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Re: [softrock40] Has anyone got their UHFSDR working?

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  • Sid Boyce
    ... That says it all, Softrocks, UHFSDR and others presents I&Q signals to a sound card, the software takes care of the mode - FM/AM/SSB/CW, band/frequency
    Message 1 of 7 , Oct 28, 2010
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      On 28/10/10 07:21, Dave - WB6DHW wrote:
      > Don:
      > Depends on the software. I don't know how they generate it. The
      > UHFSDR uses the I and Q signals.
      >
      > Dave - WB6DHW
      > <http://wb6dhw.com>
      >
      That says it all, Softrocks, UHFSDR and others presents I&Q signals to a
      sound card, the software takes care of the mode - FM/AM/SSB/CW,
      band/frequency etc, filtering - bandwidth, noise reduction/filtering, etc.
      73 ... Sid.

      > On 10/27/2010 9:08 PM, Donald Jacob wrote:
      >
      >> HI Dave,
      >>
      >> Is the UHFSDR true FM or is it PM?
      >> Playing with some GMSK, and might be interesting to
      >> see how it works.
      >>
      >> 73
      >> Don
      >> WB5EKU
      >>
      >> On Wed, Oct 27, 2010 at 1:53 PM, Dave - WB6DHW <brainerd@...
      >> <mailto:brainerd@...>> wrote:
      >>
      >> Ed:
      >> I have heard from several that they have their UHFSDR working. I use
      >> PowerSDR-IQ v1.20. I don't have facilities for a senstivity
      >> measurement, but
      >> seems to work as well as my commercial HF and VHF radios. Transmit
      >> output
      >> depends on the level out of your sound card. I see 10 to 20 mW.
      >> Others report
      >> up to 50mW.
      >> I have used in on 75M SSB transmit and receive, on 20M SSB and PSK31
      >> receive, 2M, Weather Channel, and 440 MHz receive FM and made a 2M
      >> FM contact
      >> over a 12 mile path using a 20M vertical as the antenna. I also
      >> listen to
      >> shortwave stations. The Austin QRP group has one working with
      >> their SDR2GO (no
      >> PC required) project. I sent an assembled UHFSDR to George to test
      >> with the
      >> SDRCube(also no PC required).
      >> Phase noise is almost totally dependent on the Si570.
      >>
      >> Dave - WB6DHW
      >> <http://wb6dhw.com>
      >>
      >>
      >>
      >> On 10/27/2010 11:19 AM, Ed wrote:
      >> > Hello All,
      >> >
      >> > I am interested in the results of the UHFSDR project. Has anyone
      >> completed yet and if so, what performance is being achieved.
      >> >
      >> > Thanks
      >> > Ed GM3SBC
      >> >
      >> >
      >> >



      --
      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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