Outer Limits 4x4 Board

Could you run 2x UHF Radios in one truck, or would they cause issues with each other with feedback etc??

Using different channels gets over the feedback issues if you are talking about 477 UHF. You wil only get feedback if both radios are on the same channel, maybe a bit of "bleed through" on one channnel either side.

Antennas would ideally need to be as far away from each other as possible, but an absolute minimum of 1m.

Is this a means of monitoring more than 1 channel at once? eg ch40 and a club convoy channel when on the highway?

With my ICOM 400 i can set up multiple monitoring channels and when it detects transmission, it flicks over etc... This could be easier than trying to run 2 radios... or maybe get a handheld, so u can use it out of the truck aswell for recoveries/spotting.

--> 2c

+dj_hansen+ wrote:Is this a means of monitoring more than 1 channel at once? eg ch40 and a club convoy channel when on the highway?

With my ICOM 400 i can set up multiple monitoring channels and when it detects transmission, it flicks over etc... This could be easier than trying to run 2 radios... or maybe get a handheld, so u can use it out of the truck aswell for recoveries/spotting.

--> 2c

Yea, thinking this cause I have the 3800 nd the dashpod I bought has a 3200 in it and a 27mhz.

wanted to piss the 27 off and put something in its place.

leave one on convoy channel, and the other on 40 probably

really just tryin to catch up with woopy and his 6-9 radios

I have two Icom UHF radios in my Hilux. One antenna is on the bullbar and the other on the ute frame. I get a little de-sensing (caused when radios/antennas are physically close to each other and one radio transmtting stops the other radio from receiving weak signals), but overall it isn't too bad.
Of course, if you transmit on the same channel as the other is receiving you will get audio feedback....

michaelcarey wrote:I have two Icom UHF radios in my Hilux. One antenna is on the bullbar and the other on the ute frame. I get a little de-sensing (caused when radios/antennas are physically close to each other and one radio transmtting stops the other radio from receiving weak signals), but overall it isn't too bad.
Of course, if you transmit on the same channel as the other is receiving you will get audio feedback....

kewl so if the ariels are sepearted you should be fine..

but what about the radios - could you run the 2 in 1 dashpod?

bogged wrote:

michaelcarey wrote:I have two Icom UHF radios in my Hilux. One antenna is on the bullbar and the other on the ute frame. I get a little de-sensing (caused when radios/antennas are physically close to each other and one radio transmtting stops the other radio from receiving weak signals), but overall it isn't too bad.
Of course, if you transmit on the same channel as the other is receiving you will get audio feedback....

kewl so if the ariels are sepearted you should be fine..

but what about the radios - could you run the 2 in 1 dashpod?

You can run the radios physically close together (one on top of the other), it is only the antennas that need to be seperate (by at least 1m). Try to route the antenna cables seperately as far as possible coming out the back of the radios, to minimize crosstalk and "desensitising".

I have three UHF radios in my truck, one 5w Uniden dash-mounted and 2 0.3W/1W waterproof portable handhelds mounted in rechargers connected to a "spotlight ring main". The handhelds are handy for the co-pilot when sussing out obstacles up ahead or when directing winching operations. Incidentally during winching operations the 5W won't work properly because of the voltage drop when the winch is under load. So I need the second handheld for these situations and also when I want to operate on a second, personal, channel when in convoy. I have never had serious interference between any of them.

Oh, and I still have the old VHF CB too.

DAMKIA wrote:You can run the radios physically close together (one on top of the other), it is only the antennas that need to be seperate (by at least 1m). Try to route the antenna cables seperately as far as possible coming out the back of the radios, to minimize crosstalk and "desensitising".

1 ariel on drivers, one on passengers... run wiring on each side of engine to the dashpod.. Hmmmm busy night tomorrow

sorry bout kinda hijacking thread but is anyone heard of commex radios

Matt_88 wrote:sorry bout kinda hijacking thread but is anyone heard of commex radios

Yes, I remember working on a Commex radio some time ago. It was a Uniden/Pearce Simpson clone, pretty crappy construction but seemed to work OK. I wouldn't touch one these days with the likes of the Icom and GME radios that are available.

An in car and a cheap handheld uhf are pretty handy to have, good also if you are in a convoy and someone doesnt have a radio or for spotting tracks etc.