[Elecraft] KAT500 won't tune the 6 meter antenna

[Guy Olinger K2AV]

Hi George,

A 13:1 SWR is what you might measure on 50 MHz looking into 50 feet of RG8
with NOTHING attached to the far end. From a reasonableness and efficiency
standpoint one should not plan anything more than 3:1 as a normal load for
a coax in coax out tuner. Less than that as frequency goes up.

Particularly 10m and above can have quite a bit of loss if not operated
well-matched (1.5:1 or less) over coax long enough to go from a shack
outside and up to an elevated antenna.

An antenna tuner is not a remote trouble neutralizer. Time to find out what
is busted in the antenna up there, or if the coax is cut or crushed.

Good luck on chasing down the trouble. Been there done that for sure. :>)

73, Guy K2AV

On Monday, July 6, 2015, John Lemay <john at carltonhouse.eclipse.co.uk> wrote:

> I can't help you with the KAT500 question, but with a 13 to 1 SWR on 6m you
> would be strongly advised to improve the match at the aerial.
>
> John G4ZTR
>
> -----Original Message-----
> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net <javascript:;>]
> On Behalf Of George
> Rebong
> Sent: 05 July 2015 23:15
> To: elecraft at mailman.qth.net <javascript:;>
> Subject: [Elecraft] KAT500 won't tune the 6 meter antenna
>
> My KAT500 doesn't tune my 6 meter antenna. I tried it on AUTO mode and
> MANUAL mode. The antenna has 13:1 SWR.  The KAT500 relays doesn't make
> noise
> when I keyed the K3.  Did I miss something?
> 73
> George KE6TE
>
> Sent from my iPad
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