[Elecraft] K2: T6 bifilar winding

Don Wilhelm w3fpr at embarqmail.com
Wed Feb 10 17:54:59 EST 2010


LS,

The twisting is to keep the wires in close proximity to one another, so 
it the twist is not critical.

73,
Don W3FPR

lstavenhagen wrote:
> Hi all,
>
> Quick question about the bifilar windings on the bifilar transformers like
> T6. How critical is the twist in the two wires? When I did T6, I was unable
> to get a terribly consistent winding of the two wires together. Build manual
> says they should cross over about every 1/2", but some parts of the wires
> ended up a little tighter than that, others less. On some of the windings
> when I wound the core, they more or less didn't pass over each other at all
> for one or two windings (tho they were adjacent). 
>
> I'm assuming this is probably not super critical, but just curious.
>
> I'm almost at the second part where you fire it up on 40 meters. If not this
> evening probably tomorrow evening I'll be there..... 
>
> LS
>   
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