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It’s not really an oversight. The manufacturer simply has to present data for certification that shows adherence to the ERP value as manufactured. Users are required to comply with the regulations but don’t and as we know, the FCC does nothing about it.

Absolutely correct. FCC rules for GMRS Channels 8-14 have the following restrictions: Only handheld portable units The effective radiated power (ERP) of hand-held portable units transmitting on the 467 MHz interstitial channels must not exceed 0.5 Watt. Each GMRS transmitter type capable of transmitting on these channels must be designed such that the ERP does not exceed 0.5 Watt. Bandwidth: narrowband; 12.5 kHz for GMRS transmitters operating on any of the 467 MHz interstitial channels Deviation: on the 467 MHz interstitial channels must not exceed ± 2.5 kHz, and the highest audio frequency contributing substantially to modulation must not exceed 3.125 kHz. Accuracy within 2.5ppm of channel center Also, you cannot design a radio to have a maximum effective radiated power of 0.5w if you don't control what antenna is used, since antenna gain is a factor in ERP. So it might be an oversight but I don't see in the regulations where it says that on 8-14 the antenna must be a fixed antenna. I just noticed today that even channels 1-7 are supposed to have their power calculated by ERP. The "mains" don't have that limitation; 50w is the maximum permissible on repeater inputs and primary 462 channels, measured at the feed line, not in ERP (and nobody cares, nor should they). Anyway, no type approved GMRS mobile radio would be approved if it could transmit on 8-14.

Manufacturers could design mobile radios to put out half a watt, but because FRS regulations require handheld radios and because GMRS regulations limit 8-14 to handheld radios, mobile radios could not be certificates, even if they complied with the output power requirements.

As pointed out FRS channels 8-14 are low power, 0.5 watts max. That's why mobile radios don't include them since they generally can't lower their power to the legal limit, otherwise GMRS and FRS radios use the same "simplex" frequencies. FRS does not have access to the repeater input frequencies whereas GMRS does. Second if you have a GMRS license it's perfectly legal to communicate with FRS radios, even above 2 watts. On channels 1-7 you can use 5 watts max, and on channels 15-22 it's 50 watts max. The point to remember is FRS radios use exclusively narrow-band FM while GMRS uses normal, wide-band, FM. If it's possible using a GMRS radio the bandwidth should be set to narrow-band when talking to FRS radio users. I use mainly commercial grade radios for GMRS. Those have the ability to use either bandwidth. For those radios I program in two banks of frequencies, one wide-band for GMRS, and the other narrow-band for FRS. FRS-GMRS combined channel chart.pdf

I have tested a few 20 watt mobile radios and they only go down to 4-5 watts on low. And that is why mobiles are not allowed to use channels 8-14. Every Part 95 certified GMRS hand held will transmit on channels 8-14 and they will automatically transmit on low power even if you have them programmed to hi power, or at least that's how my Wouxun GMRS hand held's are. All bets are off when using unlocked/modded radios. An unlocked amateur mobile will transmit on channels 8-14 on any power level the radio has. As others have mentioned. just use channels 1-7 and 15-22 and yo will be fine. Someone with their GMRS license can use a 50 watt mobile to talk to someone using an FRS radio on those channels without issues.

I don't know why someone would specifically want a mobile radio that transmits at 2w. Nothing wrong with 2w if that's all you need, but it's a weird requirement. But the MXT-105 is 5w max, and has a low setting that is probably very close to two watts. I haven't measured, but guestimated using paper napkin math and hunches, based on its advertised power input requirements at low and high. If someone has this whimpy radio and a power meter, they could confirm. But they'll likely find low is about 2 watts.

These MP31 radios are GMRS radios and programable using the Baoefeng software. However, their size is very compariable to the bubble pack radios.

The allowed channels for FRS in 95.563 do not include the eight repeater input channels. Although it might be possible to program in those channels, it would be a violation of regulations. Of course the FCC never enforces that, but it’s always a good idea to comply.

Generally speaking, FRS HTs cannot be set for the offsets required by repeaters. In practice, if you have the programming software, you msy be able to offset the transmit frequency by +5 MHz.

Your best bet is the Radioddity DB20-G a/k/a Anytone AT-779UV 20 watt GMRS mini-mobile, cigarette lighter plug, and now supported by Chirp! $89 - $109

@WRUE951 that sounds good. I'm glad you've had good luck with them. My experience isn't terrible, just not ideal results. Since most of mine are EmComm related, I never really ran one for more than a few days at a time, and mostly left them off until I/we need to use them. I know what you mean about learning the hard way. I struggled so much to avoid spending the money on a proper repeater that I probably spent 3 or 4 times more than if I just went for a regular repeater to start. I finally built a full-blown potable repeater system... it can do 2m, 70cm, crossband or act as a base station. It has a built-in 50 amp hr battery system and can run on solar or AC. Retail, it is about $17k to build, but thankfully some stuff was donated and I was able to get great deals on a used repeater and commercial VHF duplexer, which cut the cost down to about 10% of new/retail.

