LMTV Radio Antenna Question(s)

[Third From Texas]

I have the passenger side antenna mount with spring intact. I've encountered a number of antennas for sale that list a for "LMTV", but they list a wide range of vehicles and vary considerably.

1) Does anyone know the antenna designation that goes with our trucks (I guess assuming just the standard radio stack)?

I have a spare ICOM F121 (136–174 MHz) that most of my cars have installed that I'll drop into the truck.

2) Is there a particular antenna that might work or be modified to work at 136–174 MHz

I've got a link to a mod to convert a MX-6707 with AS-1729/VRC into a CB/marine band antenna.

So anyone have any pointers, antenna suggestions, or links?

 

[FullSpecial]

Just remember the mount is aluminum and there for no groundplane. Center of roof would be better.

 

[sigo]

I have the passenger side antenna mount with spring intact....
1) Does anyone know the antenna designation that goes with our trucks (I guess assuming just the standard radio stack)?

The most common standard antenna is an AS-3900. Another is an AS-3916. Your base is most likely for an AS-3900. Both are for SINCGARS radios, 30-88 MHz.

 

[Ronmar]

For Victor a 4265A would be appropriate, made by Shakespear. Surprisingly enough, the USCG actually put these on smallboats and patrol boats for a number of years. They did pretty well considering they were never designed for a marine environment.

http://shakespeare-ce.com/military/product/4265a-center-fed-vhfuhf-antenna/

 

[grobster]

Would this Shakespeare antenna plug and play with this mount and civilian radio?

Sent from my iPhone using Tapatalk Pro

 

[Third From Texas]

I'll have to get up there later and measure the mount, but these are the dimensions for the Shakespeare 4265A Center-Fed VHF/UHF Antenna

 

[Ronmar]

Yea, I have only seen the LMTV mounts in pictures. Looking at the Pic that Grobster put up, it may fit without modification... Since they share comms packages across different platforms it would make sense to have had similar antenna bases specced for as many antennas as possible.

 

[Third From Texas]

Yea, I have only seen the LMTV mounts in pictures. Looking at the Pic that Grobster put up, it may fit without modification... Since they share comms packages across different platforms it would make sense to have had similar antenna bases specced for as many antennas as possible.

Yep, that's the dimensions on my base so I assume it's standardized for the size.

 

[Awesomeness]

The military antennas are all fairly long for common HAM/FRS/GMRS/MURS/etc. frequencies, so not very practical to use. When you use them for wavelengths outside what they were designed for they don't generate a nice "donut" energy radiation pattern, and instead create lobes and nulls at various angles. That will cause you to get strange RX/TX behavior (you will be able to talk to someone far away where one of the lobes of energy is pointing, and at the same time have difficulty talking to someone right next to you who is sitting in one of the nulls).

Antenna "tuners" will not really solve this problem, as they only adjust the impedance. The only real way to fix it is to cut it to ideal length (lambda/4).

https://en.wikipedia.org/wiki/Null_(radio)

 

[Crapgame]

The Harris

RF-3183-AT013 30-512MHz covers part of the designated Ham bands.​

[FONT=Verdana,Arial,Tahoma,Calibri,Geneva,sans-serif]https://www.ebay.com/itm/233182435620?ul_noapp=true[/FONT]

 

[Ronmar]

The Harris

RF-3183-AT013 30-512MHz covers part of the designated Ham bands.​

https://www.ebay.com/itm/233182435620?ul_noapp=true

Yea, just watch the overpasses