SteveShannon

And there have been several reports on this forum lately where a person has two, three, or four TD-H3 (or similar) radios and one of them doesn’t work.

You’re unlikely to hear anything from him. That was his one and only visit here. Two years and one day ago.

Back it up then change it to ham and see if it allows you to use GMRS frequencies.

There’s a portion of the 10 meter band (28.300 to 28.500 MHz) where technician class can operate SSB phone.

The other kids got the cool rebellious TD-H3s. He got the one that had overly protective parents.

You’re exactly right.

Your radio is following the following regulation: ”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.”

Maybe you thought it would be like ham radio but without the tests?

I think it’s Rohn makes a mount that angles over the roof ridge and is weighted down.

You should have various components grounded. But it’s not simple. Read this: https://reeve.com/Documents/Articles Papers/Reeve_AntennaSystemGroundingRequirements.pdf

I don’t know about the Commscope, but some antennas do have a nameplate like this one from our repeater‘s 2 meter antenna:

In my opinion, get the extra first. You can do it in two weeks of studying, especially if you just recently got your general. I say that only because it builds on the foundation you built studying for the general. CW is learned completely differently (for me personally at least) not hard, but a different part of my brain, related more to hearing sounds and pattern recognition.

Not greatly, for the simple reason that GMRS range isn’t entirely dependent on signal strength. As you have said numerous times GMRS relies on line of sight rather than output power. Mounting on the hood will definitely bias the direction of the signal, depending on which location of the hood it’s mounted.

Not everyone. Many of us have mentioned this multiple times.

I believe this is why companies use RG-58 for their mobile mounts. It has a solid dielectric that isn’t easily smashed. Cables that are designed to have less loss at uhf frequencies have lightweight foam dielectric material that would allow the shelf to short against the center conductor if smashed or even bent at too small a radius.

But with the right amplifier on UHF, just think of how clear EME could be!

Yes, absolutely. I think we’re in agreement that ham radio operators need to be open to new ways we can help.

Yes, if they’re inverted they’ll have an I following the number usually. Of course it’s possible that the repeater manufacturer uses some other convention to indicate normal or inverted.

You were doing so well until you said the above. I would agree that the role of ham radio is not what it once was, because of things like satellite communications like you mentioned, but in any true emergency, there’s always a role for yet another avenue of communications. Compared to the number of hams, satellite phones are very few. As such, they should be relegated to the higher priority tasks. But many people won’t have access to satellite phones and they will still crave hearing from their loved ones and still need to hear what’s happening in the rest of the world.

At least you have a circle. I have a tiny pie slice...

Good one! Because I’m pedantic, or hung up on semantics, he didn’t say “large-scale emergency”; he said “there is a good chance that no radio service will work large-scale in an emergency.” So my question is what does he mean by “working large-scale”? Is he suggesting all of the various bands available to hams would be congested or something else?

What do you mean by “large-scale”?

You’re welcome. There are lists of open issues and feature requests as well.

Go to this page, look at the closed issues and the date they were closed. https://chirpmyradio.com/projects/chirp/issues?query_id=3

The perfect SWR for any antenna is always 1.0:1, but an SWR up to 2.5 is acceptable if you have low loss feed line. That's true for GMRS as well. An SWR meter for a CB might not work for the UHF frequencies of GMRS. The antenna connectors for CB are usually the same as GMRS, but long lengths of cables that work just fine for CB can really absorb the power of at UHF frequencies, but you probably aren't running more than a few feet in your WWII Jeep. As far as whip length, the length of your CB antenna is probably about 103 inches or something like that; that's a quarter wave whip. The wavelength of CB is 11 meters, or around 33 feet. The wavelength of GMRS is about 64-65 centimeters or right around two feet, so a quarter wave whip would be around six inches. That would look pretty tiny compared to the long CB whip. If I were you, I would just hook up to the antenna and test it to see how it works. Run at low power at first. Modern radios are amazingly resilient to damage from high SWR. See if anyone can hear you. Or stay disconnected from the steel whip and just run your radio with a stubby little GMRS antenna hidden on the Jeep somewhere.