white noise on scanner Uniden UBC785XLT

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white noise on scanner Uniden UBC785XLT

Postby Belfast Stephen » Sun Oct 15, 2017 9:34 am

Hello i am new to the from so if this is posted in the wrong bit then sorry

i have switched on my Uniden UBC785XLT this afternoon. all i seem to be getting is white noise unless someone is talking on 1 of the stored frequencies and it the same in scan mode it has never happened before it was working fine this morning. it is if the squelch is stuck on
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Re: white noise on scanner Uniden UBC785XLT

Postby Alfie » Sun Oct 15, 2017 9:54 am

Have you checked the squelch level ?

is it only stopping on one channel ?
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Re: white noise on scanner Uniden UBC785XLT

Postby m0lsx » Sun Oct 15, 2017 11:55 am

all i seem to be getting is white noise unless someone is talking on 1 of the stored frequencies


That is exactly how it should be.
White noise, background hiss is perfectly normal.
How new are you to radio? As what should happen is that you turn your Squelch fully left (off) & then turn it right until it cuts out that bacground noise.
The squelch should be set so that it is as far to the left (off) so that weak signals can be herd & as far to the right so that the radio scans without constantly stopping on that background noise.
The problem comes when you have high levels of noise on a few channels. Do you turn the squelch up further & loose some active channels or do you constantly keep manually skipping a noisy channel?
In todays world it is sadly common to have very high levels of noise across the spectrum or on certain frequencies due to electrical items not being made to a decent & European legal standard.
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Re: white noise on scanner Uniden UBC785XLT

Postby Belfast Stephen » Sun Oct 15, 2017 12:51 pm

Alfie wrote:Have you checked the squelch level ? it doesn't matter where i turn the squelch its if it is stuck on

is it only stopping on one channel ?
it is happening on every channel
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Re: white noise on scanner Uniden UBC785XLT

Postby Belfast Stephen » Sun Oct 15, 2017 12:54 pm

m0lsx wrote:
all i seem to be getting is white noise unless someone is talking on 1 of the stored frequencies


That is exactly how it should be.
White noise, background hiss is perfectly normal.
How new are you to radio? As what should happen is that you turn your Squelch fully left (off) & then turn it right until it cuts out that bacground noise.
The squelch should be set so that it is as far to the left (off) so that weak signals can be herd & as far to the right so that the radio scans without constantly stopping on that background noise.
The problem comes when you have high levels of noise on a few channels. Do you turn the squelch up further & loose some active channels or do you constantly keep manually skipping a noisy channel?
In todays world it is sadly common to have very high levels of noise across the spectrum or on certain frequencies due to electrical items not being made to a decent & European legal standard.


i have had the scanner about 7 years and it has never happened before
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Re: white noise on scanner Uniden UBC785XLT

Postby Belfast Stephen » Sun Oct 15, 2017 12:56 pm

i have a video of what is happening is the any way to post it on here
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Re: white noise on scanner Uniden UBC785XLT

Postby m0lsx » Sun Oct 15, 2017 1:33 pm

Belfast Stephen wrote:i have had the scanner about 7 years and it has never happened before


Then it sounds like you have something local to you that is producing electrical noise. It could be something in your own home or close to it.
To post a video, you first need for it to be online. Then you link to it here. The same with photo's.
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Re: white noise on scanner Uniden UBC785XLT

Postby Belfast Stephen » Sun Oct 15, 2017 2:42 pm

i have tried it different spots round the house and still them same i have had the base scanner in the same spot for the last 6 years and no problems
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Re: white noise on scanner Uniden UBC785XLT

Postby m0lsx » Sun Oct 15, 2017 4:01 pm

It could be someone has a new TV, some new LED light bulbs. They have a new router for their internet, a new smart electric meter or a new solar power system, all of which are known sources of interference. It could be a fault that has just cropped up. It could be any number of things.
What you need to do is try & find out if it's getting in through your electrical system or if it's radiated.
I use filtered mains leads on my radios, which limits the damage done by mains borne interference.
If your problem is radiated, then knowing what frequencies it covers & if it's 24/7 is a starting point.
Take a look at UK QRM for some idea of what you are up against.
https://www.ukqrm.org.uk/

They also have a forum.
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Re: white noise on scanner Uniden UBC785XLT

Postby Belfast Stephen » Sun Oct 15, 2017 8:40 pm

it has been very worm air the last few days over northern Ireland with bad weather on the way i hoping its weather causing the problem and if not the weather then it will be back to the drawing board
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