Below you will find pages that utilize the taxonomy term “amateur radio”
UHF Duplexer Tuning for Ham Repeater
UHF Duplexer Tuning for Ham Repeater using a Spectrum Analyser and Tracking Generator.
RZR VHF UHF Dual Band Antenna Mount, Weld and Tune
I made a tab for NMO mount for the RZR. The mount is welded to a tube on the rear. I go over the process of tuning the antenna for both the UHF and VHF bands. Items used in this video TYT Radio - http://amzn.to/2DUajzn TRAM Antenna - http://amzn.to/2Bfobkx
Motorola R2210B/HS Repair Teardown Part 2
This is a video of a Ebay purchase of a non-working Motorola R2210B HS Radio Service Monitor. In Part 2, I identify parts the will need to be replaced and how I tested the relays.
DIY GPSDO Hacked Nortel GPS Disciplined Oscillator
Hacking Nortel Trimble Module for use as a frequency reference GPSDO for the DIY lab.