Constant beating Pulse

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livewire
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Constant beating Pulse

Post by livewire »

Hi, I have just setup a simple home rig after 40 years away from CB Radio.

I have a DV27 mag mounted on top of a 40 foot container, using an old Communicator 27/81 and also a more recent Midland 38 27/97.

On receive there is a constant beating pulse about one beat a second, this is across all channels on both radios. Does anyone have any idea what this might be from? Also I have not managed to pickup any activity from other users.

I'm based in Stone Staffs.

Cheers
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ch25
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Re: Constant beating Pulse

Post by ch25 »

Breakers down. Radio from battery.
Is it gone?
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livewire
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Re: Constant beating Pulse

Post by livewire »

No, the battery supply is good its the same with both CB radios.
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Buick Mackane
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Re: Constant beating Pulse

Post by Buick Mackane »

There's a lot more electrical noise these days compared to when you last used radio 40 years ago. As above run your radio from a battery then switch off the power at the mains, if your lucky the noise will be coming from your own house.
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ch25
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Re: Constant beating Pulse

Post by ch25 »

livewire wrote: 03 Jan 2023, 11:04 No, the battery supply is good its the same with both CB radios.
Lucky you. It comes from your house.
So disconnect electrical equipment in your house one by one till you find what makes that noise.
Let us know what was that.
Chris
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Buick Mackane
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Re: Constant beating Pulse

Post by Buick Mackane »

livewire wrote: 03 Jan 2023, 10:22

I have a DV27 mag mounted on top of a 40 foot container,
Cheers
I'd like to know more about the 40 foot container :shock:
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LondonCbRadio
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Re: Constant beating Pulse

Post by LondonCbRadio »

If you can't get rid of the noise try PMR446 there won't be any noise of that band.
livewire
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Re: Constant beating Pulse

Post by livewire »

I did think about electrical items at home so I will try isolating them this evening.
Hair Bear
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Re: Constant beating Pulse

Post by Hair Bear »

Are you urban or rural? First thought for a 1hz pulse would be an electric fencer for farm animal control that is sparking to earth somewhere.
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The Collector
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Re: Constant beating Pulse

Post by The Collector »

As above, run a radio off a battery then turn mains switch off and see if it continues. If it does, it's 99% likely it's not on your property.

40 years ago I'd have said possible Russian "Woodpecker" over-the-horizon radar ;)
ChubbyChops
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Re: Constant beating Pulse

Post by ChubbyChops »

Powerline interference mostly caused by cheap Chinese tat and internet cables.
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NightProwler
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Re: Constant beating Pulse

Post by NightProwler »

40 foot container? :wtf:
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paulears
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Re: Constant beating Pulse

Post by paulears »

Check the wall-wart type poser supplies and especially check the one on your internet. If you are using copper not fibre - the interference can be carried on the overhead lines. Other culprits are smart meters!
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