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From: =?UTF-8?Q?Wolfgang_B=c3=bcscher?= <dl4yhf@freenet.de>
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Date: Mon, 30 May 2016 21:23:35 +0200
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Subject: Re: LF: SDR-Play and Spectrum Laboratory
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Hello Tobias, Dave, and the group,

Great, thanks Tobias - in that case, Dave doesn't need to fool around 
with virtual audio cables etc.
After installing the ExtIO-interface, you can select ("install") it as 
an input device for Spectrum Lab as explained here: 
http://www.qsl.net/dl4yhf/speclab/settings.htm#ext_io_dll

About the A/D converters resolution: Ummm... I thought it was 12 bits. 
If it's 10 bits, even a cheap DSPic with a bit of decimation could 
achieve a similar dynamic range. Maybe time for me to continue with that 
project.. too many other things got in the way lately..

All the best,
    Wolf .

Am 30.05.2016 um 21:08 schrieb Tobias DG3LV:
> Hi Dave, Wolfgang !
>
> Please have a look at this website :
> http://www.sdrplay.com/windows.html
>
> http://www.sdrplay.com/software/SDRplay_EXTIO_Installer_v3.8.3.exe
>
> The Chip-manufacturer claims 10 Bit resolution ENOB (effective number 
> of bits), so the device should be somewhat better than the usual DVB-T 
> sticks at 8 Bits (at more than 10 times the price of those).
>
> 73 de dg3lv Tobias
>
> Am 30.05.2016 um 20:47 schrieb Wolfgang Büscher:
>> Hello Dave,
>>
>> By coincidence, one of the developers of SDR-play recently asked me if
>> I'd like to have one of these devices to add support for it. Since I
>> cannot devote lots of time for it, my suggestion was that one of the
>> SDR-play developers should write an ExtIO-compatible interface DLL for
>> it. Most if not all SDR programs support it, for example Winrad, HDSDR,
>> Spectrum Lab, and possibly many others, so writing such a DLL would make
>> their radio more useful to many users.
>> I don't know what happened since then, but maybe there is a
>> Winrad-compatible "ExtIO"-DLL available already, which you can easily
>> load in Spectrum Lab as driver for an 'input device'. Just let me know
>> if you need more information.
>> It would be interesting to know how the SDR-play compares with other
>> (more expensive) SDRs. Maybe I will carry one home from the Ham Radio
>> fair in Friedrichshafen this year...
>>
>> All the best,
>>   Wolf .
>>
>>
>> Am 30.05.2016 um 17:09 schrieb DAVE PICK:
>>>
>>> Dear LF
>>>
>>> I have a new toy which I've finished playing with and I want to use it
>>> for some useful purpose. It's an "SDR-Play" USB SDR.
>>>
>>> What I'd like to be able to use it for is to replace my old Soft-Rock
>>> SDRs for my LF and MF grabbers.
>>>
>>> I can get it to view a slice of the spectrum 500 or 600kHz wide from,
>>> say 50 to 550kHz, then I want to be able to run two instances of
>>> Spectrum Lab (or Argo?) to take grabs of the 136 and 472kHz bands.
>>>
>>> But, how do I configure spectrum Lab (or another program) to be able
>>> to do this? I feel awfully out of my depth when I read anything about
>>> setting this sort of thing up so any help in plain language would be
>>> appreciated!
>>>
>>> I realise I'll have to pay great attention to the front-end filtering
>>> in order to make the most of the limited resolution of the A/D but
>>> that sort of stuff I can cope with!
>>>
>>> 73
>>>
>>>
>>> Dave G3YXM
>>>
>>
>>
>>
>