Lscott

1. Tell them not to waste their money buying CCR’s off Amazon for $25. Get a good quality radio. 2. When multiple people are on the same channel/repeater participating in a group discussion to use a simple round table operating format to keep things organized. Everyone gets a turn to talk. 3. In a round table, or just two, delay a few seconds before keying up. Give a breaking station time to jump in, ID, and joint the conversation.

The principal is based on generating a high frequency AC current in a copper “coil”, for lack of a better term, in close proximity to the surface that’s to be heated. The high frequency magnetic field induces a current flow in the surface of the metal. The depth the current penetrates depends on the frequency. The higher the frequency the closer the current remains to the surface, skin effect. Since the metal has resistance heat is generated from P=R*I^2 effect. https://www.routledgehandbooks.com/pdf/doi/10.1201/9781315117485-3 https://ijcrt.org/papers/IJCRT22A6083.pdf

And you still have people questioning the relevance of Ham radio in an emergency.

Schematic http://static2.rigreference.com/manuals/kenwood/kenwood-th-75-schematic-diagram.pdf Service Manual http://static2.rigreference.com/manuals/kenwood/kenwood-th-75-service-manual.pdf User Manual http://static2.rigreference.com/manuals/kenwood/kenwood-th-75-user-manual.pdf The manuals have the Kenwood part numbers you need. Then try searching on places like ebay for them.

Very unlikely. Two different services and the frequencies are hugely different. You should read the past threads on this forum about the possibility of buying a multi-service radio. The probability of the FCC allowing that is zero.

That didn’t stop the idiot. He complained about a high frequency current transformer that we custom designed and build internally. He said it was unnecessary what we did. I explained carefully why it was done that way. Nope. Talked to the head of our standard products group to let him show us how it’s done just to prove his point. Spent a week on it. Installed it. Just like I told him it didn’t work for the exact reason I told him before why it won’t.

That attitude isn’t just confined to forums. Years ago our company had a service engineer who thought he knew more about the high power inverters we use on the heat treat systems the company sells. Got into an argument with me more than once. Didn’t matter I was the main R and D engineer that designed it.

Apparently they, IBM, didn’t. They screwed up in multiple ways with the development and marketing of OS/2. Then, M$ had their own agenda, which didn’t align with IBM’s, and were responsible for part of the joint development effort. I haven’t seen that one, the documentary.

That’s a cool OS. I have Warp 4 running in a VirtualBox VM just to see what it does. IBM really screwed up and let M$ Windows take over the world.

Unfortunately they did. You’re right about that.

I’m old enough not to waste my time playing this game. Another idiot on this forum tried the same thing on another topic. He earned his place on my block list. And that does take some effort and crappy attitude to get there. I wouldn’t be surprised people will just start ignoring you.

The auto companies are wimping out. EV’s use high frequency power inverters, very similar to industrial VFD’s, variable frequency drives, for the traction motors. These generate a lot of RF interference which requires extensive EMC shielding. The AM radios are sensitive to this noise. Rather than fix it the manufacturers just decided to remove the AM radio, poof no complaints and it saved them money. Has nothing to do with big government control or conspiracy theories.

Might just have been bad luck. I had a buddy who purchased a UV-5R and bugged the cops at the local jail with it. When he told me what he was doing I told him to immediately STOP, that’s how you get caught and burned by the FCC. He did. Later found out the FCC was in fact trying to track the source down. Now he’s a happy licensed, after some encouragement from me, a Ham and GMRS user. He learned a valuable lesson without the high cost.

When the cheap $25 UV-5R’s hit the market the above was exactly the problem. People purchase these off places like Amazon, never read the documentation or the notice on the site stating a license was required. They fed treated like toy FRS radios. After a number of years of the above nonsense and increased complaints the FCC finally started clamping down on the CCR manufacturers. That’s when these radios shipped locked to the Ham bands. Don’t want to address the issue with the simple workaround unlock procedures.

With and attitude like that why bother with rules at all? That’s until someone else’s attitude stomps all over you ruining your ability to use the services.

Most radios you enter in a radio ID that’s universal, global, for all the channel settings. I noticed on my new Kenwood NX-1300DUK5’s you can have multiple ID’s in a list. You select which ID to use from the list, for each zone, collection of memory channels. This is done when building the code plug. To change ID’s you switch to a different zone. I’ve notice DMR, very seldom, on some GMRS channels. I used my D878 in Digital Monitor mode to decode it. Looks like it was some local business. Somebody tried to save money by buying the wrong radios and further screwed up by programming them wrong.

These aren’t the right questions. What is missing is not fully reading the applicable regulations for each service first. What wears on people is not being conversant with the regulations and trying to debate the topic. The knowledgeable people will just quit responding.

You can go fishing at least.

I used this for years when I lived in a ground floor apartment. Not ideal but it did work. https://forums.mygmrs.com/gallery/image/268-ca-2x4sr/?context=new

We know, you just can’t help yourself. If the government didn’t create a bunch of rules to complain about we would beg our congress critters to make some. Otherwise we would need to find something useful to do with our time.

It’s far easier from an administrative standpoint. Manufactures only have the technical requirements for one service to meet the qualifications for certification rather than four. Some of those requirements are incompatible with the other services. If the rules change for one then the radio would lose the certification for all. That’s how it would have to work. Assuming people would just refrain from using that service where the radio can’t meet the requirements is not going to happen. The fiasco with combo FRS/GMRS radios before the 2017 rule changes is a case in point. Almost nobody got the GMRS required license to use at the time GMRS exclusive channels.

It gets more interesting if they DON’T have a license. In that case by using the repeater they are obviously breaking the FCC GMRS rules. If a legally licensed user accesses it without permission what are they going to do, complain to the FCC? Then they end up with a big fat fine, maybe get the radios and repeater confiscated. They would be better off saying nothing and continue using it since the FCC isn’t interested, yet, and ignoring the other users.

I would inspect it VERY THOROUGHLY AND CAREFULLY first. Depending on materials a cheap galvanized steel tower may have rusted through sections that can fail in a wind gust. Aluminum would be better. Other things to look for are cracks in the main vertical supports. Look at the welds where the zig-zag stiffing members attach to the main side supports. Another is at the top where the mast mounts to the tower. Cheap towers are nice. But not when they fail, falling on the utility wires, house, garage or your ride. Maybe even you.

I do the same at home. Also use a CCR at work to monitor the channels and the local mall’s security staff.

There is another kind of grinder, but it has nothing in common with coffee.