| Author |
Message |
    
Allagator
| | Posted on Tuesday, September 09, 2003 - 8:28 pm: | 
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Has anyone had a idea on taking a m103 or m104 and making it flip from vert to horz with a flip of a switch but still keeping the m103 or m104 stock !!!
Almost like having someone on the tower rotating it from horz to vert but powerd by a motor of some kind ??????
Good idea or bad ??????
Thanks Allagator |
Taz
| | Posted on Tuesday, September 09, 2003 - 9:10 pm: |
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dual rotors |
Allagator
| | Posted on Tuesday, September 09, 2003 - 10:22 pm: |
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well Taz it would be like the powerlock motor out of a car just bigger mounted on the side of the mount for the beems to flip them from up to down !!!!!
Its still in the working just wanted to know if it mite be a good idea to try or not !!!!
Allagator |
Tech808
| | Posted on Tuesday, September 09, 2003 - 10:40 pm: |
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Taz is right,
Regular rotor for Mast to Antenna and a Small Radio Shack rotor to flip antenna from Vert to Horz.
Wilson Beam owners have done this for years to switch from Vert to Horz.
Lon
Tech808 |
Bullet
| | Posted on Tuesday, September 09, 2003 - 11:53 pm: |
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right on guy's
yaesu sells a rotor for this purpose its not super expensive if you want a new rotor that will pass a bigger boom dia.
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Allagator
| | Posted on Wednesday, September 10, 2003 - 1:54 am: |
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Humm i think im out of date on things !!!!
Or not up to date on things !!! |
Pig040
| | Posted on Wednesday, September 10, 2003 - 10:45 am: |
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There is one of those rotors for sale on E-bay right now, used, 450.00 |
mikefromms
| | Posted on Wednesday, September 10, 2003 - 12:17 pm: |
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Keep on thinking, Allagator, I find this concept interesting. I know a man in my town that has built a rotor from (I think) a washing machine motor. He says it will turn the antenna and the pole and all! Now that's strong!
mikefromms |
Kirk
| | Posted on Wednesday, September 10, 2003 - 2:22 pm: |
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Allagator,
I had a similar set-up about 6 years ago at a different location. I used a Cushcraft 12 Meter "SkyWalker" [modified for 11 meter] and put it on a Yaesu G-5400 Az/El rotor. This rotor was meant for moonbounce/sat. tracking type of work. The rotor, then, was about $600, the beam was $300 or so. The rotor used a dual feed of rotor wire (8 conductor). My only flaw was, I did NOT mount this on a mast pipe. I used a flat mount on a modified American Steel tower. Horizontally it was excellent for swr, but as soon as you got about 45 degrees vertical, the antenna started to "see" the tower and coupled with it, raising the swr off scale all the way vertical. I ended up using it pitched at about 30 to 35 degrees off axis on the vertical side and it did pretty well. The rotor worked flawless. I have sinced moved but would try it again only this time, mounting with a mast pipe and larger tower. I had a great idea, just did not have the provisions (tower wise) to handle it. Good luck!!--Kirk |
Bigbob
| | Posted on Wednesday, September 10, 2003 - 10:00 pm: |
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I heard of a local man 25 yrs ago,bought hisself a BEAM antenna,was gonna talk skip,was told 3-element was all he needed.He followed the directions had some friends help him and up it went.He hooked it all up,asked for a radio check,and all his friends said he was way down in mod.,he checked and rechecked everything,just couldn't understand it,so he checked swr,OFF THE SCALE,now he was stumped,so he called Doc(local tech)as soon as Doc saw the antenna he knew the problem,it was upside down,lmbo,lol. |
Mr_Rf
| | Posted on Thursday, September 11, 2003 - 2:25 am: |
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Unless you have deep pockets then the Yaesu 5400 rotor is out of the question here guys, costs too much for the project!!!
There doesn't seem to be any other currently manufactured low cost rotor that allows the antenna mast pipe to pass totally through the rotor motor unit. (I suspect this would be a great money making idea for anyone who's looking for something to manuufacture and sell...need to make sure it will handle a 2" mast pipe! ;-)))
So, you'll be looking for a older model rotor made by the Alliance Corp, models U-100 or U-105. These models allow you to pass a pipe (in this case "a boom") totally through the rotor assembly and mount the rotor in place of the mounting plate/clamp assembly on your beam. The only drawback is the maximum boom diameter is 1-1/2" (limited by the hole size through the rotor). Since the rotor's mounting clamps are made to be mounted vertically and you will be using the rotor sideways a little homebrewing will be necessary to mount the rotor.
These rotors can usually be picked up on eBay for $50 or so.
Good Luck,
Mr_RF |
Pig040
| | Posted on Thursday, September 11, 2003 - 10:36 am: |
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BigBob, I know a guy that was complaining after putting up his beam, and I went over and looked, he was using it backwards, was talking through the back door!! |
Bigbob
| | Posted on Thursday, September 11, 2003 - 6:48 pm: |
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Allagator rotor problem is easily solved use standard cheap rotor,attach stub, clamp to a boom or mast plate,attach plate to boom,drilling appropriate spaced holes in plate,use u-bolts.Boom will orbit the stub. Pig040,you mean he was talking out his.....I mean pointing his antenna backwards? |
Kirk
| | Posted on Thursday, September 11, 2003 - 8:54 pm: |
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True...the 5400 is expensive, but remember this fellas....you better beef up that cheap rotor or it just may fail in a couple years...and you'll be climbing that tower to replace what you put up. There is no way to take the weight off the horizontal rotor, so make sure it can handle the torque/weight load you are puting on it. And, you'll need to make sure this rotor is water tight if it's going to be in a position that is non-typical to it's design. I've seen many a Channel Master freeze because of too much weight and cracked seals. If you're looking for a cheap way out.....well..you get what you pay for. Just my opinion. |
Allagator
| | Posted on Thursday, September 11, 2003 - 10:56 pm: |
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Well guys i started on my project today just to see what i could do and so far useing a power lock unit out of a 90 buick ! So far it has worked but just on the boom not with rest of the antenna put on it yet ! tomrrow ill try to put it togeather again and see how much ajustment it needs to make it work !! Hey it wsa just a idea rite !!! i hope it dont turn to fast with 9 volts !!!
Allagator |
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