SteveShannon

But I find no mention of it in any announcements on the FCC website. Damned bureaucrats.

Happy New Year, Adam! Don’t worry about it. You’re a decent man. I have no resolutions. Not that I do things right already, just that I’m not going to change.

No apologies necessary. At least you figured it out. Ferrites on the power leads might help. Keep your ground wire short; go to a chassis ground nearest the transceiver. The positive line should run all the way back to the battery or fuse box near the battery.

What has changed?

I would drive somewhere else and see if people still report the whine. Do you have a different radio you can swap in?

Did your neighbors have any fancy Christmas lights on at the time? I’m more inclined to believe it’s something external since your engine is off at the time. Does your antenna require a ground plane? I’m not certain the corner of your roof rack would substitute for one.

I think you’re asking about testing the resistance between the center pin and the shield on the SO-239 jack on the rear of the radio. Testing it with a multimeter imposes DC which might give some continuity reading which might change over time. There are inductors, which appear as shorts at DC and there are capacitors which will appear to be continuous while they charge, but then block DC. A continuity test there isn’t necessarily indicative of anything. Are you parked near an electrical transmission line or underneath lit streetlights or other electrical equipment when transmitting?

That’s actually kind of clever, but annoying to everyone else, for possibly a $12 radio.

Then it is the charger (I suspect). Those little inexpensive chargers are very often terrible RF generators. Here’s a further confirmation: take the battery off of the radio and put it into the charger without the radio. Does it still create noise?

The charger. Is the radio turned off during the interference?

Based on the scope described in the original post I understand that this would be strictly emergency, which implies short duration. People wouldn’t be chatting on it. If it were me I’d do an APRS beacon with a canned message rather than a repeater, but it could simply be a simplex repeater.

I’d never use a battery that big for a 100 mw repeater intended to fly in a balloon for a short time in emergency situations. I’d use something like an 1800 mah battery.

Replace the Tone Squelch column with the frequency shown in the “input tone” on the MyGMRS page and change mode from NFM to wide and you should be good.

Butte, no repeater yet but a guy just bought. Retevis 97s

I could see that being done using hardware similar to a DMR hotspot. It would be very low power and capable of running for a long time on a lightweight LiFePO4 battery. It would be fun to try, anyway.

Contact the Chirp developer. For whatever reason Chirp is expecting something different than it is receiving. That’s not the kiss of death while reading, but if you turn around and write something to memory that doesn’t match you could end up with unexpected results, including possibly bricking your radio. Or just use the factory software in Parallels.

But does the official copy of your license? That’s what matters. Edited to add: I just looked up my license and under waivers and conditions it no longer mentions Line A or C.

That link I posted has both pieces, for the antenna and the radio, for both genders combinations. But I’ll point out just once that most people don’t add an adapter to the very cheap antennas Baofeng attaches to their radios. They buy the BNC adapter so they can use a better quality antenna that comes with a BNC connector.

Make sure you’re on the top level (mygmrs.com) rather than at the forums level (forums.mygmrs.com)

Go to your account and look at Subscriptions.

I think it is, but order it and see.

1. It's needed for transmit. You can always leave the tone for receive blank. 2. You might hear a courtesy beep from the repeater right after you cease transmitting, or even an occasional ID. The best way is to ask someone for a radio check. Or give your second radio to someone and have them go a little ways away and listen. 3. Your presumption is correct. Welcome to the forum.

https://a.co/d/7H0HN6M

You’re right.

Excuse me? You mean St. Steven’s Day?