[SixClub] [AR52MHZ] RE: Best 6m Mobile Antenna?

[kd4e]

Building on the mobile beam idea ... I stumbled upon
this http://www.hamuniverse.com/K4mmg2and6meter.html

Variables:

1.  The target vehicle is a full-size van.

2.  The metal body of the back of the van serves as an
	untuned Reflector.

3.  The Driven Element is set 32" off the back of the
	van near to roof level.

4.  The Driven Element is approx. 56" (center-fed coax
	a little like a folded dipole, but not a fd).

5.  Support for the DE could be three bamboo or fiberglass
	fishing rods extending from the roofline, the
	middle one also supporting the coax feedline.

6.  A Director could be added but would create serious
	risks for damage when backing-up, could draw the
	attention of law enforcement for extending too far
	beyond the length of the van, and would likely
	require a support connected to the trailer hitch.
	(Note:  If a small trailer or aluminum wheelchair
	platform were connected to the trailer hitch that
	might negate the legal concern about "too long" -
	but remembering it is there so-as to not damage
	it would remain a challenge!)

WDYT?

> I would think a simpler solution would be a six meter
> dipole in the horizomtal plane. It already has 3db gain
> over a single halo, but then you loose the advantage of
> omni directional ( although lower gain ) of the halo.
> 
> Taling this futher, if you could mount a six meter beam
> facing forward along the front-to-rear axis of the car, (
> much like grid square rovers do ) then as long as you
> were facing the other station, things would be great.
> 
> Unfortunatly, roads seldom cooperate.
> 
> Don WA4NPL


-- 

.Thanks! & 73, doc, KD4E
.Have an http://ultrafidian.com day!
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