[hpsdr] Playback of I/Q recording w/o hardware

[John Laur]

Unfortunately PowerSDR essentially operates asynchronously and
processes samples as fast as they arrive from the radio. But this
means it does not generate its own clock to take in IQ samples from a
recording at the right rate.

You can use Alan Hopper's HPSDR emulator Patroclus to run PowerSDR
without real hardware though. You will have to configure the VAC1
outputs to send audio to your local sound card, then you can start the
radio. You can playback the IQ file at that point either through
PowerSDR's built-in facility, or  you can load it in Patroclus and it
will receive the samples as if they are arriving from a real radio.

Download Patroclus binaries at https://github.com/ahopper/Patroclus/releases

73, John K5IT

On Tue, Jan 5, 2016 at 7:02 AM, dmb at lightstream.net <dmb at lightstream.net> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hello Walter,
>
> Thank you for your offer, but the .wav file is over 1 GB in size.
>
> Here's what I have tried:
>
> With the hardware powered off, and PowerSDR "off", I can click on the
> 'Wave' menu option and select the desired file to add it to the playlist,
> but when I then click the PowerSDR 'START' button, I get an error message
> dialog box that states: "Error starting HPSDR hardware, is it connected
> and powered?"  The only available response is to click the "OK" button. In
> the 'old days', I think there was an option to run PowerSDR in what was
> called "Demo" mode, but that was several years ago, and I know that the
> current PowerSDR mRS PS software has advanced tremendously, and shares
> only a superficial GUI resemblance to the older version.
>
> I've tried resetting the database to see if any other startup options were
> presented, but the only options are to select a specific radio.
>
> 73,
> Dale - WA8SRA
>
>
>> Can you click on the WAVE tab at the top, and select the file for
>> playback?
>>
>> If you want to send me the file, I can try that on my PowerSDR to verify
>> that function works as expected.
>>
>> Walter/K5WH
>>
>> -----Original Message-----
>> From: Hpsdr [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of
>> dmb at lightstream.net
>> Sent: Monday, January 04, 2016 9:57 PM
>> To: hpsdr at lists.openhpsdr.org
>> Subject: [hpsdr] Playback of I/Q recording w/o hardware
>>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Hello,
>>
>> I have an original HPSDR Atlas-based system with Mercury, Penelope, and
>> Metis. I've made a 15 minute I/Q .wav recording and was hoping that I
>> could
>> pass it along to a fellow ham so that he can explore PowerSDR mRX PS
>> v3.3.6
>>
>> However, I cannot see how to start PowerSDR mRX PS without hardware
>> attached, to "play" the recording. I believe this used to be possible with
>> a
>> much earlier version of PowerSDR. Is it still?
>>
>> 73,
>>
>> Dale - WA8SRA
>
>
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