[Hammarlund] Hammarlund chokes in SP-600

[kirklandb at sympatico.ca]

you have to break the solder seal around the base.

I would suggest stripping the paint, this use a propane touch to heat things up enough

 to melt the tar and extract the core.  you will need to anchor the case while you pull up on the core.



I had to real seal one once. I needed the propane touch to get enough heat to melt the solder however,

it also caused the tar to melt and bubble up. I fixed that by immersing the body of the choke in water but

 left the bottom above water. The water kept the tar cool enough while I soldered it back together.



bill, ve3jhu 

> From: kgordon2006 at verizon.net
> To: David_Wise at Phoenix.com; hammarlund at mailman.qth.net
> Date: Wed, 10 Mar 2010 09:31:23 -0800
> Subject: Re: [Hammarlund] Hammarlund chokes in SP-600
> 
> On 10 Mar 2010 at 9:06, David Wise wrote:
> 
> > Has anyone tried de-potting one?  (Then add insulation.)
> 
> Shouldn't be too difficult, if one can talk the wife into using 
> her stove for a while...and if she doesn't mind the smell of 
> melting tar, or whatever is in there.
> 
> I have a -JX1 that I will restore some time after I retire (April 
> 30). If mine has one of those iffy chokes, I'll try to re-pot it. 
> If that takes place, I'll report back here.
> 
> Ken W7EKB
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