[Elecraft] AX-1 whip antenna

[Lyn Norstad]

With only 6 feet of coax between the rig and the antenna, you've probably
done about all you can do.  Proximity is your main problem now.

I'd look at the possibility of getting your antenna outside, even if you
need to disguise it somehow.

Lyn
WØLEN


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jobst Vandrey
Sent: Friday, December 06, 2019 3:16 PM
To: Steve Hull
Cc: Elecraft Reflector
Subject: Re: [Elecraft] AX-1 whip antenna

Sorry - I don't have very short jumpers available right now for that test -
the actual setup has 2 feet of coax between the antenna and the isolation
transformer followed by 4 feet of coax to the K3 connector.  This
configuration  works fine when testing in FT8 mode at 20 watts on 20 meters
and also on 40 meters (when using the AEX1 extender).

Jobst
AC0LP

On Fri, Dec 6, 2019 at 3:27 PM Steve Hull <shull2805 at gmail.com> wrote:

> I wonder what would happen if you moved the 1:1 choke to the other end of
> your feedline (closer to your K3)?
>
> -Steve
>
> On Fri, Dec 6, 2019, 11:41 AM Jobst Vandrey <jvandrey at gmail.com> wrote:
>
>> I have been trying to come up with a antenna for use in an apartment with
>> only limited success.  I have now set up the Elecraft AX-1 antenna and it
>> seems to play well with my K3 indoors with the antenna  placed in a
window
>> supported by a folding camera tripod.
>>
>> One caveat is that there seems to be significant feedline RF so a 1:1
>> isolation transformer near the antenna feed point is an absolute
>> requirement.  Without the transformer, even 1 watt transmissions  caused
>> various nasty computer gremlins when using digital modes.
>>
>> My apartment no longer needs to be a maze of wires and switches - many
>> thanks to Elecraft for this excellent product.
>>
>> Jobst
>> AC0LP
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