[600MRG] Litz wire, anyone??

[John Andrews]

Dave,

Bill Ashlock's verdict on Litz as a tree-supported loop conductor was 
pretty grim. Worked fantastically early-on, but over time, way too many 
individual strands parted company, and performance went down the tubes. 
I think he ran the wire inside garden hose for protection.

On the other hand, his favorite conductor was 10 foot lengths of copper 
tubing, with the joints silver-soldered. He would just haul it up there, 
assembling as he went, and letting the stuff bend. Ugly as heck, and not 
real cheap, but the darn stuff worked.

John, W1TAG

On 3/1/2017 5:54 PM, Dave Riley wrote:
> My imagination is running in overdrive right now.
> I have a hunk of Litz wire which contains 7 individual twists of 96
> pieces each of .010" diameter copper insulated wire which in this case
> works out to .0314 circular mils times 672 strands, all in parallel...
> This comes out to be the equivalent of a single copper conductor of
> almost 7" diameter...
> Could this be??
>
> Litz wire operating at 472khz calls for individual strands of #43 copper
> insulated..
> This piece at 10 thousandths single strand is more suited for 10 khz. or
> so...
>
> Do I dare a try of 500' of this stuff in a transmit loop??
>
> When should I wake up??   The bandwidth is about 1.6 khz. and said to be
> 98% eff. at this length...
>
> Gonna have to sharpen the slip stick...
>
> This all came about as I was thinking of the inefficient vertical with
> 3db of it's RF going directly to ground...
>
> Lost, DaveR /17
>
>
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