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Dash Cam fitted to rear roofline - blocks radio

Posted: Thu Jul 22, 2021 2:14 pm
by goobs
I have a dash cam velcro'd to the rear of the roof and have fed the power cable to the boot lighter socket.

The power cable is tucked into the rubber boot seal.

Whenever I power on the dash cam the FM and DAB radio signal is severely degraded.

I tried letting the power cable hang loose but the dash cam just wipes out radio signals.

It is an old one I have used in two Golfs and a Honda Civic for donkeys years without issue - model A118c.

Any one any ideas ?

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Thu Jul 22, 2021 3:24 pm
by Pragmatix55
You need to fit a ferrit core on the power cables

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Thu Jul 22, 2021 4:06 pm
by CJJE
I believe the heated rear window elements may be used as the radio aerial, with the shark's fin thingy being the GPS and mobile phone aerial??

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Thu Jul 22, 2021 11:42 pm
by Richiej64
Agreed. Had same issue fit a ferrit core on the dash cam cable about 4-6inches from cam and it’s sorted. Did on mine anyway. Usually come with kit or hardwire kit for £20 ish

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Fri Jul 23, 2021 8:42 am
by goobs
Thanks for the advice. I'll dig a core out tonight, or rob it from and old power adapter ;)

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Thu Jul 29, 2021 3:17 pm
by goobs
Well I fitted ferrite clamp and yes it is better but still lose signal when out in the sticks. Soon as I unplug the dashcam the radio is fine.
I might try looping the power cable through the core or fit 2 or 3 see what happens!

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Mon Aug 02, 2021 10:02 am
by goobs
Still no joy, even with extra ferrite cores.

I read somewhere that some dash cams use a 12 to 5v converter and that generates loads of noise, sometimes too much even for ferrite cores.

So for now I've removed the old A118 dash cam from the rear and am looking for a replacement.

Ideally I'd like a new 60fps front cam and a new rear 30fps. My current Thinkware F50 failed to record a number plate of an oncoming vehicle scrape, other than a blur, so has failed me when I actually needed footage from it.

Has anyone any suggestions for a DAB interference free front/rear dash cam setup with 60fps front and also hardwired proper parking mode that turns off at 12 volts please ?

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Mon Aug 02, 2021 11:17 am
by Routemaster1
If the camera is connected via a usb lead, surely it will be 5 volts. If it plugs directly into a 12V power supply, then presumably it will operate on 12V or there will be an internal converter.

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Mon Aug 02, 2021 12:35 pm
by sanqhar
Re ferrite cores.

Sometimes they are looped through then back and looped through a second time.

tom

Re: Dash Cam fitted to rear roofline - blocks radio

Posted: Tue Aug 03, 2021 8:48 am
by Milfmog
I use a Thinkware F770 front and rear system. Works perfectly with no radio interference.


Ian.