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Linrad + SDR-IQ
- Subject: Linrad + SDR-IQ
- From: VK2KU <clearmail.com.au; vk2ku@xxxxxxxxxxxxxxxx>
- Date: Sun, 10 Feb 2008 19:31:53 -0800 (PST)
I ran my SDR-IQ into Linrad in parallel with my main FT1000MP system
during the EME digital contest this last weekend, working some 31
stations on 144MHz JT65B, 28 of those in the contest period. This was
the first time I have given Linrad a long workout since I got it
configured somewhere near optimum.
I also used the N0UK logger because I was not interested in formally
entering the contest, and it sometimes provides other useful
information such as the US State of a station.
The results were impressive. I was able to see stations down to at
least -28dB WSJT scale on the Linrad main waterfall, so there was no
case when I decoded a station through the FT1000MP that I could not
also see that station on the Linrad 90kHz wide main waterfall. In
nearly every case I saw a station on Linrad before the logger, and of
course many stations were not on the logger at all, but were true
None of this is any great surprise, given that both systems were
running at the same bin resolution of around 5Hz fed from the same
preamp and transverter to 28MHz. Thank you Leif for this great
But it was great to see and made it so much easier to find stations
anywhere in the band. It was a particular pleasure to be able to reply
to a CQ from Joe K1JT right on my moonrise!
Now all it needs is a version of MAP65 running on the Linrad output to
give decodes right across the band. I believe that this is in the
works somewhere soon.
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