Stan or Patricia Griffiths wrote:
> Bill Coleman wrote:
>
> > On 11/2/01 3:51 AM, Zoltan.Pitman@libertel.nl at
> > Zoltan.Pitman@libertel.nl wrote:
> >
> > >Closed circuit TV camera for heading indication ?!?
> >
> > Yes, why not? Such a system isn't incredibly expensive. Black and White
> > cameras are available for less than $100 US dollars.
> >
> > It has the advantage that you always know which direction your beam is
> > pointed -- even if the mast slips in the rotator.
> >
> > Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net
> > Quote: "Not within a thousand years will man ever fly!"
> > -- Wilbur Wright, 1901
>
> How about a totally FREE beam indicator system? If it is on a freestanding
> tower
> (or wood pole like my quad was in 1955 when I was a kid), you can tie a
> string on
> the boom out about 4 feet from the tower and let it hang down to about 5 feet
> off
> the ground and weight it with anything. As the beam rotates, the weight
> travels
> around the tower and, in my case, I could watch it out the window of the
> shack.
> At night, I illuminated the weight, which I painted white, with a flashlight.
>
> Later, I had to modify the indicator system when I added a set of guys to the
> pole that interferred with the string's travel around the pole. I wrapped the
> string around the mast and routed it down the pole and into the shack with
> several pulleys. As the beam rotated, it moved the string up and down the
> wall
> of the shack and was held taught with the weight, now inside the shack. I
> wrote
> "NESW" vertically on the wall next to the string and used an alligator clip on
> the string to point at the direction the beam was pointed. I scrounged the
> pulleys from an old drapery rod and I already had the alligator clip. Cost:
> $0.00. I retired the flashlight so there was no longer any battery
> maintenance
> costs.
>
> You can get creative if you are trying to work enough countries to achieve
> DXCC
> on a $2.50 weekly allowance from your parents. This is the wrong forum to
> discuss the 900 watt amp my Dad and I built from scratch for about five cents
> per
> watt . . .
>
> Stan
> w7ni@easystreet.com
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