Hello AMSATers,
I'm looking to record both TX and RX audio to a digital recorder, either at the QTH or in the field (but mainly in the field), in either of two common scenarios:
1. TX from one radio, and RX from a different radio (as in satellite use with one radio for uplink and one for downlink).
2. TX/RX from the same radio (as in a full-duplex radio for FM satellites, or for non-satellite use).
I'm wondering if you know of a device (or a published circuit design) that will allow TX/RX recording while isolating the radios from each other and/or a radio's TX from it's RX, while linked to the same recorder? I have to believe this is a well-solved problem within the satellite radio community but I haven't found too many ideas for field use. This is seems to be an easier problem to solve at the QTH if recording to computer, with various sound interfaces (Signalink, etc.) so my main interest is in field use with a digital recorder so I can record my QSO's while juggling two radios plus antenna, etc. The easy alternative is just to record the RX side, which is easy, and works for logging but doesn't give you the full exchange.
Thanks & 73! Ken VA7KBM