[Elecraft] low power on 6 meters

[K4ia]

I notice high swr when my AL572 is in the antenna circuit - even when turned off.  When I hook the coax directly to the K3, the swr is 1:1. Haven't figured out why except maybe there is a low pass filter built in the amp that is in line all the time.  

Craig Buck

On Jul 17, 2011, at 11:07 AM, WILLIS COOKE <wrcooke at yahoo.com> wrote:

> Bob, do you have an amplifier in line on 6 meters?  I have noticed that my 
> Clipperton L absorbs about 15 watts on 6 meters even when it it turned off.  It 
> does not do this on the lower bands.  You can easily find out by taking the 
> connectors loose on the amp and replacing with a short barrel connector.  May 
> not be your problem, but it is mine.
>  Willis 'Cookie' Cooke 
> K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart 
> 
> 
> 
> 
> ________________________________
> From: Robert Garceau <rgarceau at snet.net>
> To: Elecraft <elecraft at mailman.qth.net>
> Sent: Sun, July 17, 2011 6:11:59 AM
> Subject: [Elecraft] low power on 6 meters
> 
> I have seen this issue posted before, but no answers that I can see.
> 
> 
> 
> I have a K3 and the output is no more than 52 watts with an swr of
> 1.23..sometime get it up to 62.
> 
> 
> 
> Now I have the KPA500 and using 40 watts to exite the amp, I get just a tad
> over 425 watts.
> 
> 
> 
> Don't think I want to push it over 40 watts. And to be honest there probably
> isn't much difference between 425 and 500, but would like to know why I
> can't get the 100 like I should..
> 
> 
> 
> Bob, W1EQ
> 
> 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html