[Hammarlund] Meltdown!

[Roy Morgan]

At 09:36 PM 6/2/03 -0500, you wrote:
>Question is, will the choke be reliable without a full load of tar inside?
>I can't see why not (in the hamshack environment) but would appreciate any
>comments on this.

Bob,

The thing depends on the tar for both heat conduction and insulation. You 
may have reduced amounts of both.

One failure of the SP-600 is leakage in the tar itself: the choke becomes 
leaky and puts an increasing load on the B+ supply.  The "fix" offered in a 
Hollow State news article some years ago to insulate the choke case from 
the chassis and run it that way is dangerous in my opinion.  Don't do that.

I suggest you extract the choke for surgery or replacement, and put in a 
substitute till you can locate a replacement.

Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
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