WRTC928

I'm doubtful there is anything which can be done, but I'm going to throw this out there. Even if nobody can help, it still might be useful for others to know this. I have a BTech RPT50 repeater operating on 462.55000 tone 233.6. I also have a TYT TH-9800 and a TH-7900, neither of which will connect reliably to the repeater. The 9800 will sometimes connect after holding the PTT button for 5 seconds or so, but the 7900 just flatly refuses to connect at all. I tried them on a Retevis RT97L repeater using the same frequency and tone and they connected just fine. They work just fine on all the other repeaters I've tried, but obviously I don't know the brand/type of those repeaters. I quadruple-checked all the frequency and tone settings and I'm absolutely certain they're right. I tried the radios on the same repeater using various frequencies and CTCSS/DTCS tones with the same result. They'll receive but they won't transmit to the repeater. I checked all the settings and reprogrammed them using CHIRP and also the TYT CPS with no change. Baofeng, Retevis, QYT, AnyTone, and Arcshell radios have no problem connecting to the repeater. I can only conclude that there's some sort of incompatibility between the two brands. At this point, the only thing I can think of to do is replace the radios. If anyone else has tried TYT radios on a BTech repeater, I'd be interested to know if you ran into this problem.

I had familiarization training on those, but never actually used one. What I went away with was the feeling that if I ever had to use one in actual combat, I wouldn't remember how. By the late 1970s, they were in some vehicles, but I never saw one in a ground-pounder unit.

I don't think there would be room for the Anina NMO+90 degree adapter between the headliner and roof of either of my vehicles. You probably should do some measurements before you decide.

I was a police officer in the early 1980s and that's pretty much how we all felt, but we accepted it because there weren't any other options.

As far as I can determine, exactly 3 people in the US use FM CB. Is that better?

I got phone calls from both my sons and a sweet text from my granddaughter. That's better than anything radio-related.

True, but if they had used the radio as little as they probably really did, the movie would have been much less exciting. I believe you're referring to Bat 21 which was supposedly based upon an actual incident. I give Hollywood a little slack on some of these things. Nobody wants to see a movie about a bunch of soldiers who spend 20 days standing around scratching their b@lls and then have a 3.6 minute firefight.

I set duplex to off on 8-14 so I can monitor them but not transmit. Should there be a legitimate reason to do so, I can pretty quickly restore the transmit capability on that frequency. It's hard to imagine a situation where that would be necessary, but I can do it if I need to. I just do all my GMRS communication on the other channels.

I dunno about everyone else, but I do it by selecting 20 kHz or 12.5 kHz when I program the radio, according to what's authorized for the frequency.

I have read that manufacturers wanted it approved so they could sell the same units in the US and Europe. I have no idea if that's true, but it makes sense. If it's true, the manufacturers wouldn't care if the FM feature goes unused and US users would have no incentive to use it.

Congrats to your mother! Being old is not for the weak.

I'm celebrating by going to an Edgar Allan Poe pop-up speakeasy.

Not that I'm planning to participate in any crimes, but it seems the best solution is just to leave it at home. If they did that, FRS radios could certainly be handy for coordination.

I hadn't thought about loss in the cable causing an artificially high power reading, but now that you mention it...I guess it could. Thanks. None of the antennas I tested are likely to be the one I ultimately end up using, and I have 50' of LMR400 Ultraflex to feed it. There's always going to be some loss. All we can do is keep it to a minimum. As far as I know, anything you can easily coil up and carry is going to have quite a bit of loss at 462 MHz.

Yes, I have driven extensively in the central US with a CB and I hear some traffic on AM but nothing on FM. Others in CB forums have had the same experience. Most (all?) CBs sold in the US today have both AM and FM capability, but it seems that it rarely gets used. I don't count myself as a "user" of FM CB because I just listen. I haven't randomly gotten on CB and announced my presence for several decades. Would someone answer if I did so on FM? I don't know. I use CB almost exclusively to monitor road conditions, and all of that is on AM. My TYT TH-9800 will scan both AM and FM frequencies and I have yet to hear anyone on FM. I have a CB on a separate antenna in case I want to transmit, but I hardly ever do. Mostly I just hear a sh*tshow with occasional business use and highway conditions.

I checked it with a dummy load and got a consistent 18 watts, which is about what I would expect, given the loss due to the duplexer. I'm puzzled about why I get different power readings with different antennas, though. If someone can explain it, please do. I'm still learning.

Sorry, no. I do what @LeoG recommended. It's surprisingly capable for a $25 radio, but it's still a $25 radio. You can't expect everything.

So, if I turn my phone off at my home, it won't be detectable again until I turn it back on?

True, but I was actually thinking of vehicle-mounted radios. When I think of CB, I still think of mobile units. Probably because I'm old.

As far as I can determine, exactly nobody in the US uses FM CB. I would think FM with PL tones would be very good for people traveling in a group. Perhaps they just get FRS radios.

Apparently people rat themselves out via social media pretty frequently. You'd think they'd know better after a few of them got busted, but they keep doing it.

I can see where it might work well for that purpose.

I probably will just out of curiosity.

That wouldn't explain why I got the expected output with the other antennas and more than the advertised power with the Nagoya.

I have the QYT KT-7900D which is a tri-band (140/220/440) rebranded version of the DB25 and the BTech UV-25X4 and it's fully supported by CHIRP. It's not a bad radio for the price, but it has some behaviors I don't like. If you're monitoring more than one channel, whenever any monitored channel breaks squelch, the radio goes to that channel and there's no way to leave it until the squelch closes. I don't care much for that. Also, it scans very slowly; so slowly that it's nearly useless. I ended up programming only channels in the 1.25 meter band and using it as a dedicated 1.25m radio. In that role, it works just fine, since only monitoring channels in one band means I get less unwanted traffic "trapping" me on a channel. As a dedicated GMRS radio, it should also work just fine. You'll probably want to only monitor no more than two channels at a time, though; the quad-watch can get overwhelming. If I were using it for GMRS (which may happen), I'd monitor a couple of my favorite repeaters and leave the other two channels set to something I might want to switch to but not continuously monitor. It does output the advertised 25 watts, which is refreshing. The receive audio isn't the best, and I have to turn the volume pretty high to understand it. Transmit audio seems to be just fine, though. It receives about as well as my other radios. Overall, it's a decent radio for the price. For $90, I really can't complain. Interestingly, it's $11 cheaper than the DB25-G, at least on Amazon, although Radioddity offers some bundles which are less expensive than buying the QYT and accessories separately.