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Just a clarification. Un-related parties would need to have separate licenses, but a family business could certainly operate all under one License/Call Sign if all parties are close relatives - ie: Father/son business, family farm, etc. I mention this because I know of a few relatives who operate a family farm and use GMRS for their operations. 100% legit with just one Licensed call sign. As mbrun mentioned above, the loss prevention team is likely operating FRS radios at 2 watts, which probably works for them, and they don't have a clue that anyone operating on GMRS could step all over them. If that isn't happening, it's kind of like the proverbial tree falling in the forest.

I drove to work today with my Radioddity DB-20G in my car and it did exactly the same thing as the Anytone 779UV. So I'll just turn off PL tone decode / CTCSS squelch for this one channel. Meanwhile I'll keep working at figuring out what exactly is different about this one repeater.

A GMRS radio can only be used for business only if all parties have a license and therefor a callsign, or if the business holds a grandfathered/legacy license for using a particular GMRS frequency. Current generation FRS radios however share 21 frequencies with GMRS. The 462.7000 frequency listed above is one of those frequencies. That frequency can be used by FRS radios for simplex communication at up to 2-watts transmit power. On GMRS that same frequency can be used for simplex or duplex (repeater) communication at up to 50watts. Also, GMRS and FRS share many of the same CTCSS and DCS tones. This therefore makes it possible users of the two services to hear and/or communicate with one another even when codes are in use. Hope this helps. Michael WRHS965 KE8PLM

Good Day Dan. Yes, the length of cable does have an effect on both transmission and reception equally. As does air, trees, buildings, antennas, hills and other medium that reside between two radios that are trying to communicate. In effect, power is lost/consumed as it travels through any medium. Yes, cable can effect SWR. If the cable is damaged or the connectors are poor quality or mate poorly the cable assembly can cause an elevated SWR, whereas a good cable assembly that is particularly long and otherwise has excessive loss can make the SWR misleadingly low. Michael WRHS965 KE8PLM

Good Day Jim. Welcome to the forum. Michael WRHS965 KE8PLM

this is how i did the install on my 07 jkur. i installed the base under the factory infinity amp and remote mounted the head above the mirror, im using the 5\8 over 5\8 shorty.

Edit: Never mind. I finally figured it out

Yeah, some members are strong Motorola devotees for exactly that reason...they hold up well in high rf environments. what's the term @gman1971 uses....fire breathing RF monsters?

Alright. Since I am the guy with the tens of thousands of dollars setup and the commercial install I believe I need to interject here. Never did I say that a small repeater system is useless. And there are COMMERCIAL repeaters available that ARE indeed two mobiles in a box with a controller between them. And those work find if that is all you need. My point was if you are going to put up a big commercial grade install that you need to NOT pull the crap of wanting fee's paid for access, as this level of install has a huge footprint that will interfere with other repeaters on the same frequency in that footprint. And the frequency resource is limited for repeaters. I am all for guys that want to put up a repeater on their roof or short TV tower and be able to talk 8 or 10 miles. This sort of thing SHOULD be encouraged. But you still need to be aware of others on the frequency and try to find a quiet pair to set your repeater up on. The other thing that needs to be said here is IF you are going to stick an antenna WAY up in the air and cover a 60 to 80 mile radius, you DO need to have good commercial equipment and not two portables with a back to back cable between them and a cheap duplexer. And here's the reason. If you are the only one that will be using it, and the usage is light, it don't matter. But with a big coverage footprint there is a good chance that it will see a lot of use and portable radios are NOT designed to be run at that duty cycle. The commercial repeaters I use for GMRS are 100% CCS (continuous commercial service) rated. This means they are designed to be transmitting up to 100% of the time, 27/7/365 and live. If you were to try that with the two back to back mobiles the transmitter would not survive the abuse, even with a fan and additional cooling. Now, my repeaters are only logging 30 to 45 minutes of use a day currently... but that number keeps increasing. And that's fine. I built it to run all the time, and offer it for free to all licensed users in the coverage area to use at their leisure. But I would hate to see someone put in inferior gear at some remote site and it die when it was needed. That situation is actually worse in my mind than it not being there at all. Because if it's needed and expected to be operational. And that operational repeater is part of someones emergency plan, then it needs to work as such.