Hi Ron,
If you've ever used BNC connectors in a lab environment -- especially above about 30 MHz -- you soon become aware of their shortcomings especially if they don't fit snugly. I've never noticed BNC problems at HF frequencies except for worn (or cheaply made) connectors that fit very loosely. I'm sure the Amphenol connectors are very high quality and perhaps not as leaky and unreliable as generic (or worn) connectors 73 Frank W3LPL ----- Original Message ----- From: "Ron D'Eau Claire" <r...@cobi.biz> To: donov...@starpower.net, "Elecraft Reflector" <elecraft@mailman.qth.net> Sent: Tuesday, April 4, 2017 9:09:32 PM Subject: RE: [Elecraft] K3 loss of rx signal Good point Frank. Amphenol specs leakage for their BNC connectors at 3GHz where they claim 55 dB. By comparison they claim 90 dB at 3 GHz for their type N connectors. I've never felt the need for the additional shielding in the shack. Of course these are Amphenol specs. Any other brand may have any other level of leakage. As many have noted, the extra price of a good connector is saved many times over chasing bad cable connections later. BNC specs http://www.amphenolrf.com/connectors/bnc.html N specs: http://www.amphenolrf.com/connectors/n-type.html 73, Ron AC7AC -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of donov...@starpower.net Sent: Monday, April 3, 2017 9:38 PM To: Elecraft Reflector Subject: Re: [Elecraft] K3 loss of rx signal BNC connectors rate high for convenience and low for performance, especially leakage performance. BNC connector leakage typicallymeasures in the range from -25 to -50 dB vs -60 to -90 dB for N connectors. Any BNC connector that does not fit snugly should replaced and discarded 73 Frank W3LPL ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
