UHF BNC N Connector Return Loss Compared

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=40ESujVdg7A

Just a quick look at BNC-UHF, BNC-BNC, and BNC-N Adapter Return Loss at HF, VHF, and UHF to determine their suitability for use at Ham frequencies up to 1300 MHz. • Summary: 'UHF' connectors should be used below 150 MHz. BNC and N connectors are shown to be good up to the 1500 MHz limit of my Rigol DSA185-TG. By similarity we can assume that TNC, essentially a threaded version of a BNC, will have similar performance since it is still part of the 'NC' family of connectors. • Those paying close attention to the traces will notice why BNC connectors, though otherwise good at these frequencies, should probably only be used for test setups where quick connect/disconnect is required. During the video you will note that when i dropped the BNC connectors on the desk (3:16) and while I was handling the BNC adapter stack up (3:56) there was some obvious contact problems generating a spike in one case and contact noise in the other. That is why TNC connectors are used as a smaller diameter alternative to Type-N connectors in mobile applications instead of BNC connectors. • Comments and questions welcome.

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