What is wrong with my UHF & how do I fix it?

[TPC]

You could also pop down to Cape Jaffa caravan park between 1st & 9th Jan and I could look at it there, then stick around and do a bit of sand driving.

[Cuppa]

Thanks. No I won’t be at Kris’ do but I’ll probably have a go at doing as you suggest after christmas & will come back here with my findings.

[Agronaught]

And a thought from left field... Do you have led lighting that comes on with the ignition?

[Cuppa]

Good thought but no LED lighting which comes on with ignition. Cabin light is LED, but is not the cause. I had one light in our old bus which made the radio impossible to listen to, but not so in the Patrol. If only it were that easy!

[Agronaught]

Bugger...

I had a dodgy LED in a recent build that caused noise on a number of bands from 50MHz up through 500MHz. Apparently there are some dodgy components out of China (?who knew?) which exhibit an some form of avalanche breakdown not typically associated with LED's. The LED's I've put in the front bar blinkers have a similar effect due to the ringer circuit used to manage the voltage through the light, turn on the indicator and the radio would drop squelch every time the indicator turned on.

I eventually moved the radio to the rear of the truck, much less in the way of electronics to cause issues. (remote head).

Cheers
J.

[the evil twin]

Bugger...

I had a dodgy LED in a recent build that caused noise on a number of bands from 50MHz up through 500MHz. Apparently there are some dodgy components out of China (?who knew?) which exhibit an some form of avalanche breakdown not typically associated with LED's. The LED's I've put in the front bar blinkers have a similar effect due to the ringer circuit used to manage the voltage through the light, turn on the indicator and the radio would drop squelch every time the indicator turned on.

I eventually moved the radio to the rear of the truck, much less in the way of electronics to cause issues. (remote head).

Cheers
J.

Betcha don't have a Babel Fish handy to translate that for ya Cuppa?

(Sorry Agro... totally agree but couldn't resist a smartarrs comment)

[threedogs]

Is the antenna coax one piece as in the only joins are at antenna and radio?

[Agronaught]

Betcha don't have a Babel Fish handy to translate that for ya Cuppa?

(Sorry Agro... totally agree but couldn't resist a smartarrs comment)

Lol.

I feel the same way with some of the mechanical suggestions on this list... Electronics I know, mechanics not so much

[Cuppa]

Betcha don't have a Babel Fish handy to translate that for ya Cuppa?

(Sorry Agro... totally agree but couldn't resist a smartarrs comment)

Babelfish tells me ‘Avalanche breakdown’ = Everything falls in a big heap”
‘Ringer circuit’ = Either a) the automotive equivalent of a household ‘ring main’, b) a series of campanologist powered alternators or c) something rodeo entrants entertain themselves with in the off season.

[mudnut]

Take your radio out and hook it up to a battery, an antenna and try it out. Use a knockometer on the unit and the cables. That way you can rule out an internal fault.