I'm actually on one of the hills but unfortunately one of the smaller ones I have no problem getting the west p25p2 system im just wondering about airband and ads-b. Im debating maybe just trying an antenna in the attic just to start and then if I don't get my desired results trying the roof then....I like the idea of a corner mount as well.How close to 30 are you? From what I remember of the area, 30 runs right thru a little valley...are you fortunate enough to be up on one of the hills bordering it? You may just need to get outside of your house, and not that far up in the air.
I've used stainless steel strap type chimney mounts and some home made ones since the mid 1970s with absolutely no problems. I've never seen or heard of a chimney problem from using a strap type mount. If you think about the forces it imparts on a typical brick chimney the bricks and mortar can't go anywhere because they are being held together by the straps under tension.
If you were to do something stupid like have the two straps only a foot apart trying to hold up a 20ft mast with a huge antenna, then all bets are off, but a pair of straps 4 or 6ft apart with a reasonable size mast and antenna is absolutely no problem.
Agreed, I put this on a S.E. PA rescue station's chimney to prove a point that their magmount on the AC condenser shell was s**t and the reason their alerting got worse after the county switched from low band to VHF hi-band AND started transmitting off a tower they had line of site with. To appease the B.O.D. (who was family with the local inspector), we put 2" aluminum angle iron 2 feet above & below the strap lines (on each corner) to distribute the forces on the chimney, and the whip height was even with the roof peak...and that was 6 years ago...not a peep. Pretty sure they had roofing work done on the station since then.
if you do it carefully, and don't expect it to hold a Super StationMaster on 20 ft of schedule 80 up to hurricane force winds, I think you'll be ok.
2lbs on a 5ft mast secured w/ (assuming) 2 straps to a bricked chimney should be just fine. Much heaver antennae were all the rage back in the day for broadcast TV, and those had much larger wind loading than the Omnix does.I was wondering if it would put too much stress on the chimney seeing that it weighs only 2 lbs.
Its weight are of less importance, it's its wind load that matters, how much drag it has in the wind which increases with the square root of the wind speed. Thice the wind speed gives 4 times the power that tries to drag down the antenna.What about a DPD Omnix, that weighs only 2 lbs, a 5 ft mast with chimney straps? Would that still not be a good idea ?