W4NNG wrote:
Hello everyone

Like Mike, I also have the MFJ-1800. And boy was I surprised when none of
my shack full of type N to SMA adapters didn't work. I can't believe they
reversed the polarity of the center pins for WIFI SMA connectors. Urrrrgh
!!!

Required by Part 15..Has to be a connector with is "not commonly
available". Reverse Polarity SMA and TNC connectors are pretty standard
for this application, to the point where you can get adapters and jumper
cables pretty easily.