SteveShannon

I completely agree, Kenny. I also cannot find anything on either FCC or ISDE sites other than the limitation expressed on the license. I wonder if this is simply a case of someone neglecting to update the license text.

It could be a battery charger, one of those wall warts, a computer power supply with problems, fluorescent lights, LED lights, almost anything. Unplug things until it stops. Such noise is not uncommon.

The specific restrictions are not in parts A and E. I don’t know if they ever were. Because changes to regulations are subject to the NPRM process by law, a better way to link regulations to treaties is by reference, which is done in 95.309, the superior portion of part 95 that affects all of the subparts: § 95.309 Coordination procedures and other restrictions for operation in certain locations. The operator of a Personal Radio Service station may be required to coordinate operation in advance and/or may be subject to operating restrictions if the station is to be operated in certain locations, described in the following paragraphs in this section. (b) Near a U.S. border or in an area that is or may be subject to an international treaty or agreement. Treaties and agreements may be viewed or downloaded from the FCC Web site: http://www.fcc.gov/ib/sand/agree/. The link in the quote leads to a bunch of agreements. The treaty that initially set aside Line A is referred to loosely as the Above 30 MHz Agreement, but there have been amendments and other treaties since 1962. I never have been able to find something other than my license that specifically states I cannot use channel 19 above Line A, so I really don’t know where to go to verify it. If new licenses continue to include that wording then I will avoid using the channel.

My first thought was to see if Wouxun has an FRS radio. They have an FRS version of their 805. https://www.buytwowayradios.com/wouxun-kg-805f-two-pack.html?fee=5&fep=5285&utm_source=google_shopping&utm_medium=feed&utm_campaign=product_ppc&matchtype=&keyword=&device=c&adposition=&network=g&gad_source=1&gbraid=0AAAAAC4SJ1idKy2EUZLQOnDFF8I9Rl-z1&gclid=Cj0KCQjw-5y1BhC-ARIsAAM_oKnUq5DVMsuZesWEiOFTuP0NgNb_x5-y_uFyqh7IXHCv-CiS1rDtpQQaAlTxEALw_wcB

500 feet certainly should have been enough. In that case I have no idea what is causing the MXT115 to stop receiving after the first few seconds. Is it only transmissions to the MXT115? Are transmissions from it to other radios okay?

I considered mentioning that, but my license was printed almost three years ago. I don’t have a more current copy of a printed license.

I gave a possible answer in the other thread where you asked the same question. Good luck!

Separate the transmitting radio from the mxt115 radio by a greater distance and see if the problem continues. Your MXT115 might be desensing (going deaf temporarily because of a strong nearby signal.)

Why do you think that, Kenny? Certainly it’s still defined on this page: https://www.fcc.gov/engineering-technology/electromagnetic-compatibility-division/frequency-coordination-canada-below

Tonkatoy only made two posts nearly six years ago and hasn’t been online here since 2022.

Did you try right clicking on the executable and selecting “run in compatibility mode”? Also, you can type alt+prt SCR or ctrl+prt SCR to take screenshots rather than using a camera.

No taxation without representation!

Off road -> 16 On road-> 19 (by Queen decree) Those of us who live near or above “Line A” reserve the right to disregard His Majesty the Queen.

No, if it’s a ground plane antenna it needs to couple to either the roof, hood, or trunk lid somehow (or a sheet of conductive material of some type), otherwise it will not receive well. But it can do so capacitively even through a layer of paint or thin plastic or rubber. I’m saying it doesn’t need to be an DC electrical connection that can be verified with an ohmmeter. Because it’s RF a layer of paint isn’t an impediment. Nobody sands off the paint to use a magnetic base, right?

The traditional use of the word “skip” applies to hf radio signals bouncing off the ionosphere. UHF doesn’t do that, but it does propagate long distances sometimes when there’s a temperature inversion which causes tropospheric propagation, also called tropospheric ducting.

I don’t see how my question strikes you as a negative comment. I was just surprised to hear you suggest 11 meters needed more users when many users of GMRS are upset about congestion.

Is CB underutilized?

It is simply not necessary to have DC continuity between an antenna base and the body of the vehicle. Magnetic bases have no DC continuity to the roof and work just fine. The RF connection is easily made through paint. However, with that said, an intermittent electrical connection between car body parts and an antenna base can cause static interference. You will see people bonding car parts together using short braided jumpers in an effort to minimize noise.

It’s not as simple as that. Some of the thirty GMRS frequencies listed in four different groups have specific limitations for power and bandwidth. The easiest way to ensure you comply is to purchase a radio that has been certified for GMRS. A better way to think of this is to understand that your license doesn’t license you to use specific frequencies, but rather to use certified GMRS radios. There are amateur radios that are not certified but allow you to transmit on GMRS frequencies. It’s highly unlikely you would be cited; almost nobody ever has been. I don’t know if the UV-82 is one. Personally I buy GMRS radios for GMRS. It’s just easier. And I buy amateur radios for amateur radio use. That way I don’t even need to think about it. If someone tells me to use channel 20, I know what exactly they mean. Repeater channels only need CTCSS or DCS tones added because they’re already programmed.

§ 95.1763 GMRS channels. The GMRS is allotted 30 channels—16 main channels and 14 interstitial channels. GMRS stations may transmit on any of the channels as indicated below. (a) 462 MHz main channels. Only mobile, hand-held portable, repeater, base and fixed stations may transmit on these 8 channels. The channel center frequencies are: 462.5500, 462.5750, 462.6000, 462.6250, 462.6500, 462.6750, 462.7000, and 462.7250 MHz. (b) 462 MHz interstitial channels. Only mobile, hand-held portable and base stations may transmit on these 7 channels. The channel center frequencies are: 462.5625, 462.5875, 462.6125, 462.6375, 462.6625, 462.6875, and 462.7125 MHz. (c) 467 MHz main channels. Only mobile, hand-held portable, control and fixed stations may transmit on these 8 channels. Mobile, hand-held portable and control stations may transmit on these channels only when communicating through a repeater station or making brief test transmissions in accordance with § 95.319(c). The channel center frequencies are: 467.5500, 467.5750, 467.6000, 467.6250, 467.6500, 467.6750, 467.7000, and 467.7250 MHz. (d) 467 MHz interstitial channels. Only hand-held portable units may transmit on these 7 channels. The channel center frequencies are: 467.5625, 467.5875, 467.6125, 467.6375, 467.6625, 467.6875, and 467.7125 MHz.

I agree there’s nothing wrong with narrowband but what does your part 90 license have to do with your GMRS repeater?

Agreed, but the fact that radios may not be certified for GMRS if they are easily used for amateur radio, removes commercial motivation for producing an amateur/GMRS antenna. “No GMRS transmitter will be certified for use in the GMRS if it is equipped with the capabilities to operate in services that do not require equipment certification, such as the Amateur Radio Service.”

He often is!!

That looks right.

That’s correct but you must also send the correct CTCSS tone or DCS code in order for the repeater to pass what it receives to the transmitter.