RTK UHF Radio problem debugging

What do RTK Radios sound like?
How can you tell if there is another base already transmitting on the frequency you intend to use?
How do you setup a radio to listen?
What does it sound like if two base stations are on the same frequency?
What does a RTK repeater sound like? Same frequency or cross-frequency repeating?
Get an inexpensive radio
https://a.co/d/aLJUYdx https://a.co/d/15TE29K *
keep it charged and available at all times when you are using UHF radios for RTK message exchange.
*These are NOT affiliate links and I don’t receive anything if you use them.

Contents:
00:00 Title Card
00:01 Introduction
00:45 Radio setup
01:55 Moni (Monitor) button
02:30 Base transmitting
03:15 Someone else on the same frequency?
03:50 Repeater, same frequency in and out
04:30 Repeater, cross frequency (in 461.025, out 464.750)
06:10 Conclusion: always carry a handheld radio when using UHF