[Elecraft] Cal AT100 SWR bridge

[Geoffrey Mackenzie-Kennedy]

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>
>
>