While not an RF application. 75 ohm connector BNC and others are important to the digital video production environment. It is my understanding that a 50 ohm barrel at the end of the correct length of coax will stop a digital video signal. I am in the process of installing a new digital switcher and I am watching connector, barrels, terminators impedances closely.
Rick Kent WD8AJG K2 5296 -----Original Message----- I've received a question about compatibility of 50 ohm BNC male connectors with the 75 ohm female BNC connectors on Exetron's ADA 6 300MX video distribution amplifier. Amphenol makes the following statement about 50 and 75 ohm BNC connectors: "Two distinct types of 75 O BNC's are available, and both mate with each other and with 50 O BNC's. Type 1 is designated 75 O BNC-T1 and provides constant 75 O performance with low VSWR DC 4 GHz. Type 2 is designated 75 O BNC-T2 and is usable with low reflection DC - 1 GHz. For applications above 1 GHz, Type 1 is recommended. " Unlike BNC connectors, however, please remember that 50 and 75 ohm Type N connectors are not mechanically interchangeable and that physical damage results when a 50 ohm N male connector is inserted into a 75 ohm female N connector. I've added more details on using an ADA 6 300MX to distribute timing signals in today's update. http://www.cliftonlaboratories.com/Updates.htm Jack K8ZOA www.cliftonlaboratories.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
