[Elecraft] KX1 possible antenna

Wed Dec 3 10:09:00 2003

Ron and all,

I am using a W3EDP antenna for my fixed station.  It consists of 84' of 
wire with a single 17' counterpoise, laid on the ground in any 
direction.  Seems it would be great for the KX1; I'll find out.  The theory 
is that the 17'  counterpoise with a similar length of the antenna acts as 
a twin lead (ladder line) feeder, and the antenna is actually a 67' end fed 
Zepp, except that the 17' feed-line length of the antenna radiates..  It 
has a low impedance on 40, 20, and 15 .  I added 67' and  8' counterpoises 
to get it to work better on 80 and 10, and my KAT2 and Z11 tune it on all 
bands including 160.  Might be a somewhat better ant on 40 than a 25' wire.

At 09:22 PM 12/2/2003, Ron D'Eau Claire wrote:
>That one might be a problem is used full length.
>
>The KX1 ATU has a limited matching range compared to the ATU's for the K1 or
>K2. There's just no more space in the little box for the inductors and
>capacitors needed for more range.
>
>With the KX1 and it's built-in ATU, you need to stay away from length
>approaching 1/2 wavelength. The 67 feet of this antenna is just about that
>on 40. It's also close to 1 wavelength on 20 which may produce similar
>problems. Of course, you probably don't have to deploy the entire wire.
>
>What it offers is convenience over picking up a hank of wire and winding it
>into a roll or onto something and finding some insulators. There's no
>inherent performance advantage in such an antenna.
>
>Ron AC7AC
>
>-----Original Message-----
>From: [email protected] [mailto:[email protected]]
>On Behalf Of Robert Parker
>Sent: Tuesday, December 02, 2003 3:19 PM
>To: Stuart Rohre; Pete Meier; elecraft
>Subject: Re: [Elecraft] KX1 possible antenna
>
>
>Has anyone thought about ordering and using the Halfer offered by the NJQRP
>club?  Comes with counterpoise.
>
>I know I could make one cheap enough but for $9.00 shipped, how can you go
>wrong.
>
>See:  http://www.njqrp.org/n2cxantennas/halfer/halfer.html
>
>Seems this would make an excellent protable antenna.
>
>Robert VE3RPF
>
>
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73, Chas,  W1CG
K2 462b, 3571 