handheld radio

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Re: handheld radio

Postby m0lsx » Sat Nov 05, 2016 4:08 pm

tegsy1 wrote: When I tried the magmount the noise was exactly the same so its got to be something in the cab itself.


Not necessarily. It could be generating airborne hash. Drive past a bus & listen to what happens. Drive past some offices & listen to what happens.
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Re: handheld radio

Postby tegsy1 » Sat Nov 05, 2016 4:09 pm

Thanks alan.
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Re: handheld radio

Postby G4RMT » Sat Nov 05, 2016 8:48 pm

Stick the rubber duck back on, and wander around the cab and outside. If you can hear the noise everywhere, then remove the aerial and then wave the radio around inside until it's close enough to the noise source to make the aerial unimportant. The actual sound of the noise could help us no end.
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Re: handheld radio

Postby tegsy1 » Sun Nov 06, 2016 3:41 pm

thanks G4MRT I will try that and report back
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Re: handheld radio

Postby tegsy1 » Wed Nov 09, 2016 7:21 am

Hi All, well I carried out the check as advised and could not really pick up any noise from the cab, I changed the boafeng for a ubc 125 xlt and to be honest the noise is very minimal now but I think the connection on the magmount is faulty. I will be fixing that today. Thanks to all for the help and knowledge. :smiles:
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Re: handheld radio

Postby G4RMT » Wed Nov 09, 2016 8:30 am

I suspect we cannot go further now until we hear a bit of the noise? We might all have a different idea of what your problem actually is?
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Re: handheld radio

Postby m0lsx » Wed Nov 09, 2016 10:47 am

tegsy1 wrote: I changed the boafeng for a ubc 125 xlt and to be honest the noise is very minimal now


Have you listened in AM? As normally electrical noise is louder & clearer in AM than FM. With the scanner you have the option of Airband which gives you AM, unlike with the FM only transceiver.
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Re: handheld radio

Postby tegsy1 » Sun Nov 13, 2016 11:09 pm

Thanks to all for the good advice,the noise has returned so I am giving up,I will just use the handheld when I am stationary. :thumbup:
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Re: handheld radio

Postby G4RMT » Mon Nov 14, 2016 9:23 am

It's critical that we can hear this to diagnose it. Words are rarely any use for sound. For example, one crackle a friend described turned out to be instantly identifiable and therefore curable.

If I have understood properly, when the engine is running you get some kind of interference, or is it when the ignition is on, but it is evident inside and outside the vehicle on two separate and different aerials, and it does not matter if the radio is physically and electrically connected to e vehicle, or working totally independently on its own battery power. We quite like mysteries, but it really is like describing a colour without referring to another one - we all have a different idea in our heads. It is possible that your vehicle computer is putting out loads of hash, it's possible there is a physical problem with the ignition. Coil packs, for example, have suppression built into them but if you have a diesel this can't happen. Do you have a 12v to 240v inverter on board and connected? These can oscillate sometimes. Interference needs accuracy and repeatability to solve. If your vehicle has a fault it would be better to fix it, rather than give up. How about a clip with your phone and slap it on YouTube and give us the link so we could see and hear, and maybe at the very least, cross off some things it cannot be?
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Re: handheld radio

Postby m0lsx » Mon Nov 14, 2016 1:04 pm

G4RMT wrote: We quite like mysteries, but it really is like describing a colour without referring to another one - we all have a different idea in our heads.



We have the following options of Font colour, as an example.

Red

Red

Red


The top is FF0000, the middle FF4040& the bottom FF0040. They all look similar, but they are different.
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