[AMRadio] transformer rattle - kill or cure?

AirRadio AirRadio at dsl.pipex.com
Wed Dec 23 12:32:07 EST 2009

No this is in a Drake R-4c, that is why it is a tad irritating, if it was in 
the '610 it would probably not notice so much, also I have spares for all of 
them. I have removed it and am going to leave it in a pot of varnish 
overnight, better not put it in the oven the Turkey might taste a bit odd on 
the 25th ;-) it will either make no difference or will sort it, all the 
laminations look tight and it is already varnished maybe there is a small 
looseness somewhere however the bobbin looks tight enough. it is 30 years 
old though maybe something has moved over time.

----- Original Message ----- 
From: "rbethman" <rbethman at comcast.net>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Wednesday, December 23, 2009 5:23 PM
Subject: Re: [AMRadio] transformer rattle - kill or cure?

> Max - Is this your BC-610E?
> If it is, I believe they use open frame transformers.  They are also
> difficult to get to.
> In that instance, I'd try to look at the "wedges" between the bobbin and
> the laminations.  Try to tighten them a hair.
> Bob - N0DGN
>>> On Wed, Dec 23, 2009 at 10:39 AM, AirRadio <AirRadio at dsl.pipex.com>
>>> wrote:
>>>> I have a mains transformer in my latest boatanchor, it is rattling
>>>> like mad, eventually goes away after an hour or so, I thought about
>>>> dropping it in a can of varnish, anyone cured one before, any luck or
>>>> waste of time?
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