I dont publish the actual/*exact* elevation of my repeater antenna because its connected to my house and knowing its exact elevation would make it easier for all the mentally-ill people that send me threats to locate it.
So you have two radios, neither of which can transmit to that repeater... So, its very simple:
Tone is wrong
Channel/frequency is wrong
You're too far from the repeater
Repeater is offline
I'm out.
ok.. so you have NOT confirmed the tone is correct..
CHIRP looks good to me, but see what the experts have to say.
Have you ever tested your radio with a power meter?
Those both fall squarely under item #1 of my list.. He has a GMRS radio, and obviously he is a n00b so the mention of "offset" is unnecessary and only adds to his confusion.
There are only 3 possibilities:
You're on the wrong channel
You've entered the wrong code(s)
You're too far from the repeater
The repeater is no longer online
Exactly! Because this advice is WRONG!!
To "get caught" someone must first be looking for you.. and for someone to go looking for you, they must first care...
TL;dr: You can't get caught by the FCC because the FCC isn't looking for you because the FCC does not care.
SOURCE: The record of enforcements over the last 15 years as reported in the FCC's public enforcement database
The Crestline .575 repeater is the official "Radio TJ" non-english repeater in our area - it has a footprint roughly from north San Diego County east toward Landers and Joshua Tree Nation Park, well into Big Bear north east at least to Barstow, and northwest at least to Inyo County...
and yah, there are some long-talkers on that repeater .. Look at the radios behind me in my videos.. They're all set to Ch 16 / .575.. in my newest video I dont think they turned off once.
Not necessarily.. But, usually.
Generally speaking, on average, usually, statistically speaking, most of the time, a purpose-built repeater is going to perform better than a Frankenrepeater.
Only home-made/rinky-dink type repeaters come with those raspberry pi things.. It operates as the 'controller' between what is probably two radios scotch-taped together to control or coordinate the two radios and/or do things like Auto-ID.
A REAL repeater, has no such rinky-dinkn'ess .
Boaters may have, but I dont know nothin 'bout no boat radios..
But for us land-lubbers, there is no universal, agreed upon emergency use channel... SOME (very few) areas might have a GMRS channel assigned for emergency use, but it is limited to only that area.
TL;dr: NO