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54197Re: [softrock40] Ensemble RXTX Rx I / Q

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    Apr 1, 2011
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      You're getting good information all around. Set PSDR aside for a moment, set the jumpers/audio cables/IQ settings on Winrad so that USB is correct and then calibrate via ExtIO so the SI570 is zero beat on 5,10 or 15mhz WWV. If you can do that and go back and forth USB to LSB (20 to 40 meters say) then it is working correctly. The fact that switching the audio cables mutes receive is not good though. Try unplugging one and the other audio cable when you can hear and see if it makes any difference. Remember software configurations are usually more daunting than building the radio!


      --- On Thu, 3/31/11, Joel Black <w4jbb@...> wrote:

      From: Joel Black <w4jbb@...>
      Subject: Re: [softrock40] Ensemble RXTX Rx I / Q
      To: softrock40@yahoogroups.com
      Date: Thursday, March 31, 2011, 9:47 PM



      I've done that - multiple times.

      Right now, I'm listening to 7.1345MHz LSB on my FT-847.  To hear the same thing on the Ensemble, I have to tune to 7.133MHz LSB.  This would be correct if it's a USB to LSB thing.  BTW, the FT-847 is good to go.

      Tired of screwing with this for now...


      On 3/31/2011 9:37 PM, Dave Matthews wrote:

      On Thu, Mar 31, 2011 at 10:12 PM, Joel Black <w4jbb@...> wrote:

      Ok, I am at my wit's end. I have completed the Rx Opamps stage of the
      build. All tests were good and I receive fine except for one thing,
      everything is in the opposite sideband of where it should be. I'm using
      PowerSDR (SV1EIA version) and an E-MU 1212.

      Reverse the lines to the sound card or flip them in your software if it supports it.  I had the same problem with my RXTX 6.3 in Rocky.  I couldn't figure out why nobody was in the PSK31 frequencies but there was lots of PSK31 up a few khz.


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