[Amps] Swan Mark 1 on 160 meters

[Joe Subich, W4TV]

> How does a torrid used on 160/80 meters get hot on 10 meters if it’s 
 > shorted out?

Is *only* the toroid for 160/80 shorted out (bypassed) or is all of
the unused inductor (15-160) shorted?  If the latter and the 10 meter
coil is in line with the 15/20/40 meter coil, the 10 meter coil will
couple to the 15/20/40 meter coil.  The 15/20/40 meter coil is in
series with the 80/160 toroidal coil and circulating currents will
flow in the entire string (by transformer action).

Placing the 10 meter coil at right angles to the 15/20/40 coil *or*
separately shorting the 80/160 toroidal coil should prevent current
flow (and the generation of heat) in the 80/160 coil.

73,

    ... Joe, W4TV


On 2021-06-30 3:37 PM, gudguyham via Amps wrote:
> How does a torrid used on 160/80 meters get hot on 10 meters if it’s shorted out?
> 
>