Help about says that I am using 3.186. So,
the mystery remains. I don't think this is
a phase problem as Charles suggested
because signals work fine in the opposite
direction; if I transmit from the computer,
appliances plugged into the transceiver
respond.
When I monitor activity in AHP, I usually
do see a signal twice, but don't see it at
all when it is received by the non USB
transciever.