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Re: [softrock40] Re: Softrock Mk.3 rig with single USB cable

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  • Lawrence Galea
    20 Watt amplifier design complete with pcb design, nominal input of –13dBm (0.05mW) so you can put an attenuator at the input 150 Watt amplifier design
    Message 1 of 9 , Jan 1, 2011
      20 Watt amplifier design complete with pcb design, nominal input of –13dBm (0.05mW) so you can put an attenuator at the input
      150 Watt amplifier design complete with pcb design
      Also other equipment.
      Look at the left hand sidebar.
      http://www.radio-kits.co.uk/

      Regards and a happy new year to all
      Lawrence

      --- Sab 1/1/11, Sid Boyce <sboyce@...> ha scritto:

      Da: Sid Boyce <sboyce@...>
      Oggetto: Re: [softrock40] Re: Softrock Mk.3 rig with single USB cable
      A: softrock40@yahoogroups.com
      Data: Sabato 1 gennaio 2011, 05:41

       

      $95.00 US sent via Paypal.
      I have filter sets around, so that's no problem.
      73 ... Sid.

      On 01/01/11 03:08, Alex wrote:
      >
      > --- In softrock40@yahoogroups.com <mailto:softrock40%40yahoogroups.com>,
      > "applewiz2000" <rob.m0rzf@...> wrote:
      > >
      > >
      > >
      > > Hi Sid,
      > >
      > > I would be prepared to sell the Gerber files, at a negotiable but
      > reasonable fee, to anyone that wants them.
      > >
      > > The PCB had just one small track error on it, which took about 10
      > seconds to correct. It's a shame the technology I designed for the
      > amplifier + lowpass filters got wasted. But using the RD16HHF1 FETs
      > makes the price too high compared to designs using SMPS FETs.
      > >
      > > -Rob
      > >
      > >
      > > --- In softrock40@yahoogroups.com
      > <mailto:softrock40%40yahoogroups.com>, Sid Boyce <sboyce@> wrote:
      > > >
      > > > Very neat indeed. It's a pity the 20W amp is discontinued, especially
      > > > the boards.
      > > > 73 ... Sid.
      > > > --
      > >
      >
      > Hi Sid, Rob et al,
      >
      > Looking through my pile of unbuilt kits, I do have an unbuilt (but
      > envelop opened) 20W amp kit (without LPF) from Rob.
      >
      > It has the pcb plus all the parts for the amp, but NOT any of the LPF
      > components. I paid US$80 for it. I am willing to sell it for US$80 +
      > shipping cost from Singapore (estimated shipping cost to USA/Europe
      > about US$15, uninsured).
      >
      > I intended to use the amp with my own switched LPF bank for 160-10M
      > coverage in 7 band groups, rather than the 4 band groups with the 20W PA
      > kit. That's why I did not order the LPF parts from Rob.
      >
      > The reasons I have not built up the 20W amp are (1) I have been busy
      > with the sdr-widget project, and (2) I find that I can operate without a
      > 20W amp!
      >
      > The 20W amp is a very good complement to the stock Softrock v6.3 RxTx
      > which has a 1W output, and I think it is very good for even the newer
      > Softrock RxTx ensemble kits with about 1W output.
      >
      > However, several developments happened after I have purchased Rob's 20W
      > PA kit: Mobo v4.3 and WSPR.
      >
      > Now I am operating with my SR v6.3 + Mobo v4.3 combo. The Mobo v4.3 has
      > 5W output. So it works very well as a QRP rig and for WSPR.
      >
      > For QRO DX work, I connect the SR/Mobo to an external 600W PA (The EB104
      > from Communications Concepts). The EB104 has 22dB gain, so with the 5W
      > out from the Mobo, I have almost full power output from the 600W PA.
      >
      > So for my setup, there is no need/place for the 20W amp which is caught
      > in-between 5W and 600W.
      >
      > 73 Alex
      >

      --
      Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
      Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
      Senior Staff Specialist, Cricket Coach
      Microsoft Windows Free Zone - Linux used for all Computing Tasks


    • Peter Johnson
      Hi Lawrence . Strange that as I have one of each amplifier sitting on the shelf waiting for me to finish the the matching LPF board. Have you tried them with a
      Message 2 of 9 , Jan 1, 2011
        Hi Lawrence .
        Strange that as I have one of each amplifier sitting on the shelf waiting for me to finish the the matching LPF board.

        Have you tried them with a Softrock or are using them with the Star radio.

