James,
I found some of the answers to your questions at
http://www.w1aex.com/fifisdr/fifisdr.html . I believe the real issue will
be the audio sampling rate you select / require for the bandwidth of the
SDR. I found that the audio sampling rate I used with my Flex-1500 and
Virtual Audio Cables (VAC 4.11) had to be 2 channel, 16 bit, 48000 Hz in
order to avoid resampling and Delayed Procedure Calls (DPCs). Keep in mind
that the FLEX-1500, CWSkimmer, and other devices, document a 48000 Hz
sampling rate provides a 48 kHz bandwidth although only 10 kHz may be
displayed. The key is to avoid a 44100 to 48000 resampling or similar
problem
I can verify that a FLEX-1500 sampling at the 2 channel, 16 bit, 48000 Hz
rate, driving CWSkimmer in telnet mode will drive N1MM for contests or DXLab
SpotCollector (see http://www.dxatlas.com/CwSkimmer/Files/Skimmerintro.pdf)
73 & DX,
Gary - AB9M
-----Original Message-----
From: K8JHR
Sent: Friday, April 25, 2014 4:58 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] OT: Rob Sherwood's impression of the FLEX 6x00
Thanks, guys, for the uptake on using a Flex radio as a station scope.
I "built" an SDR radio Kit, produced by the German FunkAmateur
organization, called a FiFi-SDR Kit (there was a favorable blurb on it
in QST a couple issues ago.) I was sorta hoping it would have
sufficient resolution to function in the same place as the Flex
mentioned in the suggestions. I have better than average sound cards
because I use speech recognition software, and thought maybe it would be
sufficient to mimic the output of the Flex, provided the Flex is good
enough, and it seems it is. I labor under the impression the FiFi SDR
is equivalent to a SoftRock SDR or similar.
You can even use it as an ersatz "second receiver" with N4PY software.
Do you suppose it is up to the task? Would it have sufficient detail to
suffice? If so, I am good to go without an additional purchase.
Thanks, again.
----------------------- K8JHR ----------------------
On 4/25/2014 2:48 PM, GARY HUBER wrote:
I agree with Bob, a SDR like a FLEX-1500, (you can buy or build for a
Soft-Rock for less) along with a basic PowerSDR like program and a Radio
Control Program (DXLab Commander for example) with a computer, will work
as a station monitor, panadapter, scope, and other things. Download
Audacity, software for recording, editing, and analyzing audio and you
have the tools to analyze your (or others') transmitted audio.
Other than the SDR and interconnecting cables, the cost is minimal, as
the software mentioned above is free.
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