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Discussion in 'Amateur Radio Antennas' started by PA770, Jan 11, 2019.
Would it be back to back U bolts or just one and fab a bracket.. I really don't know.
Found this place with custom pipe..
6" of 2" od with 1.5" ID to slide into the 2" mast.. then 18" of 1.5" OD (0.120" wall thickness) to slide into that.
I would bolt and mig weld it.. then put A99 on that with factory U bolt.
Would schedule 40 1.5" ID with 1.90" OD accomplish the same thing as fast as mating with a 2" mast pipe??
Didn't think to ask what the ID was.of 2" mast pipe.. duh..
Image on the left will work.
Or two of these.
So this is a 2 pk of these for $26.. with 2 stacked on the A99 mounting point to the 2" mast I should be gtg.. Thanks Capt.. nice wide surface area..
What about an Alliance U110 rotor (rated at 5 sq ft load) $200 and just a 1 3/8" mast for the setup..
3 element Maco or Sirio and the A99..
Right around 5 sq ft total..
Then I could use a different 'rocket top' that fits the smaller mast better using the TB50 bushing..
I really don't see me going larger up top..
The A99 would then bolt right on the 1 1/4 - 1 3/8" mast without issue..
I made a hazer for my Rohn 25 I bought a Yaesu rotor thrust bearing and my 100.00 rotor has worked for almost 2 years. A bearing is well worth the price paid to save a rotor. I have a 4 element Maco flat side and an IMAX on top. Works great.in case your wondering the hazer rides up and down the tower with a winch and cable.
Nice work! Looks great!
I bought my tower used, has the rocket top that your talking about. I poured a full yard of concrete and reinforced. 40’ free standing
Have you checked American tower sections on E-bay I bought my tilt base section and put it in the ground.
Is that a 1 1/4" mast or 2"? And which rotor did you have on it??
1 1/4 mast galvanized electrical from the Depot 10’ section the threaded one.and the rotor is a chanelmaster. The rotor keeps working but I will change it out for a Yaesu when it does. It wasn’t easy to align and mount the mast rotor and bearing. It was binding until I got it straight
I mounted the Maco vertical at first along with my dual band beam for 2 and 70 cm. I like it better flat side with the IMAX vertical on top.
Is that one 10' section or is that 2 with a threaded coupler??
If I remember right, I used a 10’ section and the IMAX is mounted above the Maco with a small section of The TV antenna mast pipe that Radio Shack was selling. I had it laying around and it’s somewhat strong and light. I think I cut the 10’ section back to 8’ because of the small rotor. And the TV mast fits inside.
40’ tower called for a hole 3’x3’ and 4 ft deep. Stone in the bottom for drainage and reinforced one full yard of concrete 60 x 80 lb bags but it was cheaper to but it mixed and delivered. She doesn’t move when windy. Check craigs list. There was a bunch of towers in my area. Someone had 4 ea 100 ft towers on the ground for 2,500.00. One nice 80’ crank up ham moving to Florida