3 Star JRMHDW Non-Penetrating Flat Roof Antenna Mount BASE ONLY-No Mast Provided
3 Star Inc
Made in the USA!
The JRMHDW Kit uses Customer Supplies Mast Pipe - Drill to Fit
Mast Dimensions Supported - 2“ - 3" STD. Pipe DIA (2-3/8 O.D. - 3-1/2 O.D.) x 5' - 10' HGT
The ROHN JRM is a non-penetrating, 5' square ballast type roof mount that supports a 5’-10' Mast Pipe with up to 12 standard concrete blocks as ballast. The JRM is used in cellular, PCS, broadband and other applications.
The base mount is Hot dip galvanized for corrosion protection and goes together quickly.
This Item Ships LTL Freight ONLY.
Height and Antenna Loading capability are dependent upon ballast weight to counter the tip-over moment of the Windspeed rating desired. In addition to the Windspeed Loading Data found under the "Specification" tab (if Available), You need to Consult an Engineer to determine the Building Code Requirements and Load Bearing Capacity of the roof structure where you will be installing this mount. It is Important to choose a Mount and Mounting Location with a Picture of the Finished Installation in Mind. Be Sure to First select a location that lends itself to applying a Load without Compromising the Integrity of the Material you place the mount on top of; i.e. roof membrane, covering, decorative cover, etc., or the Structural Members beneath. Next consider the Location over a Lifetime of Adjustments, does it lend itself to modifications in Height or Direction? Larger Antennas increase the surface area presented to air movement and thus, Wind-load does increase. As the height of the mast increases from Its last attached point on the structure, the torque applied in cantilever towards the tip-over moment also increases with Antenna off-center Weight and Wind-Load EPA (Effective Projected Area), requiring a more substantive Downward Force and/or Load Dissipation; i.e. supplemental Down-guys may be required as to keep ballast weight within Load-bearing capacity. Keep the Distance Minimal from the Antenna to the Equipment you feed, as to minimize loss and the need for Amplification.
A Retention Tether SCK150 (Safety Cable Kit) is required for Commercial Installations to mitigate Loss and Damage to Property, Further, the FRM-PAD or FRM-MAT is recommended for all installations to prevent slippage, distribute weight more evenly and prevent damage to the roof surface
Pitched and Roof Peak Non-Pen Mounts
This Non-Penetrating Pitched Roof Mounts is constructed of Pre-Galvanized Steel and uses standard concrete blocks. Accommodates a wider range off Foot-plates for use to mount AU9S Dish, DirecTV 5 LNB Dish AU9 Slimline, WildBlue, SuperDISH, DirecTV Ka/Ku (HD Dishes), Satellite Dishes compatible with the SuperDMount, DirecTV AT9, DBS Direct Broadcast Satellite and FTA Free to Air using a 2.00 inch OD Outside Diameter Mounting Pipe. In addition, it can be used in mounting some smaller Microwave PCS, Cellular, Broadband Wireless, Wireless Internet and Two Way Antennas compatible with 2 inch OD Pipe Mounting. I have enjoyed Installing this product line for Dish applications from Business and Internet on the tops of tall buildings to HD TV and zillions of channels for in-home use. And as with all items in this Product Line, Screws and Pitch Pads are included for Bolt-down versus Ballast applications. The Length of the mast is 30 inches based on engineering that incorporates consideration for typical Satellite Antenna Wind-load versus the Ballast that would keep either on target with minimal deviation and flex. As with all Ballast mounts, Structural Engineering consultations are recommended for all Roof Applications.
