This is a bug fix release for FoxTelem to fix an issue with the IQ decoder for PSK. If everything is working for you, then you do not need to upgrade. This has been tested for a couple of days but has not had the long regression testing that we usually do.

I'm releasing it now (quickly) because if you are using the internal SDR in FoxTelem, in IQ mode, then this is a mandatory upgrade. It does not work well with weak signals currently and this fixes that. It worked fine in the lab, hi hi. It should now perform as well as a separate SDR. I personally am still getting much better performance from my old FT736R and others are getting good results with modern radios. But this raises the performance of SDR based decodes.

http://amsat.us/FoxTelem/windows/ http://amsat.us/FoxTelem/linux/ http://amsat.us/FoxTelem/mac/

One thing worth considering. Doppler tracking works better than FindSignal but you have to be using the latest keps and you need to consider exactly what the downlink frequency needs to be set to for your situation. Note that FoxTelem already offsets by 1.4kHz to put set the center of the PSK signal in the sideband. You don't need to offset it. (You do if you are using a seperate SDR and feeding the audio to FoxTelem).

If you are running in FindSignal mode (without keps) then the bit SNR level at the bottom of the window is critical. For COSTAS it needs to be about 1.5 for Dot Prod it MUST be lower, say 0.5, Otherwise it will never lock on.

Yea, lots of settings to get wrong. Have fun playing. Please send reports and let me know how it works for you.

73 Chris g0kla / ac2cz