[Heath] SB receivers and in general ferrite coils

[Glen Zook]

Unfortunately, most of the time, when the core gets stuck, it is cracked and has to be completely removed and replaced with a new core.  You can use a "pick", or something really sharp but narrow, to gradually "flake" the material to the center so that it falls out.

Often, the crack in the core is very difficult to see, but it is there.
 
Glen, K9STH


Website:  http://k9sth.com


________________________________
 From: Patrick Tocornal <brookbank at triad.rr.com>
To: Heath at puck.nether.net 
Sent: Saturday, January 5, 2013 2:53 PM
Subject: [Heath] SB receivers and in general ferrite coils
 

 
Does anyone here knows how to loosen up the ferrite 
core in the antenna/plate/oscillator coils of these receivers, fortunately I 
have only one that is stuck, have the right tool but it wont budge, is the 3.5 
antenna coil and by the performance of this receiver it need adjusting like all 
the others. So far I have used heat (wife hair drier) and cold with a medical 
freezing spray can to no avail, is there some kind of penetrating lubricant that 
could be used without making it worst ????? Any help would 
appreciated.
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