Tuning a UHF Bandpass Filter - RX Preselectors and What They Do
21:44
The Rubidium Frequency Standard (Inner Workings Explained)
34:10
37 - Building & Testing a Band Pass Filter
11:32
What is a Duplexer? How it works and common failures
33:58
Tuning Motorola uhf duplexer and 1/4 wave stub using the rigol dsa815 spectrum analyzer
15:32
#334: How to tune a duplexer with a NanoVNA V2plus4 | is it possible?
9:13
2 Meter Hybrid Ring to BPBR Duplexer conversion
34:00
An In-Depth Look at the Kenwood VP8000 - Thoughts and Performance Testing
19:21