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  • Re: Looking to go all-band...

    Hi Jim, That is an excellent IMD figure - shows what good design and layout can accomplish! I agree that operating with the signal close to the LO is good

    ve7vv 4 days ago
  • Re: Looking to go all-band...

    Hi Jim, Yes, HDSDR does have a method for I/Q balance for TX. But HDSDR must be TX mode to see it. In TX mode: Options -> Output Channel Calibration for TX

    w4mmp 5 days ago
  • Re: Looking to go all-band...

    Hi Roger, On the prototype that has the bandpass filters directly after the TX mixer, as long as the 'PA Clipping' LED was off, the IMD's generated by a single

    jimveatch 5 days ago
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Group Description

The SoftRock-40 is a small, low-cost, good performing 40-meter "software defined radio" receiver that plugs into a computer USB port and delivers I-Q audio signals to the computer's sound card. It was designed by Tony Parks, KB9YIG and Bill Tracey, KD5TFD as an "SDR sampler project" for hams everywhere to easily try out software defined radio.

This is the place to express your enthusiasm, ideas, experiences, modifications, extensions and maybe more ?


Aug 2, 2012 SoftRock Kit Orders Now Taken Online fivedash.com

Dec 21, 2008 Lite II [docs]

Nov 30, 2008 Electronically Switched v9.0 HF BPF kit

Oct 22, 2008 v9.0 50 and 144MHz converter (Beta) [docs]

Oct 2, 2008 v9.0 Lite+USB Xtall [docs, notes]

Jul 29, 2008 USB I2C interface kit [docs]

Jul 12, 2008 RXTX+Xtall v6.3 transceiver [docs, proto]

Group Information

  • 10498
  • Shortwave
  • Sep 11, 2005
  • English

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