >
                    >
                    >
                    >
                  • Luis Cupido
                    I saw some cypress chips but they did not convinced me. (typos)
                    Message 9 of 20 , Jan 1, 2009
                    • 0 Attachment
                      I saw some cypress chips but they did not convinced
                      me. (typos)

                      Luis Cupido wrote:
                      > Hi,
                      >
                      > Anyone out there knows anything similar to the
                      > silabs osc but using an external quartz.
                      > The possibility of locking the radio to a 10MHz
                      > external reference is something I would like.
                      >
                      > (I say some cypress chips but they did not convincved
                      > me)
                      >
                      > Any thoughts ?
                      >
                      > Luis Cupido.
                      > ct1dmk.
                      >
                      >
                      > Luis Cupido wrote:
                      >> Mny.Tks.
                      >> Indeed I'm willing to get the B
                      >> Geeeeeee, wish it was cheaper :-(
                      >>
                      >> 73's
                      >>
                      >> Luis Cupido.
                      >> ct1dmk.
                      >>
                      >>
                      >> Christos Nikolaou wrote:
                      >>> Luis,
                      >>>
                      >>> You can also have Si570 from www.box73.de they can provide not only
                      >>> the plain grade-C but also grade-B with the extended frequency range.
                      >>>
                      >>> 73,
                      >>> Christos SV1EIA
                      >>>
                      >>>
                      >>>
                      >>> --- In powersdr-iq@yahoogroups.com, Luis Cupido <cupido@...> wrote:
                      >>>> tks,
                      >>>> lc
                      >>>>
                      >>>>
                      >>>> Alan wrote:
                      >>>>> ----- Original Message -----
                      >>>>> From: "Luis Cupido"
                      >>>>>
                      >>>>>> Is there an easy way to buy si570's ?
                      >>>>>> tks.
                      >>>>> http://www.softrockradio.org/si570 and
                      >>>>> http://www.sdr-kits.net/
                      >>>>>
                      >>>>> 73 Alan G4ZFQ
                      >>>>>
                      >>>>> ------------------------------------
                      >>>>>
                      >>>>> Yahoo! Groups Links
                      >>>>>
                      >>>>>
                      >>>>>
                      >>>>>
                      >>>
                      >>> ------------------------------------
                      >>>
                      >>> Yahoo! Groups Links
                      >>>
                      >>>
                      >>>
                      >>>
                      >> ------------------------------------
                      >>
                      >> Yahoo! Groups Links
                      >>
                      >>
                      >>
                      >>
                      >
                      > ------------------------------------
                      >
                      > Yahoo! Groups Links
                      >
                      >
                      >
                      >
                    • Dave - WB6DHW
                      How about the Si571. It is an Si570 with an FM input to the VCO. Dave - WB6DHW
                      Message 10 of 20 , Jan 1, 2009
                      • 0 Attachment
                        How about the Si571. It is an Si570 with an FM input to the VCO.

                        Dave - WB6DHW
                        <http://wb6dhw.com>

                        Luis Cupido wrote:
                        > I saw some cypress chips but they did not convinced
                        > me. (typos)
                        >
                        > Luis Cupido wrote:
                        >
                        >> Hi,
                        >>
                        >> Anyone out there knows anything similar to the
                        >> silabs osc but using an external quartz.
                        >> The possibility of locking the radio to a 10MHz
                        >> external reference is something I would like.
                        >>
                        >> (I say some cypress chips but they did not convincved
                        >> me)
                        >>
                        >>
                      • Graham Haddock
                        Luis: What range of output frequencies do you want? A DDS like a 9951 can directly use a 10 MHz input and put out frequencies up to 200 MHz or so. ... ==
                        Message 11 of 20 , Jan 1, 2009
                        • 0 Attachment
                          Luis:
                          What range of output frequencies do you want?
                          A DDS like a 9951 can directly use a 10 MHz
                          input and put out frequencies up to 200 MHz or so.
                          --- Graham / KE9H

