| Author |
Message |
    
Jasondog3
New member
Username: Jasondog3
Post Number: 7
Registered: 3-2016
| | Posted on Tuesday, August 01, 2017 - 11:50 am: | 
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My mast pipe will be about 31 feet from the ground. With the antena on top. I will cemented the base into the ground, and have it also bracketed to side of house.
What is the best mast pipe to use? A local metal manufacturing company wants to charge me $1800 for schedule-80 pipe at that length.
Some other bloke recommends Rohn Telescoping Pipe. But the Rohn documentation says: "Telescoping Masts are not recommended for commercial, CB or beam antenna installations."
The A99 is a CB Antenna so that makes me nervous Maybe the Rohn pipe will bend under a heavy wind. |
N8fgb
Intermediate Member
Username: N8fgb
Post Number: 129
Registered: 5-2002
| | Posted on Tuesday, August 08, 2017 - 8:24 pm: |
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Without knowing how high up you are going to place the support bracket, can not really recommend what to use. The A99 is not very heavy, so you don not have to go nuts. |
Thehobo
Intermediate Member
Username: Thehobo
Post Number: 148
Registered: 2-2004
| | Posted on Wednesday, August 09, 2017 - 11:12 am: |
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hello jason, ive got a mr. coily up about 30 feet on a 50 foot push up.. i just used the bottom 4 sections of the push up.. so far its been ok even with these oklahoma winds.. mite even be at 36 feet as each joint of the push up is 9 feet in leanth??
its a big and heavy antenna so your a99 will be ok on the push up.. hope this helps?? thehobo
thehobo
269150 monitor ch.
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Tech237
Moderator
Username: Tech237
Post Number: 1883
Registered: 4-2004
| | Posted on Wednesday, August 09, 2017 - 4:25 pm: |
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"Telescoping Masts are not recommended for commercial, CB or beam antenna installations."
The key word is BEAMS. The A99 is a vertical not a beam. I have had HF Verticals on push up masts made from Schedule 40 PVC pipe, with no issues
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Charliebrown
Advanced Member
Username: Charliebrown
Post Number: 560
Registered: 10-2002
| | Posted on Wednesday, August 09, 2017 - 8:44 pm: |
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I use to use push up mast and when I did I always used guide wire. My push up mast came with ring's spaced along the push up mast for the wire or cable if you like to connect to. I would use a metal mast. |
