[HBR] WTB coil forms

[Hopperdhh at aol.com]

Hi Bill,
 
I know this was addressed to Breck, but I'd like to throw in my $.02.
 
I have a Boonton 260-A Q-Meter and have measured coils before and after  
spraying with a pretty heavy coat of Clear Krylon and could measure no  
difference.  This was on coils with Q of about 200, so I'd say its fine to  use.  
It has very little solids, so it take quite a heavy coat to  leave much 
behind.  In my case it was on paper/cardboard formers, and  it held the wire 
nicely as well as added some strength to the formers.  It  also dries quickly 
which is nice.
 
Its always a good idea to measure the Q of any coil you wind.  A  Q-Meter 
is a great piece of test gear.
 
Dan K9WEK
 
 
 
In a message dated 12/30/2013 8:03:30 P.M. Eastern Standard Time,  
w2dgb at ptd.net writes:

Breck,

Many thanks for re-presenting your section on winding  HBR coils.  There is 
a 
wealth of information here and it will  certainly make life easier for 
those 
contemplating taking on the  project.  I know that I have number of HBR 
coils 
to wind, and I have  been putting it off.  Reading this material again, as 
upgraded, has  given me a bit of a push.

One question:  With time the turns  sometimes loosen as the Cu wire 
stretches 
and expands and contracts.   I have been wondering what you recommend to 
keep 
the turns in place after  winding.  I know Crosby used Duco or some such 
cement in ribbons down  the coil windings, but I am considering giving the 
whole coil a spritz of  Krylon Clear.  Thoughts?

Happy New Year, Breck, and thanks  again.

73,  Bill   W2DGB