        Regards Peter F1VKK.

        On 01/01/2011 10:58, Lawrence Galea wrote:
        20 Watt amplifier design complete with pcb design, nominal input of –13dBm (0.05mW) so you can put an attenuator at the input
        150 Watt amplifier design complete with pcb design
        Also other equipment.
        Look at the left hand sidebar.
        http://www.radio-kits.co.uk/

        Regards and a happy new year to all
        Lawrence

        --- Sab 1/1/11, Sid Boyce <sboyce@...> ha scritto:

        Da: Sid Boyce <sboyce@...>
        Oggetto: Re: [softrock40] Re: Softrock Mk.3 rig with single USB cable
        A: softrock40@yahoogroups.com
        Data: Sabato 1 gennaio 2011, 05:41

         

        $95.00 US sent via Paypal.
        I have filter sets around, so that's no problem.
        73 ... Sid.

        On 01/01/11 03:08, Alex wrote:
        >
        > --- In softrock40@yahoogroups.com <mailto:softrock40%40yahoogroups.com>,
        > "applewiz2000" <rob.m0rzf@...> wrote:
        > >
        > >
        > >
        > > Hi Sid,
        > >
        > > I would be prepared to sell the Gerber files, at a negotiable but
        > reasonable fee, to anyone that wants them.
        > >
        > > The PCB had just one small track error on it, which took about 10
        > seconds to correct. It's a shame the technology I designed for the
        > amplifier + lowpass filters got wasted. But using the RD16HHF1 FETs
        > makes the price too high compared to designs using SMPS FETs.
        > >
        > > -Rob
        > >
        > >
        > > --- In softrock40@yahoogroups.com
        > <mailto:softrock40%40yahoogroups.com>, Sid Boyce <sboyce@> wrote:
        > > >
        > > > Very neat indeed. It's a pity the 20W amp is discontinued, especially
        > > > the boards.
        > > > 73 ... Sid.
        > > > --
        > >
        >
        > Hi Sid, Rob et al,
        >
        > Looking through my pile of unbuilt kits, I do have an unbuilt (but
        > envelop opened) 20W amp kit (without LPF) from Rob.
        >
        > It has the pcb plus all the parts for the amp, but NOT any of the LPF
        > components. I paid US$80 for it. I am willing to sell it for US$80 +
        > shipping cost from Singapore (estimated shipping cost to USA/Europe
        > about US$15, uninsured).
        >
        > I intended to use the amp with my own switched LPF bank for 160-10M
        > coverage in 7 band groups, rather than the 4 band groups with the 20W PA
        > kit. That's why I did not order the LPF parts from Rob.
        >
        > The reasons I have not built up the 20W amp are (1) I have been busy
        > with the sdr-widget project, and (2) I find that I can operate without a
        > 20W amp!
        >
        > The 20W amp is a very good complement to the stock Softrock v6.3 RxTx
        > which has a 1W output, and I think it is very good for even the newer
        > Softrock RxTx ensemble kits with about 1W output.
        >
        > However, several developments happened after I have purchased Rob's 20W
        > PA kit: Mobo v4.3 and WSPR.
        >
        > Now I am operating with my SR v6.3 + Mobo v4.3 combo. The Mobo v4.3 has
        > 5W output. So it works very well as a QRP rig and for WSPR.
        >
        > For QRO DX work, I connect the SR/Mobo to an external 600W PA (The EB104
        > from Communications Concepts). The EB104 has 22dB gain, so with the 5W
        > out from the Mobo, I have almost full power output from the 600W PA.
        >
        > So for my setup, there is no need/place for the 20W amp which is caught
        > in-between 5W and 600W.
        >
        > 73 Alex
        >

        --
        Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
        Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
        Senior Staff Specialist, Cricket Coach
        Microsoft Windows Free Zone - Linux used for all Computing Tasks


      • Sid Boyce
        I ve seen the 20dB attenuator on the LPF schematic. I ll first work out how much attenuation I need as I have a 0 - 59dB switched attenuator box I built many
        Message 3 of 9 , Jan 1, 2011
          I've seen the 20dB attenuator on the LPF schematic. I'll first work out
          how much attenuation I need as I have a 0 - 59dB switched attenuator box
          I built many years ago.
          Eventually I hope to use the 20W PA to drive the AN762 with built-in
          LPF's and to use the rig barefoot for driving the EB104. Many rigs on
          hand, so the AN762 and EB104 can be switched between them.

