[Elecraft] KX-1 80M Question

[Don Wilhelm]

Jay,

The tuning range of the KXAT1 will b limited on 80 meters, so your 
antenna configuration will be more critical - I recommend an 80 meter 
antenna that is close to resonance.
An end fed antenna suspended from a tree or a hotel balcony is not 
likely to do the job on 80 meters simply because it will have to be too 
long for practical purposes in those situations (135 feet).

If you are happy with your 40, 30, 20 KX1 and do not have any pressing 
needs to add 80 meters, I would not change it.
OTOH, if you are backpacking in the US Southwest areas and want to have 
a source of emergency communications (due to propagation conditions), 80 
meters may be the only logical choice - just check out the antenna 
situation before embarking on your trip.

73,
Don W3FPR

On 3/16/2015 1:03 PM, J wrote:
> I'm considering replacing the 30M module in my KX-1 with a 30/80M module,
> and had a few questions first:
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> What chances of contacts with 4 watts on 80M. using a typical end-fed
> antenna suspended from a tree or hotel balcony?  (Seems like higher bands
> are easier at QRP)
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> My KX-1 has the KXAT-1 ATU.  Will the KXAT-1 also attempt a match on 80M?
>
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> Has anyone had success with ONE antenna and counterpoise length that will
> load properly on 80/40/30/20 using the KX-1/KXAT-1?  (I'm thinking a length
> which avoids High-Z on these bands)
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> 73, Jay
>
> W6CJ
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