I started out with a KG1000 repeater and never had issues other than desense early on. A couple times a year the repeater got pretty heavy use during nearby off roading events. Yea, they do get hot, but they keep on ticking. I use two Maxons for a portable repeater, they never break a sweat and they are housed in a ventilated ammo can. Now my current Hytera Repeater can run 24/7 with no worries. Amazingly, I paid not to much more for the Hytera radio then the two KG1000’s. I think we all do this, we learn the hard way.

I think it's great that they came up a solution, and as much as I love the KG-UV980P hardware platform, I would never use a KG-1000 nor a KG-UV980P as a full-time unattended repeater. 1.) As good as they are, they are not designed for continuous duty cycles or 24/7 operation. 2.) They may overheat or flat out fail with prolonged use. 3.) The transmit/receive isolation is not as good as a proper repeater, leading to desense issues. 4.) Audio quality and levels can be inconsistent. 5.) VOX or Carrier Operated Switching methods can introduce delays, distortions, and clipping. 6.) There is zero remote monitoring, diagnostics, or telemetry unless you engineer something yourself. 7.) Paired mobiles are extremely inefficient with regard to power consumption. The only time I ever have or ever would use paired radios as a repeater would be for temporary field use and as an emergency backup (maybe). In an emergency, the FCC isn't going to ding anyone for not having the repeater ID on it's own, and for temporary field use the control operator is IDing the repeater every time they ID themselves... so an add-on device is really not needed.

This is true for those using two KG-1000G radios as repeaters.

the break out board option will make it easier to implement a controller of your choice, so basicly you woiiuld be able to set up auto CW in any configuration you choose

I received the same email. I want to do some more research to see if they will ID every 15 minutes 24/7 or if it can be set so that it only IDs every 15 minutes when there is actual traffic on the repeater,

Just got this emial today from BuyTwoWayRadios announcing a solution to adding a controller or Auto CW to the KG1000 radios. https://www.buytwowayradios.com/blog/2025/06/two-new-products-to-auto-id-your-wouxun-kg-1000g-uv980p-repeater-systems.html?utm_source=E20250616-13&utm_medium=email&utm_campaign=E20250616-13

It looks like BuyTwoWayRaidos came up with two solutions making it easier to implement a controller and or an Auto CW board to the KG1000 Radios Just got an emial from them today giving the details. https://www.buytwowayradios.com/blog/2025/06/two-new-products-to-auto-id-your-wouxun-kg-1000g-uv980p-repeater-systems.html?utm_source=E20250616-13&utm_medium=email&utm_campaign=E20250616-13

The bandwidth setting has nothing to do with your issue. Either there are tones on the radio that cannot 'hear', or the two radios are too close to each other when transmitting.

Funny thing is, I'd love to put a repeater up in my area, but no place to put one high up that doesn't want $300/month rent. New Orleans and Baton Rouge have repeaters , funny is 600 in New Orleans, 650 on Northshore, and 700 in Livingston are only repeaters I hear traffic on. But do agree, rest of Louisiana basically has zero repeaters. However finding lots of ham radio clubs building GMRS repeaters for people to use as 3 in New Orleans area are run by ham clubs .

Thanks for come back, looking at the master copy I kept from his radio, I think i may know, even though most radios have functioned with difference. Had pulled the tones, but forgot to set my radio for narrow band (as I was testing on 462.5625 simplex) and maybe the radio wasn't picking up cause of the wide (even though I have run narrow over a wide repeater a few times) but didn't think about wide over a narrow signal. BTW this is from the file I took out as base line for the radio before I modified it, and only thing I could see was wide vs narrow. May have to try again later on again. Thanks all.. been using my uv5r as a licensed operator for years and gotten very familiar with it, but think I forgot differences. Anyway trying to get friend to go GMRS and buy radios where he can get more range for him and his wife so.. WRQD955

i heard that you can buy un-locked UV-5Rs New with some sellers on Ebay.. I guess you have to look for the transmit range when searching

There are two other repeaters in Missouri using the same channel and PL tones as our repeater. One is in the Kansas City area and the other is just outside of St Louis. We are located towards the middle of the state. Here lately with the temperature inversions, one or both of those repeaters have been opening up our repeater. The closest one is 80 miles away. And no we do not see anywhere near 100-200 miles of coverage on UHF here in Missouri.

On the Silverado. I have a Tacoma and mounted a MTXA26 on a mount that attaches to tailgate area using existing bolts. I happen to have a steel bed cover from Peragon. This works very well. There as several repeaters some distance from me that I can hit. I have an NMO mount on the bracket. Being tailgate level it is easy to remove the antenna before going to the car wash.

In the early 70's the USAF fire department used Motorolas, MX330's (?). They were bulky and heavy but we had stubby antennas. One thing we found is they didn't like heat and water was death to them.