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Date: Sat, 30 Oct 2010 13:48:45 +0200
From: wolf_dl4yhf <dl4yhf@freenet.de>
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References: <4CCAED49.6030007@o2.ie> <9D5C745165354DCE8D0B48E7D4D2ECFE@MLB> <59B1A23B4CA14150802E04293BEA97FA@AGB>
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Subject: Re: LF: Re: RFspace SDR-IQ
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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
> --------------------------------------------------
> From: "Martin Evans." <books@mollies.freeserve.co.uk>
> Sent: Saturday, October 30, 2010 8:43 AM
> To: <rsgb_lf_group@blacksheep.org>
> 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.
>>
>>
>>
>>
>
>
>
>
>