                          ==

                          Luis Cupido wrote:
                          >
                          > Hi,
                          >
                          > Anyone out there knows anything similar to the
                          > silabs osc but using an external quartz.
                          > The possibility of locking the radio to a 10MHz
                          > external reference is something I would like.
                          >
                          > (I say some cypress chips but they did not convincved
                          > me)
                          >
                          > Any thoughts ?
                          >
                          > Luis Cupido.
                          > ct1dmk.
                          >
                          > Luis Cupido wrote:
                          > > Mny.Tks.
                          > > Indeed I'm willing to get the B
                          > > Geeeeeee, wish it was cheaper :-(
                          > >
                          > > 73's
                          > >
                          > > Luis Cupido.
                          > > ct1dmk.
                          > >
                          > >
                          > > Christos Nikolaou wrote:
                          > >> Luis,
                          > >>
                          > >> You can also have Si570 from www.box73.de they can provide not only
                          > >> the plain grade-C but also grade-B with the extended frequency range.
                          > >>
                          > >> 73,
                          > >> Christos SV1EIA
                          > >>
                          > >>
                          > >>
                          > >> --- In powersdr-iq@yahoogroups.com
                          > <mailto:powersdr-iq%40yahoogroups.com>, Luis Cupido <cupido@...> wrote:
                          > >>> tks,
                          > >>> lc
                          > >>>
                          > >>>
                          > >>> Alan wrote:
                          > >>>> ----- Original Message -----
                          > >>>> From: "Luis Cupido"
                          > >>>>
                          > >>>>> Is there an easy way to buy si570's ?
                          > >>>>> tks.
                          > >>>> http://www.softrockradio.org/si570
                          > <http://www.softrockradio.org/si570> and
                          > >>>> http://www.sdr-kits.net/ <http://www.sdr-kits.net/>
                          > >>>>
                          > >>>> 73 Alan G4ZFQ
                          > >>>>
                          > >>>> ------------------------------------
                          > >>>>
                          > >>>> Yahoo! Groups Links
                          > >>>>
                          > >>>>
                          > >>>>
                          > >>>>
                          > >>
                          > >>
                          > >> ------------------------------------
                          > >>
                          > >> Yahoo! Groups Links
                          > >>
                          > >>
                          > >>
                          > >>
                          > >
                          > > ------------------------------------
                          > >
                          > > Yahoo! Groups Links
                          > >
                          > >
                          > >
                          > >
                          >
                          >
                        • Luis Cupido
                          Graham, It is the simplicity of the part that I love about the si570. Yes I can use a DDS, actually that was may initial design until I steped into this si570
                          Message 12 of 20 , Jan 1, 2009
                          • 0 Attachment
                            Graham,

                            It is the simplicity of the part that I love about
                            the si570. Yes I can use a DDS, actually that was may
                            initial design until I steped into this si570
                            now I'm all but indecisions :-(
                            I'm looking to make an I and Q LO from 28 to 146MHz.

                            Luis Cupido.
                            ct1dmk.

