[hpsdr] Anie

[Phil Harman]

Hi Frank,

Thanks for the feedback - I'll add your comments to the Wiki.

Phil....
  ----- Original Message ----- 
  From: FRANCIS CARCIA 
  To: hpsdr at lists.hpsdr.org 
  Sent: Monday, March 23, 2009 10:30 AM
  Subject: [hpsdr] Anie


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        Hi All,
        I think a great interface for a preselector would be the DB25 on Ozy. We could output 16 bits of 4 bit BCD to give 10 KHz resolution to tune a preselector,  This would be the center frequency on the display. Phil, You may remember the schematic I sent you of the Cubic pre-post selector. There are a number of different mil versions by Collins and Harris to name two others. The Cubic is set up to handle 1/2 watt of power and has a TR relay. 
        This would also be a good interface for anyone who would want to build a homebrew preselector. I was on the air a few nights ago and something in the area saturated the Mercury A/D for the first time so I see a need for a better preselector rather than a simple wideband filter. The Harris RF590 has a nice small tunable unit but I don't know the interface. A serial string would also work but I think 10 KHz resolution should be enough.
        I have used my Cubic pre-post selector in series with Mercury and find the performance quite good. I would think this is the next step in improving a beautiful receiver. 
        Frank WA1GFZ

        P.S. My friends have been sending my on air tapes of Penny with the comment that I have never sounded better. 
       



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