I think the first question is, did it do that before? If not, it may be 
failing and just be time to replace it which might fix the problem. Other 
wise, is the coax near it maybe you can reroute it? Can you hear it even if 
you disconnect the antenna? It could be simple as ferrite beads, or rapping 
the wires in aluminum foil, yes that works for some things I'm told the 
older actiontec routers used with Verizon fios that was the trick to stop 
their noise, if that wasn't a problem before, there's got to be a way to fix 
it.
----- Original Message ----- 
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, May 14, 2012 7:53 PM
Subject: Getting rid of hash caused by battery charging unit in RV


> Hi, all.
>
> I know we have discussed similar topics before, but I have an issue in my 
> RV
> that is now affecting my HF set-up big-time.
>
> Specifically, there is a built-in charging unit for the house battery that
> seems to be creating more and more interference on the HF frequencies. 
> The
> interference occurs when the charger is in either the "use" or "store" 
> mode.
> I know that the charger is causing the interference, since when I switch
> from "use" to "store
> ", the interference goes away for a few minutes, until the charger re-sets
> itself, after which time, it gradually returns.
>
> When we unplug the RV from the electrical service at our camp site, the
> interference disappears completely.
>
> As far as I know, since the charger is directly wired into the RV, there 
> is
> no way to turn it completely off.
>
> Does anyone have any simple remedies for me to try in order to get rid of,
> or at least lessen this interference.  It is so bad that it makes the
> 40-meter band unusable, which is why I was not on Saturday's round table.
> 20 meters isn't much better either, which is rather discouraging.
>
> 73 from Tom Behler: KB8TYJ