                            Graham Haddock wrote:
                            > Luis:
                            > What range of output frequencies do you want?
                            > A DDS like a 9951 can directly use a 10 MHz
                            > input and put out frequencies up to 200 MHz or so.
                            > --- Graham / KE9H
                            >
                            > ==
                            >
                            > Luis Cupido wrote:
                            >> Hi,
                            >>
                            >> Anyone out there knows anything similar to the
                            >> silabs osc but using an external quartz.
                            >> The possibility of locking the radio to a 10MHz
                            >> external reference is something I would like.
                            >>
                            >> (I say some cypress chips but they did not convincved
                            >> me)
                            >>
                            >> Any thoughts ?
                            >>
                            >> Luis Cupido.
                            >> ct1dmk.
                            >>
                            >> Luis Cupido wrote:
                            >>> Mny.Tks.
                            >>> Indeed I'm willing to get the B
                            >>> Geeeeeee, wish it was cheaper :-(
                            >>>
                            >>> 73's
                            >>>
                            >>> Luis Cupido.
                            >>> ct1dmk.
                            >>>
                            >>>
                            >>> Christos Nikolaou wrote:
                            >>>> Luis,
                            >>>>
                            >>>> You can also have Si570 from www.box73.de they can provide not only
                            >>>> the plain grade-C but also grade-B with the extended frequency range.
                            >>>>
                            >>>> 73,
                            >>>> Christos SV1EIA
                            >>>>
                            >>>>
                            >>>>
                            >>>> --- In powersdr-iq@yahoogroups.com
                            >> <mailto:powersdr-iq%40yahoogroups.com>, Luis Cupido <cupido@...> wrote:
                            >>>>> tks,
                            >>>>> lc
                            >>>>>
                            >>>>>
                            >>>>> Alan wrote:
                            >>>>>> ----- Original Message -----
                            >>>>>> From: "Luis Cupido"
                            >>>>>>
                            >>>>>>> Is there an easy way to buy si570's ?
                            >>>>>>> tks.
                            >>>>>> http://www.softrockradio.org/si570
                            >> <http://www.softrockradio.org/si570> and
                            >>>>>> http://www.sdr-kits.net/ <http://www.sdr-kits.net/>
                            >>>>>>
                            >>>>>> 73 Alan G4ZFQ
                            >>>>>>
                            >>>>>> ------------------------------------
                            >>>>>>
                            >>>>>> Yahoo! Groups Links
                            >>>>>>
                            >>>>>>
                            >>>>>>
                            >>>>>>
                            >>>>
                            >>>> ------------------------------------
                            >>>>
                            >>>> Yahoo! Groups Links
                            >>>>
                            >>>>
                            >>>>
                            >>>>
                            >>> ------------------------------------
                            >>>
                            >>> Yahoo! Groups Links
                            >>>
                            >>>
                            >>>
                            >>>
                            >>
                            >
                            >
                            >
                            > ------------------------------------
                            >
                            > Yahoo! Groups Links
                            >
                            >
                            >
                            >
                          • Luis Cupido
                            Hi Dave, Since I want to be anywhere in frequency can t really lock it to 10MHz easily. Wish silabs made a version with external xtal also ;-). Luis Cupido.
                            Message 13 of 20 , Jan 1, 2009
                            • 0 Attachment
                              Hi Dave,
                              Since I want to be anywhere in frequency
                              can't really lock it to 10MHz easily.
                              Wish silabs made a version with external xtal also ;-).

                              Luis Cupido.
                              ct1dmk.


                              P.S. nice design your UHFSDR congrats.



                              Dave - WB6DHW wrote:
                              > How about the Si571. It is an Si570 with an FM input to the VCO.
                              >
                              > Dave - WB6DHW
                              > <http://wb6dhw.com>
                              >
                              > Luis Cupido wrote:
                              >> I saw some cypress chips but they did not convinced
                              >> me. (typos)
                              >>
                              >> Luis Cupido wrote:
                              >>
                              >>> Hi,
                              >>>
                              >>> Anyone out there knows anything similar to the
                              >>> silabs osc but using an external quartz.
                              >>> The possibility of locking the radio to a 10MHz
                              >>> external reference is something I would like.
                              >>>
                              >>> (I say some cypress chips but they did not convincved
                              >>> me)
                              >>>
                              >>>
                              >
                              >
                              > ------------------------------------
                              >
                              > Yahoo! Groups Links
                              >
                              >
                              >
                              >
                            • Luis Cupido
                              Graham, It is the simplicity of the part that I love about the si570. Yes I can use a DDS, actually that was may initial design until I steped into this si570
                              Message 14 of 20 , Jan 1, 2009
                              • 0 Attachment
                                Graham,

                                It is the simplicity of the part that I love about
                                the si570. Yes I can use a DDS, actually that was may
                                initial design until I steped into this si570
                                now I'm all but indecisions :-(
                                I'm looking to make an I and Q LO from 28 to 146MHz.

                                Luis Cupido.
                                ct1dmk.

