195 RF Diplexer Basics Tutorial construction and tuning

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=wv79DSqVi9w

This video introduces the RF Diplexer, which is a pair of filters used to separate RF signals on a single feedline into two different feedlines based on their band of operation. These are commonly used with dual-band radios and satellite communications, where the uplink is often in the VHF frequency band and the downlink is in the UHF frequency band. • The circuit board is shown, and the physical construction of the filter and hand-wound inductors is discussed. Then, the diplexer is connected to the spectrum analyzer with tracking generator and the capacitors are adjusted to tune the filter to the desired response. • This design was presented in the Nov/Dec 2009 issue of the AMSAT Journal in an article authored by Ron Cade W6ZQ. Ron used a program called ELSIE to design the filter. • AMSAT website: • http://www.amsat.org • ELSIE Lumped Element Filter Design software: • http://www.tonnesoftware.com/elsie.html • Video Notes page: • http://www.qsl.net/w2aew/youtube/Basi...

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