[Elecraft] Coil winding novice

John R. Lonigro johnlon at sbcglobal.net
Fri Feb 9 13:59:02 EST 2007


Nick:
One problem I had winding coils was the first turn always was looser 
than the rest.  So I would intentionally wind an additional turn and 
then remove the first turn.  Just make sure you end up with the correct 
number of turns.

Also, after the coil is wound, before I try to strip the insulation from 
the ends, I do a fit check and trim the wires so they are only perhaps 
1/8" longer than need be.  I then remove the coil and know exactly where 
I need to remove the insulation.  If  you don't do that, you will end up 
spending lots of time stripping insulation from parts of the wire you 
are going to trim off anyway.  Once you think you've stripped off the 
insulation, do a resistance check before installing the coil.  After you 
install it, other components in the circuit might lead you to believe 
all is well when it isn't.

Good luck.  If you are careful, you should have no problems.

73's,

John AA0VE

Nick Henwood wrote:
> I am just starting on my K2 and feeling apprehensive about coil winding - never  having wound a toroidal coil.My inclination is to wind them myself rather than give way and buy a set. It all looks straightforward in the instruction manual. Would welcome encouragement or cautionary advice.
> 73 Nick G3RWF
>
>   


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