[Amps] "N, " "TNC" and "BNC" connectors are rated at 500 Watts and work at 1, 000 Watts as log as the load is good..

[peter chadwick]

Passive IMD had been a problem for many years (at least 60!) at multi transmitter/receiver sites - popularly called "rusty bolt effect" when applied to repeaters. It's even worse on ships, especially naval vessels with several transmitters and receivers trying to work simultaneously, with stays and chains and wire ropes etc making intermittent contact. Plessey Microwave Materials in the UK developed some (quite expensive) "Anti-intermodulation grease" for the Royal Navy, which had good lubricating properties, was resistant to sea water and was conductive. As the company doesn't exist any more, I don't know if it is still available - possibly a part of BAe still do it.

I suspect the large contact surface for a UHF connector means it not bad for PIMD!

73

Peter G3RZP