Borage257

Has anyone tried using a mic cable extension with this radio? I have a co-worker who would like the radio tucked away with only an extension port showing.

Ducting is pretty awesome here is another thread about it

It might, I recommend mobiles because you can do cool stuff with them like hammo cans, base stations etc. if you get a mobile, DB20G, RT95 are good choices for 25w radios You’ll get more range from adding elevation to your antenna.

Running DB20G in an ammocan build. In its base station use, it feeds a tram1480. In its mobile mode, a UT-72G. looking to up grade to something better, not sure what tho. would like to get some Hytera UHF HTs

What you are experiencing is tropospheric ducting. It’s a wonderful thing, made a 92 mile confirmed DX with it earlier this year on simplex. Here’s a forecast map: https://www.dxinfocentre.com/tropo.html And explanation https://www.dxinfocentre.com/propagation/hti.htm https://www.dxinfocentre.com/propagation/tr-modes.htm

Is there a distance (maybe function of wavelength) the gap between the two conductive boxes? Could this area be filled with foam insulation?

I’m much more concerned with non-emp power outages. Our local region has enjoyed record highs and several storm related power outages this year. Having robust power backups on individual radios (ht/mobile/base) as well as local repeaters is paramount. IMHO grid down scenarios are more likely to happen from neglect, accidents, and non-emp terroristic acts than nation state or wide area emp strikes. I hope I’m right. “Grid down, power up” is an interesting and somewhat sobering discussion on the state of the grid

You need to make sure you get good bonding and seal between the lid and the body. I’ve read you also want some sort of insulator to keep things from touching the metal sides. Foam, plastic (hdpe cutting boards?) etc

Apparently emi gasket works. You’d have to take a wire wheel to the lip and inside of the seal are then apply the emi gasket.

@marcspaz Any word on what radio he was using? And what indicators other than this story are you seeing the FCC is starting to swing back on/to enforcement on gmrs?

Btech has an aprs cable for the Kenwood connector radios. I find Andflmsg has better capabilities

Would take off angles have something to do with elevation changes? Can you “overshoot” another radio/repeater?

Have you tried tilting the antenna towards the desired repeater? No much, just a little.

I expect keeping the wires at non-resonant lengths and adding lots of ferrite beads would help. I wonder if putting each radio in its own metal enclosure (30cal ammocan?) would help.

I’m interested in this. How does the receiver desensitize it’s self if you are using a duplexer?

If you only want to talk to only a few repeaters or contacts in one direction, a small 3 element yagi is good. TWAYRDIO Yagi Antenna UHF 400-470Mhz,High Gain Outdoor GMRS Vertical Base Antenna,7dBi Receiver Directional Yagi for Ham Radio,Repeater System,433mhz Device,Fm Scanner https://a.co/d/fNLP4iX

Tram1480 works good too

Looks great iOS!

I like the slim line of this radio, but would like to know if it is based on and if it comes in a Dual band configuration like the BTech20G

That means youll have to do the unlock on it. Press and hold the V/M button while turning it on. Then use the Up/ Down arrows to select the Frequency sets. Youll loose all you data, so save all that before. When you choose you new band set, be sure to select the same one in the programming software.

Might need to “open” the radio frequency range. GMRS mode may not allow power changes due to the power restrictions on the non repeater channels

Does anyone know of any hand mics compatible with the AT779UV/DB20G/RA25?

If you stick to channels 1-22 you should be fine with out a license. Your license will take a few days to a week to come in. Now that you have it you can get some nicer radios and use repeaters.

Yes you can. Some models require a bit of digging.

No problem, I have them sitting in my cart atm. To retain them better, with the screw removed put a small dab of silicone or rtv in the pin side of the screw hole. Use a tooth pick to poke a small hole in the rtv as it dries for the screw. If you need you could also use a dremel to slot the top of the screw for easier installs.