[Elecraft] KPA500 and KAT500 Ports

[WILLIS COOKE]

The request was in response to a statement that the KAT-500 was not required if 
an all band antenna was used.  The challenge was to name an antenna that 
will give full coverage WITHOUT  TUNER making the KAT-500 superfluous.  Of 
course, full coverage of 20 is 14.0 to 14.35 and 80 and 160 are included.  
Alpha-Delta makes nice products, but achieving full coverage on 160, 80, 20 and 
10 is elusive.  Maybe you only work CW and don't care about the phone band or 10 
meter FM, but if so, you don't require full coverage.  Even 40 requires you to 
accept a pretty high SWR at the ends to cover the whole 40 meter band.  LPs can 
be good for broad banding, but even the RCA LPs that I saw on Guam with the 
rotors that weighed about a ton only covered 7.0 MHz and up.
 Willis 'Cookie' Cooke 
K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart 




________________________________
From: Dave Wright <hfradiopro at gmail.com>
To: elecraft at mailman.qth.net
Sent: Wed, July 13, 2011 11:43:49 AM
Subject: Re: [Elecraft] KPA500 and KAT500 Ports

I'll second that Alpha-Delta reference.  Full band coverage on 40/20/15/10,
plus about 100kHz on 75/80, partial-full coverage on 17m although it isn't
cut for it, and some 6m as well.  Full coverage 80m-6m with tuner...and even
160m, but the efficiency has to be terrible.

And easily handles 500w+

73

Dave

On Wed, Jul 13, 2011 at 12:26 PM, Ken - K0PP <kengkopp at gmail.com> wrote:

>
> Hi Cookie,
>
> My Alpha-Delta pretty much meets the no-tuner-needed
> requirement.  It's just a fan dipole with another name. (:-)
> I'm aware of at least five of them in this sparsely ham
> populated area.  It -is- bandwidth limited on 80/75, but
> mine's cut for 3550.
>
> My station is often used in major contests (KE7X) and
> we put up the AD as a 2nd station antenna that doesn't
> need any attention ... just switch to it and go.
>
> It's extremely well-made, but very heavy.  It's at 65',
> help up with 3/8" Dacron rope and heavy pulleys.
>
> 73! Ken - K0PP
>
>
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-- 
Dave
K3DCW
www.k3dcw.net

"Real radio bounces off of the sky"
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