Hi!
Since the FUNcube Dongle Pro+ appears as a sound device to Windows, you can have two programs connect to it at the same time - provided they use the same LO/center frequency and input bandwidth settings.
Chris confirmed via e-mail last night that the FoxTelem software uses 192 kHz bandwidth from the FUNcube dongle. With this information, I set HDSDR's LO frequency to be 145.960 MHz (a little below the 145.980 MHz downlink frequency), and used this frequency as the center frequency in FoxTelem. I set the Input Bandwidth in HDSDR to be 192000, to match what FoxTelem expects to see. I found that I had to start HDSDR first, and then start FoxTelem, so both programs could access the dongle. Then I didn't have to use a virtual audio cable (or, for some Windows 7 and older PCs, the Stereo Mix audio device that does the same thing) to pipe audio from HDSDR to FoxTelem. Each program can then do what you want - in my case, HDSDR wrote an RF recording, while FoxTelem decoded telemetry. You can also mute the audio from either program, so you aren't listening to the same audio from both programs (HDSDR has a Mute button on the screen, and FoxTelem has a Silence Speaker button).
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
If you use a program like HDSDR, then you can also feed the IQ audio to
FoxTelem rather than the decoded audio.