          The AN762 datasheet does not give any figures for input drive power, but
          I calculate it's around to 20W input for 140W out.
          73 ... Sid.

          On 01/01/11 09:58, Lawrence Galea wrote:
          > 20 Watt amplifier design complete with pcb design, nominal input of
          > –13dBm (0.05mW) so you can put an attenuator at the input
          > 150 Watt amplifier design complete with pcb design
          > Also other equipment.
          > Look at the left hand sidebar.
          > http://www.radio-kits.co.uk/
          >
          > Regards and a happy new year to all
          > Lawrence
          >
          > --- *Sab 1/1/11, Sid Boyce /<sboyce@...>/* ha scritto:
          >
          >
          > Da: Sid Boyce <sboyce@...>
          > Oggetto: Re: [softrock40] Re: Softrock Mk.3 rig with single USB cable
          > A: softrock40@yahoogroups.com
          > Data: Sabato 1 gennaio 2011, 05:41
          >
          > $95.00 US sent via Paypal.
          > I have filter sets around, so that's no problem.
          > 73 ... Sid.
          >
          > On 01/01/11 03:08, Alex wrote:
          > >
          > > --- In softrock40@yahoogroups.com
          > </mc/compose?to=softrock40%40yahoogroups.com>
          > <mailto:softrock40%40yahoogroups.com>,
          > > "applewiz2000" <rob.m0rzf@...> wrote:
          > > >
          > > >
          > > >
          > > > Hi Sid,
          > > >
          > > > I would be prepared to sell the Gerber files, at a negotiable but
          > > reasonable fee, to anyone that wants them.
          > > >
          > > > The PCB had just one small track error on it, which took about 10
          > > seconds to correct. It's a shame the technology I designed for the
          > > amplifier + lowpass filters got wasted. But using the RD16HHF1 FETs
          > > makes the price too high compared to designs using SMPS FETs.
          > > >
          > > > -Rob
          > > >
          > > >
          > > > --- In softrock40@yahoogroups.com
          > </mc/compose?to=softrock40%40yahoogroups.com>
          > > <mailto:softrock40%40yahoogroups.com>, Sid Boyce <sboyce@> wrote:
          > > > >
          > > > > Very neat indeed. It's a pity the 20W amp is discontinued,
          > especially
          > > > > the boards.
          > > > > 73 ... Sid.
          > > > > --
          > > >
          > >
          > > Hi Sid, Rob et al,
          > >
          > > Looking through my pile of unbuilt kits, I do have an unbuilt (but
          > > envelop opened) 20W amp kit (without LPF) from Rob.
          > >
          > > It has the pcb plus all the parts for the amp, but NOT any of the LPF
          > > components. I paid US$80 for it. I am willing to sell it for US$80 +
          > > shipping cost from Singapore (estimated shipping cost to USA/Europe
          > > about US$15, uninsured).
          > >
          > > I intended to use the amp with my own switched LPF bank for 160-10M
          > > coverage in 7 band groups, rather than the 4 band groups with the
          > 20W PA
          > > kit. That's why I did not order the LPF parts from Rob.
          > >
          > > The reasons I have not built up the 20W amp are (1) I have been busy
          > > with the sdr-widget project, and (2) I find that I can operate
          > without a
          > > 20W amp!
          > >
          > > The 20W amp is a very good complement to the stock Softrock v6.3 RxTx
          > > which has a 1W output, and I think it is very good for even the newer
          > > Softrock RxTx ensemble kits with about 1W output.
          > >
          > > However, several developments happened after I have purchased
          > Rob's 20W
          > > PA kit: Mobo v4.3 and WSPR.
          > >
          > > Now I am operating with my SR v6.3 + Mobo v4.3 combo. The Mobo
          > v4.3 has
          > > 5W output. So it works very well as a QRP rig and for WSPR.
          > >
          > > For QRO DX work, I connect the SR/Mobo to an external 600W PA
          > (The EB104
          > > from Communications Concepts). The EB104 has 22dB gain, so with
          > the 5W
          > > out from the Mobo, I have almost full power output from the 600W PA.
          > >
          > > So for my setup, there is no need/place for the 20W amp which is
          > caught
          > > in-between 5W and 600W.
          > >
          > > 73 Alex
          > >
          >



          --
          Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
          Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
          Senior Staff Specialist, Cricket Coach
          Microsoft Windows Free Zone - Linux used for all Computing Tasks
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