[Elecraft] Re: KAT100 affecting power output

[Larry Phipps]

Hi Bill. I don't have the KAT100, but those values look typical for 
antenna tuners that are internal to a rig. Because of size constraints, 
they tend to be a bit lossier than external tuners, although all tuners 
have some loss, which varies with band. I prefer external tuners for the 
simple reasons that they can be heftier (handle 1500W), can be used with 
all the rigs in the shack, can be used with or without the amplifier on 
and can be placed after the wattmeter, which is the best place for them. 
Internal tuners are great for portable operation, although I didn't get 
one this time because I use a K2 for remote ops. 73, Larry N8LP Date: 
Thu, 23 Oct 2008 17:44:00 -0700 (PDT) From: NZ0T <NZ0T at cox.net> Subject: 
Re: [Elecraft] KAT100 affecting power output To: 
elecraft at mailman.qth.net Message-ID: 
<1224809040927-1370457.post at n2.nabble.com> Content-Type: text/plain; 
charset=us-ascii Was it something I said? Dumb question or is the 
problem something obvious I should know? Any help appreciated! NZ0T wrote:

> > 
> > It seems my KAT100 is reducing power output on 10, 12 and 15 meters when
> > in line:
> > 
> >                    w/tuner                w/o tuner
> > 10                 75w                       85
> > 12                 80                         95
> > 15                 85                         90
> > 
> > I have tested the short coax jumper between the rig and tuner and it is
> > fine.  Do I neede to redo the power calibration of R3/R4?  Could this be
> > off and shutting down the power?  Why just on the upper bands?
> > 
> > As always thanks to all for any help!
> > 
> > 73 Bill NZ0T