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There's an area in Utah that uses Channel 9 / Tone 11. Using a low power channel with a tone seems butt stupid to me, but I guess it's easy to remember... Edit: I misremembered slightly. 9 / 11 for when a rescue is underway. Which...changing channels when you're already talking to the guy also seems butt stupid when you have a comms link set up that works. https://utahavalanchecenter.org/education/group-group-radio-channel-initiative

Both MURS and FRS lie just above the Ham 2M and 70cm bands. The ratio between the mid point of the 2M band frequency range to the mid point of the MURS band is 0.953. The ratio between the mid point of the 70cm band frequency range to the mid point of the FRS band is 0.946. It's an almost identical ratio so a simple reduction on the element length would likely work just fine for both to modify a Ham dual band rubber duck antenna.

I am a new radio user. I purchased the Baofeng AR5RM hand radio. I want to talk to my family that live within a 10 mile radius in the Kansas City, KS area. I have a GMRS license. Questions. How do I optimze range, at this point it only goes about half kilometer? Need at least 10 miles. Do I need a repeater to boost signal? I have Chirp installed on my computer.

i have one thats unlocked and love it.. Nice radio.. I read in QRZ awhile back that Wouxun's are actually made by Hytera. If you put a PD782 and the UV9gx together its hard to distinguish between the two other than the screen resolutions which is much better on the Hytera.. Radio programing ais all much different between them.

It would be easy to make a dual band antenna that covers MURS and FRS/GMRS. It's done all of the time for 2m and 70cm dual band radios. Tri band and quad band hand held radios generally require two antennas: one for 2m/70cm and another for 1.25m and 6m. The cat's out of the bag when it comes to actually separating FRS from GMRS. I doubt that will ever happen. But I could be wrong on that.

Actually it is right below the 6m band which is 50.0 MHz to 54.0 MHz. The US Military still uses 30 MHz to 70 MHz. Some source state 30 MHz to 75 MHz or 88 MHz. This includes the frequency hopping SINCGARS radio system. Yes 46 MHz or 49 MHz could be used for public two way coms but that portion of the VHF spectrum can be fickle hence calling the 6m band the magic band as it is either open or closed and you never know which it is. And openings don't stay open very long.

Maybe not a bad idea. One could pick the frequency band that works best for the local conditions without being forced to carry two radios. The removable antenna bit could be a hangup issue however with the FCC. Otherwise no real technical difficulty. Hams had dual band HT's radios for decades. People have been doing this on the sly for a long while ever since dual band radios were around with the MARS/CAP mod's, or the opened CCR's like the UV-5R.

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?