RE: Interferance problem/need pro opinion!
Did you use the same crystal in each Rx, or did you change channels
at the Tx? If you used the same crystal in all 3 Rx's then I would check
again with a differnet crystal.
Another idea.... was the first Rx PCM and the other 2 FM ? If yes,
then maybe the PCM was masking the problem that you found
with the Fm's?
Just a couple of idea's