[Elecraft] attenuator in amp was Re: K3 and Expert 1K-FA

[Paul Christensen]

> A 3dB pad gives 6 dB return loss. For example if load SWR is 2:1 (5.5dB 
> RL) and we add a 3 dB pad, return loss is 9.5 dB (1.4:1 SWR).

Tom,

The 6 dB R/L from the 3 dB pad is definitely correct but you lost me on the 
2:1 SWR and corresponding R/L figure above.  I calculate a 2:1 VSWR as a 9.3 
dB R/L and a 1.4:1 SWR at 15.56 dB R/L.  What am I not taking into 
consideration?

Paul, W9AC