What is a Duplexer? How it works and common failures
12:40
Duplexer or Diplexer? What is the difference? Does it matter??
13:43
What is a GMRS Repeater and how to use one
6:01
Radio Antenna Theory 101: what they are, how they work
13:14
Como sintonizar um duplexador UHF para rádio amador e GMRS
4:45
Uncover the Secret Behind Ham Radio Duplexers
12:34
Connect TWO (or Three) Radios To ONE Antenna
9:42
Telewave TPRD-1554 Cavity Duplexer Tuning
12:37