----- Original Message -----
From: "Chuck" <firstname.lastname@example.org>
To: "Merlin-7 KI4ILB" <email@example.com>; "AA6DX - Mark" <firstname.lastname@example.org>;
"Mike Rhodes" <email@example.com>; <TOWERTALK@contesting.com>
Sent: Tuesday, September 19, 2006 10:22 AM
Subject: [TowerTalk] Tower mast..
> Grab the kids old bicycles or any off a junk heap to cannibalize the pedal
> sprockets. Have the machine shop mill out the center of one sprocket to
> fit around the mast at window level. Weld the sprocket to the mast. Drill
> two holes in the window base to allow the chain to run through the window.
I had forgotten about this. At one time I had planned on running seperate
rotators with one for HF and one for VHF/UHF using the concentric masts I'm
using now. I have 4 solid racing sprockets and two SS chains which I
purchased new from one of the local bicycle shops for that project.
Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com (Use return address from home page)
> Take the second bike and cut the sprocket hub off with sections of the
> bike frame still attached so you can use hose tie down clamps to mount to
> a flat surface next to the desk. Attach chain and manually rotate the
> Chuck WD4HXG
>>From: Merlin-7 KI4ILB <firstname.lastname@example.org>
>>Date: 2006/09/18 Mon PM 07:09:33 CDT
>>To: AA6DX - Mark <email@example.com>, Mike Rhodes <firstname.lastname@example.org>,
>>Subject: Re: [TowerTalk] Tower mast..
>>I was thinking that a power window motor off of most any car would make a
>>great driver for the rotor. I would just need to find or make the matching
>>gear for the mast.
>> I could also use small SPST momentary contact switches on a the outside
>>a cog, wired to leds to indicate direction ( I have hundreds of leds and
>>about 30 of so small SPST's on hand.)
>> I would just have to make me a ring of led's in the shack and wire them
>>the proper LED in the compass ring.
>> I also have some multi lead cable (there has to be 50 wires in this cable
>>that I picked up at an auction, it was in a crate I bought for $5)
>> To tell the truth, it sounds like a fun project.
>> The only hard part that I can think of is the gear for the mast pole.
>>> Joe .. that is part of the fun of Amateur Radio, `spearmintin' and like
>>> that! In the days of yore, many a ham shack had directional antennas
>>> by hand .. called the "ARMSTRONG METHOD" .. I have had some like that,
>>> couple as simple as a nylon line looped around the front of a yagi
>>> with appropriate tie-off points in the wanted directions ... with a
>>> tri-bander or like that, you don't need any north-pointing hoot owls or
>>> that .. find Polaris, stick a stake that-a-way, and go for it. Look
>>> ancient publications with Armstrong Rotator install hints .. not too
>>> find .. lots of hams had steering wheels with compass points to spin
>>> thar aerial! AND .. you can find bargains on rotators from time to
>>> especially if you are willing to take them apart and get them
>>> ... not brain surgery, and lots of help available here, and at the
>>> (or, rotor .. like you had in your `57 Chevvy distributor) repair
>>> they are really swell at providing info, and have parts galore... quite
>>> reasonable to redo as new!
>>> 73 Mark Nelson - AA6DX
>>> mailto: AA6DX@ARRL.NET
>>> ----- Original Message -----
>>> From: "Merlin-7 KI4ILB" <email@example.com>
>>> To: "Mike Rhodes" <firstname.lastname@example.org>; <TOWERTALK@contesting.com>
>>> Sent: Monday, September 18, 2006 3:50 PM
>>> Subject: Re: [TowerTalk] Tower mast..
>>> OK I'm busted...
>>> My budget is going to be very tight for a while after I move to the new
>>> qth. I kinda put my foot down with the wife so that I can get the funds
>>> the tower but there is not much left over after that (unless the home I
>>> in now sells for a bit more than I think it will)
>>> Most of you might know where I am going with this by now...
>>> For a while I can see me turning the beams by hand. That should not be
>>> problem (just a pain in !$$) as the tower will be right next to my
>>> I could keep that set up and build a chain or gear driven rotor myself
>>> add it later. I know its better just to buy one but like most hams, I
>>> building stuff.
>>> > Maybe I"m overlooking something but, where does the rotor go once you
>>> > have the mast sitting on a steel ball in the base of the tower?
>>> > Mike / W8DN
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