[Amps] FL-2100B input swr problem

[Jim Thomson]

Date: Fri, 30 Jun 2017 07:57:43 -0400
From: K2CB <k2cb at comcast.net>
To: Bruce Blain K1BG <bruce.blain at charter.net>
Cc: amps at contesting.com
Subject: Re: [Amps] FL-2100B input swr problem

<When the amplifier is in standby, the SWR at the exciter in bypass mode is fine. So the only thing that leaves is the piece of coax between the relay and the input portion of the band switch. I plan to try a temporary replacement later this morning.

Eric
K2CB 

##  It still makes no sense.    The input SWR  on 40m is good...higher on 20M..and sky high on all other bands.   If swr is good on 40M, and lousy on all other bands... and  since all the caps  have been replaced, that only leaves the slug tuned coils. 
IF the bandswitch for the tuned input is in sync  with the kw PI net bandswitch,  you should be able to see zero ohms between input coax on back of amp... IE:  coax center conductor....... and input side of input coupling cap...on each band,  with TR relay activated.   Input coupling cap  located between output of tuned input band switch..and cathode. 

Jim  VE7RF