[Heathkit] coils for SB610 and SB620

[Tom NØJMY - AAR7FV]

Mike, in case you want to try your hand at rolling your own, go to my 
website for the spec's and blueprints of all HO-13 and SB-620 "i.f." 
coils.  The ones you need are:  www.hayseedhamfest.com/13spec.jpg , 
www.hayseedhamfest.com/13note.jpg and www.hayseedhamfest.com/13fig3.jpg .

While your at it, check out the home page and tell me what you think.

BTW, the only difference between the 620's 40-775 and the HO-13's 40-588 
is that the 40-588 has three terminals, where the 40-775 has a fourth 
"dummy" terminal that wasn't connected to the coil.  Offhand, I don't 
know if the "dummy" lug was used for something such as a tie-point 
terminal for something on the SB-620, or if it was just there because 
that's the way the vendor made them.  I should open up a 620 and look, I 
guess. 

Better yet, since you've apparently got yours open already, how about 
you look and tell me?

73 es best dx,
Tom

Michael Tortorella wrote:
> Hello to the list,
> I am setting up a SB620 for 455 kHz and need the 40-775 coil.  Can trade a
> 40-807 or 40-748 (this last is from the SB610).  Or maybe other advice on
> winding new coil, etc.
> BTW, somewhere in my researches I read that the 40-746 SB-610 col for 455
> kHz is the same as a Miller 12-C2.  Hope this helps someone.
> Thanks and 73
> Mike W2IY
>
>
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