Hi Graham and the group,
I use an SDR-IQ on VLF, LF, and HF (besides a Perseus on HF), and am
quite satisfied with it.
There are some occasional drop-outs in the data stream from the radio
when the CPU load is high, but I hope to get this fixed soon (it happens
once every few hours so no big concern with the usual QRSS modes).
Cheers,
Wolf DL4YHF .
Am 30.10.2010 11:31, schrieb Graham:
This SDR is round $200 , has anyone used one ?
G..
http://www.lazydogengineering.com/LD-1A_SDR.html
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From: "Martin Evans." <[email protected]>
Sent: Saturday, October 30, 2010 8:43 AM
To: <[email protected]>
Subject: LF: Re: RFspace SDR-IQ
Hello group.
Has anyone any experience with this SDR ?
It looks interesting and I'm a bit tempted, especially as it works
full spec down to 500 Hz and "usable" to 100 Hz.
But as I have never used an SDR, I haven't got a clue if it's any
good or not.
Tony.
#########################################
Tony - I received SAQ two ways a few days ago -
1) wire antenna straight into sound card, using Winrad;
2) Same wire antenna through SDR-IQ using SDR-Radio.
Antenna is 100m inverted U tuned with around 100mH (can't really
remember exactly).
I swapped the antenna physically between the two setups every few
seconds.
I was using two separate computers, one for each method.
Result? - really very little difference. A good clear signal on
both. The sound card/Winrad setup might have been marginally cleaner,
but bearing in mind that this was a lashup, with no attempt at any
kind of optimisation or minimalisation of computer noise, I would
say that the SDR-IQ was close to being the equal of the "wire into
soundcard" method. With some careful filtering to clean up the
computer noise, it would almost certainly equal or exceed it.
I found incidentally, that SDR-Radio software has a much more
sensitive waterfall display than the Spectravue supplied with the
SDR-IQ. The former gave a strong clear trace, while the latter's
trace was barely discernable.
Get one - SDRs are the best thing since CW!
Hope this helps,
Martin GW3UCJ Swansea.
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