ROHN WM18D Antenna Wall Mount 18 inch Y Style Double Brackets for 1.25 to 2.75" OD Mast
ROHN
Made in the USA!
The ROHN WM18D is a Hot Dip Galvanized 14 Gauge Steel Heavy Duty Bracket Set of (2) Double "Y" Style Brackets with Anti-Twist Feature, One with a Vertical Brace Strut on the Bottom Bracket, with Hardware Included for an 18 inch Standoff Wall Support of Light to Medium Duty Antennas on Mast Poles from 5 to 10 feet long and from 1.25 to 2.75 inches in Outside Diameter for Off-air and OTA TV, UHF/VHF Radio, Remote Telemetry Control and Monitoring Stations, Cellular Date Gateways, WiFi, Wireless Internet, Receivers, Boosters and Repeaters.(Mast Not Included)
These mast mountings are typical and generally require the cantilever distance between the mounts be one quarter (1/4) to one third (1/3) of the mast length depending on Wind Load, starting from the bottom with 2 foot between brackets being a minimum distance. All Masts greater than ten feet in length, and/or 2 inches or greater in O.D. should be based upon and from the ground in rising up to the desired height.
Also for Telescopic Mast Poles comprised of 1.25", 1.50", 1.75", 2.00" and 2.25" Tubes nested together and then extended, these wall mounts can supplement structural support but are not designed to take the place of a Base in Supporting the weight of the Mast off the ground or guying. Be sure and check that the Tube segments you wish to wall mount will fit within the Outside Diameter Window specified that the Brackets will accommodate. Set screw installation may require some field drilling.
Manufacturers recommend that ALL masts above 10 feet from their uppermost support be Guyed
With more height in your installation, Grounding/Bonding is a recommended consideration.
In-line Drop Cable Attenuators
In-Line Attenuators that can Drop Signal Down to Acceptable Levels and Force Impedance match. Some are Power Passing. Most Attenuators Now-a-Days are made of Integrated Circuit Equivalents of Resistors and Capacitors that made up the RC Networks of Yesterdays Pads. Because of this Fact, You will Find that the Actual Loss may vary across the Bandwidth for different reasons and values as compared to Yester-Years Models. I have always found it best to add Attenuation in Increments until reaching the appropriate amount, and then substituting for the Total Value with ONE Pad of equal value. Multiple Attenuators in Series may have Un-predictable and Un-controllable Affects upon each other in Reactance, and are Prone to RF Leakage as Stress upon the Connectors may Compromise the Shield Integrity.
