[SJRA-Members] Home Antenna Install

[Craig Henning]

Thanks Bob


> On Nov 11, 2021, at 19:19, Bob Beyer via SJRA-Members <sjra-members at mailman.qth.net> wrote:
> 
> Karl,
> 
> We used to use a type of mount called a "non-penetrating roof mount" (NPRM)
> to mount satellite antennas on top of roofs frequently.
> Generally, our buildings had flat roofs but sometimes we'd encounter a
> situation where the building would have a gabled roof like a typical
> single-family home.
> For this there is a special version of the NPRM called a ridge mount.
> Instead of sitting flat on the roof, it straddles the ridge.
> 
> The mount does not bolt, or screw to the roof in anyway.  Instead, it uses
> cementer paver blocks as ballast to hold the mount in place.
> The wind load for your vertical antenna will be fairly small so the amount
> of ballast required would not be enormous (maybe a couple hundred lbs at
> most) and this will be spread out over a significant area.
> We used these types of mounts for dish antennas up to 1.8m in diameter and
> also in portions of the country like Florida and the gulf coast where they
> get hurricanes on a routine basis to hold 1.2m antennas.
> I had applications where we had wind speed ratings of 150 mph or more and we
> needed to use over 1000 lbs. of ballast in some cases so I know these things
> work.
> 
> The mounts I preferred are made by a company called Baird.
> They are made from heavy duty, hot dipped galvanized steel.  They come in a
> variety of styles and sizes with various mast diameters and lengths.
> 
> This is a link to their ridge mounts for "wireless" applications.  Wireless
> in this case means things other than satellite antennas.
> 
> https://www.bairdmounts.com/products/wireless/by-mount-type/Ridge-Peak-Roof-
> Mounts?mtid=4
> 
> For your application, the smallest mast diameter would suffice (1.9" O.D.)
> and probably also the shortest mast length (2 ft.).
> You may need to find a creative way to attach the antenna to the steel mast.
> Maybe something with U-bolts.
> 
> You can call and talk to them if you want to pursue this and tell them what
> your application is and they should be able to make a recommendation.
> 
> These mounts typically run in the $300-$400 dollar range and then there are
> shipping costs (they are not light).  You could wind up spending more on
> this mount than you did on the antenna.
> 
> One other thing... When we used these, we put rubber matting under them to
> create a buffer between the roof material and the mount.  I would recommend
> you use something like this that is rated for outdoor use if you decide you
> want to use this type of antenna mount.
> 
> 73 & GL,
> Bob - KE2D
> 
> 
> -----Original Message-----
> From: sjra-members-bounces at mailman.qth.net
> [mailto:sjra-members-bounces at mailman.qth.net] On Behalf Of Karl KD2SSE
> Sent: Thursday, November 11, 2021 3:34 PM
> To: SJRA-Members at mailman.qth.net
> Subject: [SJRA-Members] Home Antenna Install
> 
> Hi,
> 
> I have a Diamond X50A (2m/70cm) antenna I would like to get mounted outside
> in some way.  Is there anyone in the club that would be able to assist me or
> can recommend a contractor that is a ham or familiar with ham radio antenna
> installs? 
> 
> I have a 2 story house and a small yard located in Voorhees.   I'm thinking
> something mounted to the roof or eave is probably the best option.  The coax
> would need to be run into the attic, I can take it from there.
> 
> Feel free to email me directly at
> KARL (at) KD2SSE (dot) NET
> 
> Thanks
> Karl
> KD2SSE
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