On 1/28/21 12:04 PM, Alan Rich wrote:
> for the Fox 1E transponder LO or something other than just the beacon.
> Is there a detail block diagram available of the transponder that would
> call out the LO frequency ? (I'm guessing 581.65 MHz if its a single
> conversion) or any details of the passband filtering?  Maybe there is
> enough LO leakage out the front or back end of the transponder to
> receive.  If there is an AGC/ALC, the TX might be putting out a noise
> bump that could be seen by the SDR also.

I did not see the linear transponder design or a block diagram in any of
the Symposium Proceedings that I have, but someone else on the list
might know if this design was ever released as part of the ITAR "data
dump" in the Proceedings.

73,

--- Zach
N0ZGO

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