                                Graham Haddock wrote:
                                > Luis:
                                > What range of output frequencies do you want?
                                > A DDS like a 9951 can directly use a 10 MHz
                                > input and put out frequencies up to 200 MHz or so.
                                > --- Graham / KE9H
                                >
                                > ==
                                >
                                > Luis Cupido wrote:
                                >> Hi,
                                >>
                                >> Anyone out there knows anything similar to the
                                >> silabs osc but using an external quartz.
                                >> The possibility of locking the radio to a 10MHz
                                >> external reference is something I would like.
                                >>
                                >> (I say some cypress chips but they did not convincved
                                >> me)
                                >>
                                >> Any thoughts ?
                                >>
                                >> Luis Cupido.
                                >> ct1dmk.
                                >>
                                >> Luis Cupido wrote:
                                >>> Mny.Tks.
                                >>> Indeed I'm willing to get the B
                                >>> Geeeeeee, wish it was cheaper :-(
                                >>>
                                >>> 73's
                                >>>
                                >>> Luis Cupido.
                                >>> ct1dmk.
                                >>>
                                >>>
                                >>> Christos Nikolaou wrote:
                                >>>> Luis,
                                >>>>
                                >>>> You can also have Si570 from www.box73.de they can provide not only
                                >>>> the plain grade-C but also grade-B with the extended frequency range.
                                >>>>
                                >>>> 73,
                                >>>> Christos SV1EIA
                                >>>>
                                >>>>
                                >>>>
                                >>>> --- In powersdr-iq@yahoogroups.com
                                >> <mailto:powersdr-iq%40yahoogroups.com>, Luis Cupido <cupido@...> wrote:
                                >>>>> tks,
                                >>>>> lc
                                >>>>>
                                >>>>>
                                >>>>> Alan wrote:
                                >>>>>> ----- Original Message -----
                                >>>>>> From: "Luis Cupido"
                                >>>>>>
                                >>>>>>> Is there an easy way to buy si570's ?
                                >>>>>>> tks.
                                >>>>>> http://www.softrockradio.org/si570
                                >> <http://www.softrockradio.org/si570> and
                                >>>>>> http://www.sdr-kits.net/ <http://www.sdr-kits.net/>
                                >>>>>>
                                >>>>>> 73 Alan G4ZFQ
                                >>>>>>
                                >>>>>> ------------------------------------
                                >>>>>>
                                >>>>>> Yahoo! Groups Links
                                >>>>>>
                                >>>>>>
                                >>>>>>
                                >>>>>>
                                >>>>
                                >>>> ------------------------------------
                                >>>>
                                >>>> Yahoo! Groups Links
                                >>>>
                                >>>>
                                >>>>
                                >>>>
                                >>> ------------------------------------
                                >>>
                                >>> Yahoo! Groups Links
                                >>>
                                >>>
                                >>>
                                >>>
                                >>
                                >
                                >
                                >
                                > ------------------------------------
                                >
                                > Yahoo! Groups Links
                                >
                                >
                                >
                                >
                              • Luis Cupido
                                Graham, It is the simplicity of the part that I love about the si570. Yes I can use a DDS, actually that was may initial design until I steped into this si570
                                Message 15 of 20 , Jan 1, 2009
                                • 0 Attachment
                                  Graham,

                                  It is the simplicity of the part that I love about
                                  the si570. Yes I can use a DDS, actually that was may
                                  initial design until I steped into this si570
                                  now I'm all but indecisions :-(
                                  I'm looking to make an I and Q LO from 28 to 146MHz.

                                  Luis Cupido.
                                  ct1dmk.
                                • netnovel2005
                                  Hello slightly off topic may be. ... My DDS-BASE can become IQ generator with two board. http://zao.jp/radio/dds-base/index_e.php This board is designed for
                                  Message 16 of 20 , Jan 1, 2009
                                  • 0 Attachment
                                    Hello

                                    slightly off topic may be.

                                    --- In powersdr-iq@yahoogroups.com, Luis Cupido <cupido@...> wrote:
                                    >
                                    > Graham,
                                    >
                                    > It is the simplicity of the part that I love about
                                    > the si570. Yes I can use a DDS, actually that was may
                                    > initial design until I steped into this si570
                                    > now I'm all but indecisions :-(
                                    > I'm looking to make an I and Q LO from 28 to 146MHz.

                                    My DDS-BASE can become IQ generator with two board.

                                    http://zao.jp/radio/dds-base/index_e.php

                                    This board is designed for Synchronization with two AD9859.
                                    Daughter board is compatible with AD9951 and AD9954.

                                    But I did not write control soft yet.
                                    There is source code for single chip by VB.NET.
                                    I think it is easy to write control soft for syncronization.

