DSDPlus Bugs/Features in FMPA 2.36 (Airspy R2 + DSDPlus)

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noamlivne

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Sep 7, 2012
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Hi All,
I started using FMPA 2.36 with Airspy R2 last week, and need some clarification or assistance, or bug fixes:

1. I noticed that no matter the frequency, and no matter the strength of the signals, the FMPA spectrum is doubled: left side is equal to right side and vice versa. A mirror image.
It does not matter if I press the "i" option.
The reception of Airspy+FMPA is quite well, but most of the times fictional freqs block real freqs.
See attached pic for example of the mirroring.
FMPA_2_36_Mirror.png
This does not happen in SDRSharp, for example.

2. Can FMPA be aligned to FMP with regards to the Scanning function?
As far as I can see, FMPA cannot scan AM mode and has some other limitations.

Thank you in advance.
 
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slicerwizard

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The R2 has an "Experimental 2.5MSPS IQ output"; doesn't sound like it's fully supported, but that's the sampling rate that FMPA uses.

Also, are you using an up to date airspy.dll file (version 1.0.9) ?
 
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noamlivne

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Thank you very much for your answer.
FMPA is probably still a work-in-progress...

I see that the airspy.dll that is downloaded via the DSDPlus > Misc > Download Newest Base Files is 1.0.8.
But the one in SDRSharp 1811 is 1.0.9.
Interesting.
Unfortunately both start up quite nicely, but after the FMPx TCP Linking(?) is established (for some reason it does not want to accept Direct FMPx Linking - which I think is another issue), and a control channel is received, the mirroring I mentioned above begins.

I guess I will wait patiently for the next fixes and versions.
 
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