I have replaced the antenna on the receiver with a sma connector, and tested it with the new antenna,
i switched on a tx and moved quite far, with 2 receivers on, the new modified and one standard, this one had a stronger rf,
I did replace the standard antenna and nothing changed, the rf was still weaker.
so I supposed that the problem could exist already before having fiddled with antennas, my suspicion was about having done
what is your idea?