[Elecraft] Cal AT100 SWR bridge

[Rich McCabe]

Thanks to all that responded.

Turns out that somewhere along the testing stages I ended up with a bad 
connection on a PL-259. Everything looked good on the dummy load, but after 
connecting, disconnecting, reversing etc. the problem became apparent.

I also removed panels and did a better job sanding the connections for 
ground and do not seem to have the 40 meter problem anymore unless that went 
away with the feedline fix.

So all is good :)

73,

Rich

----- Original Message ----- 
From: "Geoffrey Mackenzie-Kennedy" <gmk at gm4esd.fsworld.co.uk>
To: "Dan Barker" <dbarker at visioncomm.net>
Cc: "Elecraft Discussion List" <elecraft at mailman.qth.net>
Sent: Friday, September 24, 2004 7:24 AM
Subject: Re: [Elecraft] Cal AT100 SWR bridge


> Morning Dan,
>
> Agree with all. My thinking was to remove the antenna system from the
> equation so that the "baseline" could be checked out before dealing with 
> any
> antenna system induced problems. I know nothing about the Daiwa, but if it
> is supplied with mains power any ground loop Power Supply -  K2/100 -
> KAT100 - Daiwa - mains , or variations of this, might become "visible". I
> think Rich has the Daiwa between KAT100 and antenna - but that's for Rich 
> to
> say !!
>
> Will standby with interest.
>
> 73  Geoff    GM4ESD     K2/100  #3255
>
>
>
> ----- Original Message ----- 
> From: "Dan Barker" <dbarker at visioncomm.net>
> To: "Elecraft" <elecraft at mailman.qth.net>
> Sent: Friday, September 24, 2004 12:22 PM
> Subject: RE: [Elecraft] Cal AT100 SWR bridge
>
>
>> Is the Diawa between the K2 and the Tuner, or between the Tuner and the
>> Antenna?
>> Is the Antenna resonant?
>>
>> You should not expect a "flat" SWR after the tuner unless the
>> antenna/feedline system is a perfect match - That's the purpose of the
> tuner
>> in the first place.
>>
>> To compare apples to apples, check the SWR of the same thing at the same
>> spot. IE, put the Diawa in the line only, measure SWR, remove the Diawa
> and
>> put the KAT100 in line using the same connectors and cables, turn off the
>> Auto-tuning function (I forget - CALP?), and check again - Same 
>> frequency,
>> Same antenna, Same feeders, Same cables, jumpers, connectors and testing
>> location.
>>
>> Let us know what you find.
>>
>> Dan / WG4S / K2 #2456
>>
>> <snip>
>> it may be as high as 4:1 on some bands even when the tuner says it is 
>> flat
>> or near flat.
>> </snip>
>>
>>
>
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