[TowerTalk] Brainstorming: A homebrew Steppir like beam....

[AA6DX]

And then, there was the hydraulically powered "screwdriver" style mobile ...
without the screwdriver ...Antec?  Like the Webster BandSpanner, with blue
coil cover ... I often thought that I could make a nice multi-band antenna
dipole .. 2 of them back to back ..  You used windshield washer fluid for
the hydraulics, because of the low freezing point.  Water could freeze and
ruinicate the aerial.
Hmmm ..   that get some idears goin'!
73 --- Mark
From: "GALE STEWARD" <k3nd at yahoo.com>
To: "towertalk reflector" <towertalk at contesting.com>
Sent: Monday, April 26, 2004 9:44 AM
Subject: Re: [TowerTalk] Brainstorming: A homebrew Steppir like beam....


AS I recall, back in the late 60's or early 70's there
were some pictures in QST showing a 4 element yagi
that used air pressure/vacuum to extend or retract the
element ends. Think it was built be a ZL station.

73, Stew K3ND

--- on4kj <on4kj at skynet.be> wrote:
>   Hey Tom and All,
>
>   Every body knows the famous pneumatic mast used in
> the army.
>   Ever some body tried it the horizontal way to tune
> the antenae ?
>   Even the boom could then be adjusted.
>   A real programmers delight to control the system.
>   I just waked up half an hour ago....hi hi
>
>   Jos on4kj
>   ________________________________________________
>