I finally got the Bitx40 wired up and the receiver is great. ?The frequency is off by .02 but that is not an issue right now. ?The PTT does not seem to be working. When using the supplied switch, an existing PTT switch wired to the connector or just touching the connector wires does not trip the PTT relay. ?I continue to hear the received signal in the headset and nothing on the watt meter. ?The voltage across the contacts is around 7.3. ?Any ideas??