[Amps] WLW 500 kW transmitter

[Peter Voelpel]

I do agree, 

At present I am in the process of refurbishing a russian military autotune
amp 1,5-26MHz with GU78b.
I just started with cleaning, but I already ha a look at the output network
and that contains two pancake coils as you described with a static shield in
between. So it must have worked like that in the past as well.
The coils are exactly the same and wound of 4x6mm square copper wire.

73
Peter

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] 

I do a lot more calculating than I do building, so I don't know if this 
coefficient of coupling figure is practically attainable or not. I'm
starting to 
think that it is because it seems like you could couple a lot more magnetic
flux 
lines with two pancake coils face-to-face than you could with two solenoid 
coils. You builders out there, do you agree? Disagree?