[Elecraft] Portable Antennas (near end fed)

va3bxg at gmail.com va3bxg at gmail.com
Fri May 11 16:20:48 EDT 2012


Thanks for the update. This answers the question about the buddipole. And somewhat along the same lines.

Now with KX3 I need to figure out which loop is the best (coverage etc)

Now where is that 'easy button'

-----------Original Message-----------
From: Jim Dunstan
To: va3bxg at gmail.com
To: elecraft-bounces at mailman.qth.net
To: k6dgw at foothill.net
CC: Elecraft list
Date: May 11 16:15:27
Subject: Re: [Elecraft] Portable Antennas (near end fed)


At 03:16 PM 5/11/2012 +0000, va3bxg at gmail.com wrote:
>I for one am in a quandary on what to get at dayton
>
>A buddipole, alex loop, or g4tph. Being a road warrior, need a good 
>working interior (most times hotel rooms are not accessible to the 
>outside) portable.
>
>And a partridge in a pear tree as well :-)
>Robert
>
>a 'kosher' ham
>Sent from my BlackBerry device

Without doubt the best kind of antenna given the environment you describe 
is a small tuned loop.  How well it works will depend on how well it is 
built (literally).  The quality of the loop material and the tuning 
capacitor will determine the overall efficiency (and effectiveness) of the 
antenna.  The buddipole in either the vertical or dipole arrangement will 
only come into its own when outside and away (to some degree) from 
interfering structures.  I have had success with a tuned small loop indoors 
but not so with center fed or end fed dipoles.  However they (longer 
dipoles) work well even a few feet outside the building ... eg. I used a 
bent up wire dipole made of invisible fishing wire suspended a couple of 
feed away from a balcony with thin bamboo poles ... it worked vy well on cw 
and PSK.

73 Jim, VE3CI




Robert

a 'kosher' ham 
Sent from my BlackBerry device


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