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![]() "John Ferrell" wrote in message ... I have a Cushcraft A3 beam on a crank up/tilt over tower. When I tilt it over, it still requires a ladder to work on it due to the length of the elements. What I would like to do is to be able to rotate it as though I were trying for vertical polarization before or during the tilt over process. That would bring the antenna to a "flat" attitude for maintenance and storm protection. Any thoughts? The usual old fashioned Ham parameters apply: Little cost as possible, build as much as I can my self, etc...... BTW, I have several good TV rotators I might use, but none with a hole all the way through! de W8CCW I have a Hygain TH3Mk4, which is on a 14 foot boom. What I do is to first rotate the antenna so that when the tower is tilted down, the antenna is pointed straight up, with the reflector parallel to the ground. I tilt the tower until the rotator is resting on the part of an 8 foot step ladder that the paint can is supposed to go on. This gives access to the reflector and driven element. At that point I would take the antenna off the boom if I had to do anything other than work on the feedline, but have had no reason to do that. Here is something else you could try: drill a hole through the boom, mast, and mounting plate, and insert a 1/4 inch bolt through the whole thing. Now, remove the U bolts that fasten the plate to the mast. You can now swing the boom parallel to the mast. I don't need to do this for the HyGain, but it should work with the CushCraft. Tam/WB2TT |
#2
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I had not thought about pointing it up/down, I was fixated on rolling
the boom. I will think on that. Thanks! John, de W8CCW On Sat, 2 Jul 2005 10:28:02 -0400, "Tam/WB2TT" wrote: "John Ferrell" wrote in message .. . I have a Cushcraft A3 beam on a crank up/tilt over tower. When I tilt it over, it still requires a ladder to work on it due to the length of the elements. What I would like to do is to be able to rotate it as though I were trying for vertical polarization before or during the tilt over process. That would bring the antenna to a "flat" attitude for maintenance and storm protection. Any thoughts? The usual old fashioned Ham parameters apply: Little cost as possible, build as much as I can my self, etc...... BTW, I have several good TV rotators I might use, but none with a hole all the way through! de W8CCW I have a Hygain TH3Mk4, which is on a 14 foot boom. What I do is to first rotate the antenna so that when the tower is tilted down, the antenna is pointed straight up, with the reflector parallel to the ground. I tilt the tower until the rotator is resting on the part of an 8 foot step ladder that the paint can is supposed to go on. This gives access to the reflector and driven element. At that point I would take the antenna off the boom if I had to do anything other than work on the feedline, but have had no reason to do that. Here is something else you could try: drill a hole through the boom, mast, and mounting plate, and insert a 1/4 inch bolt through the whole thing. Now, remove the U bolts that fasten the plate to the mast. You can now swing the boom parallel to the mast. I don't need to do this for the HyGain, but it should work with the CushCraft. Tam/WB2TT |
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