[Fourlanders] another FCD update

Jim Worsham w4kxy at bellsouth.net
Sun Mar 11 14:17:46 PDT 2012


I thought that the SDR-14 only covered up to 30 MHz.  If so, how are you 
looking at the 69.450 Mhz IF output of the FT-2000 with an SDR-14?

73
Jim, W4KXY

----- Original Message ----- 
From: "Bob Lear" <w4zst at windstream.net>
To: <fourlanders at contesting.com>; "Charles Osborne" <k4cso at charter.net>
Sent: Sunday, March 11, 2012 2:30 PM
Subject: [Fourlanders] another FCD update


> Latest in the saga.
>
> I have now been able to make the SDR-14 work!  I have used it direct and
> on the IF outputs, like the 69.450 MHz out of the FT-2000.  It certainly
> has a wider bandwidth display than any of the other possibilities, but
> of course at a much higher cost.  I also have it working on my old
> TS-850 with the 8.215 MHz IF out.  The problems I had with the SDR-14
> first were getting audio out using Brian's contesting computers.  I
> still couldn't get that to work, but installing drivers and software on
> my computers, I can get audio demod too with the SDR-14.  Anyway, I and
> Q appear to be reversed and I can't figure that out.  Almost all of the
> other programs besides SpectraVue allow you to manually select I/Q
> reverse, but I can't find this in SpectraVue or the SDR-14 set-up.
> Also, the -10 and -30 dB gain settings don't allow a signal through.
> The 0 and -20 setting work, but I would like to use -20 for the best
> scaling, but can't.  Maybe Brian or other SDR-14 users with more
> experience can answer that for me.  The relays click when you select any
> of the four gain settings, but sigs come through only on 0 and -20 and
> NOT on -10 or -30.  What gives?
>
> Also I have found that the first problem that I had with WU2X PowerSDR
> IF edition is only in CW mode.  That is very strange.  It seems to work
> perfectly in AM or SSB modes, but when you change it to CW, which
> appears to only be a change of filter bandwidth to me, it starts
> breaking up the audio and eventually locks up.  Any help there would be
> appreciated too.  I know I need to get on that Yahoo group and ask the
> question, but haven't gotten to it yet.
>
> Scott brought me his K3/P3 for testing and comparison.  It is certainly
> easy to set up.  Also nice to have a set-up that you can almost hold in
> one hand compared to all the heavier radios and computer hardware I am
> having to use to get to the same capability.  There is much to be said
> for the K3/P3 combo.  I will report more later when I've had more time
> to spend with it and comparing it to what else I'm doing.
>
> So there you have the latest.  Bob
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