Topband: Ground loop isolator that passes DC

[Richard Thorne]

I 'think' what Chuck is trying to do is install  a lightening protector 
at his coax entrance panel.

The problem with lightening protectors is the blocking of DC and you 
can't send voltage to the switch, pre-amp or what ever your trying to 
power over the coax.

My solution, good or bad, was to install a box outside my shack that 
includes a 12v power supply and the bias T.  I inserted the bias-t on 
the antenna side of my lightening protectors.  Inside the box I have an 
aluminum plate which is grounded to my system ground.  If I can I'll 
post a picture as it shows how items are attached to the aluminum plate.

Rich - N5ZC

On 12/3/2021 2:32 PM, Chuck Hutton wrote:
> Hi -
>
> Many years ago I saw some ground loop isolators that pass DC.
>
> That is exactly what I need so that power can be sent over coax feeds to  preamp at the antenna.
>
>   I cant find anything on eBay that mentions passing DC in an isolator. None of the isolators I have will pass DC.
>
> Does anyone know an isolator that passes DC? I would like to avoid building one.
>
>
> Chuck
>
>
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