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

Tom W8JI w8ji at w8ji.com
Wed Apr 21 20:27:52 EDT 2010


----- Original Message ----- 
From: "Paul Christensen" <w9ac at arrl.net>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, April 21, 2010 7:43 PM
Subject: Re: [Elecraft] attenuator in amp was Re: K3 and 
Expert 1K-FA


> 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).

My bad dyslexia Paul.

A 3dB pad gives 6 dB return loss. For example if load SWR is 
2:1 (9.5dB
RL) and we add a 3 dB pad, return loss is 15.5 dB (1.4:1 
SWR).

That should make more sense! 



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