                                    I already build IQ generator with AD9834.

                                    http://www.eleki-jack.com/lab/9834x2.html

                                    control soft is here.

                                    http://zao.jp/radio/dds34en/DDS_34x2.zip

                                    I am making sdr unit with this circuit now.

                                    best regards,

                                    JA7TDO
                                    Miura

                                    >
                                    > Luis Cupido.
                                    > ct1dmk.
                                    >
                                    > Graham Haddock wrote:
                                    > > Luis:
                                    > > What range of output frequencies do you want?
                                    > > A DDS like a 9951 can directly use a 10 MHz
                                    > > input and put out frequencies up to 200 MHz or so.
                                    > > --- Graham / KE9H
                                    > >
                                    > > ==
                                    > >
                                    > > Luis Cupido wrote:
                                    > >> Hi,
                                    > >>
                                    > >> Anyone out there knows anything similar to the
                                    > >> silabs osc but using an external quartz.
                                    > >> The possibility of locking the radio to a 10MHz
                                    > >> external reference is something I would like.
                                    > >>
                                    > >> (I say some cypress chips but they did not convincved
                                    > >> me)
                                    > >>
                                    > >> Any thoughts ?
                                    > >>
                                    > >> Luis Cupido.
                                    > >> ct1dmk.
                                    > >>
                                    > >> Luis Cupido wrote:
                                    > >>> Mny.Tks.
                                    > >>> Indeed I'm willing to get the B
                                    > >>> Geeeeeee, wish it was cheaper :-(
                                    > >>>
                                    > >>> 73's
                                    > >>>
                                    > >>> Luis Cupido.
                                    > >>> ct1dmk.
                                    > >>>
                                    > >>>
                                    > >>> Christos Nikolaou wrote:
                                    > >>>> Luis,
                                    > >>>>
                                    > >>>> You can also have Si570 from www.box73.de they can provide not only
                                    > >>>> the plain grade-C but also grade-B with the extended frequency
                                    range.
                                    > >>>>
                                    > >>>> 73,
                                    > >>>> Christos SV1EIA
                                    > >>>>
                                    > >>>>
                                    > >>>>
                                    > >>>> --- In powersdr-iq@yahoogroups.com
                                    > >> <mailto:powersdr-iq%40yahoogroups.com>, Luis Cupido <cupido@> wrote:
                                    > >>>>> tks,
                                    > >>>>> lc
                                    > >>>>>
                                    > >>>>>
                                    > >>>>> Alan wrote:
                                    > >>>>>> ----- Original Message -----
                                    > >>>>>> From: "Luis Cupido"
                                    > >>>>>>
                                    > >>>>>>> Is there an easy way to buy si570's ?
                                    > >>>>>>> tks.
                                    > >>>>>> http://www.softrockradio.org/si570
                                    > >> <http://www.softrockradio.org/si570> and
                                    > >>>>>> http://www.sdr-kits.net/ <http://www.sdr-kits.net/>
                                    > >>>>>>
                                    > >>>>>> 73 Alan G4ZFQ
                                    > >>>>>>
                                    > >>>>>> ------------------------------------
                                    > >>>>>>
                                    > >>>>>> Yahoo! Groups Links
                                    > >>>>>>
                                    > >>>>>>
                                    > >>>>>>
                                    > >>>>>>
                                    > >>>>
                                    > >>>> ------------------------------------
                                    > >>>>
                                    > >>>> Yahoo! Groups Links
                                    > >>>>
                                    > >>>>
                                    > >>>>
                                    > >>>>
                                    > >>> ------------------------------------
                                    > >>>
                                    > >>> Yahoo! Groups Links
                                    > >>>
                                    > >>>
                                    > >>>
                                    > >>>
                                    > >>
                                    > >
                                    > >
                                    > >
                                    > > ------------------------------------
                                    > >
                                    > > Yahoo! Groups Links
                                    > >
                                    > >
                                    > >
                                    > >
                                    >
                                  • joe price
                                    Christos, I have had some success with Dave s WB6DHW s UHFSDR project on two meters. would you please consider the following changes to your next revision.
                                    Message 17 of 20 , Apr 17, 2009
                                    • 0 Attachment
                                      Christos,

                                      I have had some success with Dave's WB6DHW's UHFSDR project on two meters. would you please consider the following changes to your next revision.

