[hpsdr] FreeDV, PowerSDR and Penelope

[walterh at k5wh.net]

Michael,

 As Scott mentioned, that is one of the normal false signals you get at times on FreeDV.

Are you using the latest SM1000 firmware that was released just a couple months ago?

There is also a new 1.4 version of FreeDV we are testing that has some further enhancements and a couple NEW modes as well, like 2020 and 2400b, etc...

Join us on the http://qso.freedv.org site to chat with others using FreeDV and see if you can make some live contacts.

Here in the States we are always on 14.236, but I think you guys use a 40 meter frequency as I recall.

But the QSO-finder site is the best place to sync up with others and where they are operating.

All the best, and hope we get some signals out your way soon.  


Walter/K5WH

-----Original Message-----
From: Hpsdr <hpsdr-bounces at lists.openhpsdr.org> On Behalf Of Michael Carey
Sent: Sunday, October 27, 2019 5:39 AM
To: hpsdr at lists.openhpsdr.org
Subject: [hpsdr] FreeDV, PowerSDR and Penelope

***** High Performance Software Defined Radio Discussion List *****

Hi Everybody,

Does anyone in here have any experience with using FreeDV 1600 together with PowerSDR and the OpenHPSDR hardware?
This weekend I have been trying to get FreeDV working with my HPSDR setup (PowerSDR v3.4.9).

The basics are all working fine, VB Audio's Virtual Audio Cables work great and a pair of Virtual Serial Ports allow CAT control between PowerSDR and the FreeDV software for PTT.  I've used the same setup for decoding DMR and for use with FLdigi/WSPR for some time now.

I am using a Rowetel SM1000 with my Icom IC-7100 to receive the FreeDV.

When transmitting FreeDV 1600 via OpenSDR/Penelope it sort of works, but I am seeing/hearing a regular "glitch" in the transmitted audio that affects decoding via the SM1000.  It doesn't matter if I reduce the VAC audio gain, the glitch is still there.  I believe I've turned off any kind of processing that might affect transmit, but it still isn't as clean as what I can get with the SM1000/IC-7100 setup on transmit.

I've uploaded short unlisted video to my YouTube channel that shows what I am seeing/hearing on transmit.
https://youtu.be/Fnc4W_ZXC0g

The audio going into the VAC on PowerSDR from the FreeDV software sounds clean when I listen to it, as does the audio when I listen with the PowerSDR MON turned on.

I haven't even looked at the reverse path yet, transmitting on the
SM1000 and receiving via the HPSDR. One step at at time. :-)

Any ideas?

Michael.
VK5ZEA



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