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Hypothetically, but the internal duplexer has a 10 MHz split centered on 442 MHz. You'd have to connect an external "flatpack" duplexer, but at that point… Yeah, you've kitbashed together a cheap effective duplexer for around $300. It should outperform the RT97L, frankly -- at least if you use the right kind of duplexer, but they're increasingly cheap and ubiquitous.

This is smack in the middle of the "magic band", which is especially suitable for meteor-bounce communication and other really weird shit. We'll do fun propagation science to it, even if we need to buy a GMRS license to do it. That sounds just about fucking ideal for linking repeater sites over the air. How much digital data can we squish into the CTCSS frequencies? Something like AllStar without internet interconnections should be rules-compliant.

I also feel like MURS and FRS ought to be merged, since their rules are so close to identical. This would mean removable antennas on FRS radios, which… should be mostly a nothingburger with a few "duckheads" running amplifiers to create high-powered jamming equipment but… you can already do that today, it doesn't happen, so we shouldn't be forced onto fixed antennas because stupid people want us to not have nice things. Seriously, it's a non-thing. Time to drop it.

For GMRS Wyoming designated 307 (channel 3, CTCSS tone #7) because the entire state has 307 as its area code. I don’t know anything like that in Montana. Here it would be 406.

Sven, I think you’ve lost your marbles, That’s exactly why you have call signs and why you’re required to use them: to identify yourself to others and have a way to look them up when you engage in the personal or business activities of “making contact”. Although it’s not explicitly encouraged like ham radio it’s absolutely not discouraged in any way, explicitly or implicitly.

"Making contacts" with anonymous men certainly counts as a personal activity... Very.. very personal..

Welcome.

Define personal activities.

I realized that after reading the manual. The Mandela effect is kicking hard because when I posted, I thought I had questions and then Randy asked and I was unprepared and stymied. The information I craved was now gone...Weird. My cravings for Maroon crayons has jaded my perspective on life as I know it...Maybe it is a conspiracy involving pork...or rubber ducks on a dash board...or phonetic language rotting my brain...DAMN, the world is too flat for this stuff! I'll be over here rocking back and forth with my aluminum wrap until I have to go to work again...lmao with beverages....

Well it’s right there.. Personal and business activities. Concerned parties. Not “making contacts” across licenses.

Just another matrix program, you aren't really even here.

Tropospheric Ducting as another way?

Diffraction

So you are here talking to a bunch of tech radio dorks and you think it's OK to be vague. OK.

Always write to the lowest common denominator.

There is a designated frequency for emergency use on Marine radio (be careful though, may be monitored by Coast Guard). Nothing I know of for hikers (except Montana I think designated ch. 3).

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

are they're any specific UHF/VHF frequencies for emergency use for boaters, hikers, etc? I've cane uo wotu several different answers using Google. does 1 need a special license?

I should have been more precise in my statement by saying that a FRS radio can't transmit on GMRS repeater channels. I never know when a simple answer or a precise answer is needed around here.

Can't transmit into a repeater. Can absolutely transmit on ch 550-725

That, or what I suspect I'm hearing, GMRS radios being used as FRS radios with no ID.

Uh huh.. Then... Why do I hear FRS radios every time I'm on any of the GMRS repeater channels? and, why can I hear all of my locked/legal FRS radios on the GMRS repeater channels ? I am very confused.

EASY PEASY that even a lowly Private can understand. Legal FRS radios can't transmit on the GMRS repeater channels. All bets are off if someone is using an unlocked radio.

Please explain this one to us...

Yes following the regs does matter and why I stated the following: One really can't tell if someone is on a FRS radio or GMRS radio when using simplex channels as the FCC messed up when they allowed both services on the same channels. Obviously you won't ever hear a FRS radio on the GMRS repeater channels. Again. GO with what works for you on how often you say you call sign as long as you are at a minimum giving it every 15 minutes and at the end of your conversation.