                                      Add the 2 meter band selection box in the Band-HF under the S meter.

                                      Keep the extended frequency box checked under General Si570 (to allow TX on 2).

                                      Store TX/RX I/Q image data for 2 meters.

                                      Enable the TX Sequencing time so that it's used in both directions not
                                      just RX to TX. The UHFSDR board has a small transient switching from TX to RX
                                      which activates the RX AGC when TIME is set to slow (SSB) Fast AGC is OK.

                                      Joe wa9cgz
                                      .
                                    • Christos Nikolaou
                                      Hi Joe, The UHFSDR kit is still sitting there in pieces in my lab pipeline... I envy that you already got the feeling of it and how the H-Mode mixer works in
                                      Message 18 of 20 , Apr 17, 2009
                                      • 0 Attachment
                                        Hi Joe,

                                        The UHFSDR kit is still sitting there in pieces in my lab pipeline...
                                        I envy that you already got the feeling of it and how the H-Mode mixer works in comparisson to the QSD/QSE we were familiar with.
                                        I didnt go into the trouble of building it on the beta board and patiently waiting Dave to anounce the new rectified boards.

                                        Appart from the first touches on PowerSDR-IQ for UHFSDR usage I didnt had the time to incorporate the requests done so far yet. But I will, since I also want to have the H-Mode mixer experience and SDR up to UHF.

                                        Although you had your Easter last week, its the Orthodox Easter here so you have my Season Greetings.

                                        73,
                                        Christos SV1EIA




                                        --- In powersdr-iq@yahoogroups.com, "joe price" <joeprice@...> wrote:
                                        >
                                        > Christos,
                                        >
                                        > I have had some success with Dave's WB6DHW's UHFSDR project on two meters. would you please consider the following changes to your next revision.
                                        >
                                        > Add the 2 meter band selection box in the Band-HF under the S meter.
                                        >
                                        > Keep the extended frequency box checked under General Si570 (to allow TX on 2).
                                        >
                                        > Store TX/RX I/Q image data for 2 meters.
                                        >
                                        > Enable the TX Sequencing time so that it's used in both directions not
                                        > just RX to TX. The UHFSDR board has a small transient switching from TX to RX
                                        > which activates the RX AGC when TIME is set to slow (SSB) Fast AGC is OK.
                                        >
                                        > Joe wa9cgz
                                        > .
                                        >
                                      • Dave - WB6DHW
                                        Christos: The UHFSDR does not use an H mode mixer(at least if I understand what an H mode mixer is). The UHFSDR uses 2 standard double balanced mixers. The
                                        Message 19 of 20 , Apr 17, 2009
                                        • 0 Attachment
                                          Christos:

                                          The UHFSDR does not use an H mode mixer(at least if I understand what
                                          an H mode mixer is). The UHFSDR uses 2 standard double balanced mixers.
                                          The DBM's have about 6 dB of loss verses 1dB or less for the QSD.
                                          But, DBM's are available for frequencies well into the tens of GHz. It
                                          uses a quadrature LO as do all the other SDR's.

