Mast and Pole Mounting
Mast options
- J-pipe mounts: Common TV antenna hardware. Good for moderate antennas on walls or chimneys.
- Galvanized conduit: 1-1.5" Schedule 40 steel conduit. Strong, affordable, easy to work with. Good for masts up to 4-5 meters.
- Telescoping push-up masts: Aluminum sections. Easy to deploy. Common for temporary or semi-permanent installs.
- Non-penetrating roof base: A weighted base (50+ lbs of paving blocks) holds a mast on a flat roof without drilling.
Guy wires
Masts over 3-4 meters free-standing need guy wires at 120 degree intervals. Use stainless cable or UV-resistant rope. Guy at 2/3 height and near the top.
Grounding and lightning protection
Ground the mast base with a #8 AWG copper conductor to a driven ground rod. Install a coaxial lightning arrestor rated for 915 MHz at the building entry point and bond to building ground.
Key rules
- Mount antenna as high as practical, clear of obstructions
- Keep the coax run short by mounting the radio enclosure close to the antenna
- Use stainless steel hardware outdoors to prevent galvanic corrosion
- Never power on the radio without an antenna connected - transmitting into an open port can permanently damage the PA
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