[TowerTalk] Rural Housetop deployment methods?

[Lance Peterson]

I'm deploying an antenna on my residential rooftop for 2.4GHz wireless for a community LAN and I was wondering the best way to get 20' high with no guy wires.  Currently I am using a 3ft tripod with a 1.5 OD 10' piece of heavy wall conduit...very rigid and withstood a heck of a windstorm yesterday, but not quite high enough.  Loading is minimal with one radio and a 70" antenna on top.  What supports and materials would be best for this application.  I was really hoping there was a 20' mast I could use that would fit in my current roof tripod that accepts 2"OD max.

If I have to, I could settle for 15'...

Thanks,
Daxx