                                          Dave - WB6DHW
                                          <http://wb6dhw.com>

                                          Christos Nikolaou wrote:
                                          > Hi Joe,
                                          >
                                          > The UHFSDR kit is still sitting there in pieces in my lab pipeline...
                                          > I envy that you already got the feeling of it and how the H-Mode mixer works in comparisson to the QSD/QSE we were familiar with.
                                          > I didnt go into the trouble of building it on the beta board and patiently waiting Dave to anounce the new rectified boards.
                                          >
                                          > Appart from the first touches on PowerSDR-IQ for UHFSDR usage I didnt had the time to incorporate the requests done so far yet. But I will, since I also want to have the H-Mode mixer experience and SDR up to UHF.
                                          >
                                          > Although you had your Easter last week, its the Orthodox Easter here so you have my Season Greetings.
                                          >
                                          > 73,
                                          > Christos SV1EIA
                                          >
                                          >
                                          >
                                          >
                                          > --- In powersdr-iq@yahoogroups.com, "joe price" <joeprice@...> wrote:
                                          >> Christos,
                                          >>
                                          >> I have had some success with Dave's WB6DHW's UHFSDR project on two meters. would you please consider the following changes to your next revision.
                                          >>
                                          >> Add the 2 meter band selection box in the Band-HF under the S meter.
                                          >>
                                          >> Keep the extended frequency box checked under General Si570 (to allow TX on 2).
                                          >>
                                          >> Store TX/RX I/Q image data for 2 meters.
                                          >>
                                          >> Enable the TX Sequencing time so that it's used in both directions not
                                          >> just RX to TX. The UHFSDR board has a small transient switching from TX to RX
                                          >> which activates the RX AGC when TIME is set to slow (SSB) Fast AGC is OK.
                                          >>
                                          >> Joe wa9cgz
                                          >> .
                                          >>
                                        • Christos Nikolaou
                                          Dave, Thanks for the intervention! Honestly I had the impression that it was an H-thing but never got the curiosity (until now) to see PA3AKE s site and have a
                                          Message 20 of 20 , Apr 17, 2009
                                          • 0 Attachment
                                            Dave,

                                            Thanks for the intervention!
                                            Honestly I had the impression that it was an H-thing but never got the curiosity (until now) to see PA3AKE's site and have a good read on this.
                                            You sure made me start reading the H-Mode mixer documents and try to find the differences with your design.
                                            Next time I have to be more careful. :-)

                                            73,
                                            Christos SV1EIA



                                            PS.
                                            By the way are the production boards ready to order?




                                            --- In powersdr-iq@yahoogroups.com, Dave - WB6DHW <brainerd@...> wrote:
                                            >
                                            > Christos:
                                            >
                                            > The UHFSDR does not use an H mode mixer(at least if I understand what
                                            > an H mode mixer is). The UHFSDR uses 2 standard double balanced mixers.
                                            > The DBM's have about 6 dB of loss verses 1dB or less for the QSD.
                                            > But, DBM's are available for frequencies well into the tens of GHz. It
                                            > uses a quadrature LO as do all the other SDR's.
                                            >
                                            > Dave - WB6DHW
                                            > <http://wb6dhw.com>
                                            >
                                            > Christos Nikolaou wrote:
                                            > > Hi Joe,
                                            > >
                                            > > The UHFSDR kit is still sitting there in pieces in my lab pipeline...
                                            > > I envy that you already got the feeling of it and how the H-Mode mixer works in comparisson to the QSD/QSE we were familiar with.
                                            > > I didnt go into the trouble of building it on the beta board and patiently waiting Dave to anounce the new rectified boards.
                                            > >
                                            > > Appart from the first touches on PowerSDR-IQ for UHFSDR usage I didnt had the time to incorporate the requests done so far yet. But I will, since I also want to have the H-Mode mixer experience and SDR up to UHF.
                                            > >
                                            > > Although you had your Easter last week, its the Orthodox Easter here so you have my Season Greetings.
                                            > >
                                            > > 73,
                                            > > Christos SV1EIA
                                            > >
                                            > >
                                            > >
                                            > >
                                            > > --- In powersdr-iq@yahoogroups.com, "joe price" <joeprice@> wrote:
                                            > >> Christos,
                                            > >>
                                            > >> I have had some success with Dave's WB6DHW's UHFSDR project on two meters. would you please consider the following changes to your next revision.
                                            > >>
                                            > >> Add the 2 meter band selection box in the Band-HF under the S meter.
                                            > >>
                                            > >> Keep the extended frequency box checked under General Si570 (to allow TX on 2).
                                            > >>
                                            > >> Store TX/RX I/Q image data for 2 meters.
                                            > >>
                                            > >> Enable the TX Sequencing time so that it's used in both directions not
                                            > >> just RX to TX. The UHFSDR board has a small transient switching from TX to RX
                                            > >> which activates the RX AGC when TIME is set to slow (SSB) Fast AGC is OK.
                                            > >>
                                            > >> Joe wa9cgz
                                            > >> .
                                            > >>
                                            >
                                          Your message has been successfully submitted and would be delivered to recipients shortly.