Review on 🌩️ N-Female to N-Female Bulkhead Adapter with Surge Protector 0-6GHz - WiFi Antenna Coaxial Cable RF Converter - Wireless Network Connector - Lightning Protection Arrestor - Coax Suppressor - Tupavco TP1605 by David Dreher

I believe this thing has variable impedance, but I don't have a $100,000 S-parameter test kit to prove it. What I do know is that when this cheap Chinese PoS clone is inserted into the antenna line, I can't receive anything above 750MHz. If an identical looking (and how about that!) spark gap from a well-known brand is substituted in their place, the same signals will pass easily. It has a central through pin to the central pin. It is open from the center pin to the body. 6GHz?!? Do not make me laugh. DO NOT BUY. I banged my head against the wall trying to figure out why my SDR software wasn't working and finally traced the problem back to this device.