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Old 29-01-2022, 03:23   #1
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Join Date: Sep 2016
Posts: 30
Garmin VHF Handset help

Hi.
We have a garmin GHS20 wireless VHF handset at the helm. This has a charging cradle; which I don’t really think is intended to be outdoors, as it has failed.
There are 2 contact pads onto which the handset slots, there is no voltage there.
I checked incoming supply and there is certainly 12V arriving to the cradle.
The electronics around the back of the cradle are all potted, I can see the top of 2 capacitors and then 2 wires run down to the charging contact pads.

I wondered if anyone knew whether the charging control for the GHS20 is done within the handset, with the cradle just stepping down voltage to some unknown level, or whether the potted electronics in the back of the charger also control charge etc?

if the former,I’d modify the cradle so the sensitive electronics are inside the helm-pod. I can’t however find any info online, even about what voltage I should expect on the charging contact pads.
Any gurus out there?
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