PHILLIPS MICROTECHNOLOGY, INC.

A FLORIDA CORPORATION

1-888-828-8775      FAX 1-954-370-3600

PMI-2732WGF - 2 GHz Grid Antenna

Electrical:
1990-2110 Mhz: Beamwidth: ~12.8 degrees, Gain: ~ +22 dbi, f/b ratio (min): 22 db
2200-2350 Mhz: Beamwidth: ~11.9 degrees, Gain: ~ +23 dbi, f/b ratio (min): 22 db
2450-2500 Mhz, Beamwidth: ~10.7 degrees, Gain: ~ +24 dbi, f/b ratio (min): 22 db
Gain ratings based on winds less than 80 Mph. Typical wind survival: 125 mph
50 Watts RMS Transmitter Power Handling Capability, ~1.2:1 VSWR

Mechanical:
Mounting: 0.75” to 2.0” dia. pole
Wind load ~1.2 sq ft
Coating: Baked Epoxy Fiber
Hardware: Stainless Steel
Polarization: Linear: Vertical or Horizontal, depending on mounting.

 
Weatherproof Your RF Connectors

            Water (and ice) can damage your system, and you may gradually (or suddenly) lose range, along with your LNA or antenna connector.  Water will find its way into connectors and feed lines by capillary action between the jacket (outer cover) and the braid, or copper underneath. Water travels into and through connectors, antenna feeds, and electronics.  Moisture in lines is the chief cause of poor range and noisy signals.

 Connections in mid-air

            For antenna pigtails and other "flying" connections, completely seal the connection and at least 1” past the connector.  Be sure to clamp the line to the mast.  Don't let it flap in the breeze, or have the weight of ice pull the wire from the connector! On bulkhead connectors, such as found on our LNAS, use “Coax Seal” starting 1" ahead of the connector, right up to, and including the case.  This will prevent weather damage, ENG range problems, and expensive tower service.

 Grounding

             Use no less than heavy one inch flat braid (battery type, easy-to handle), heavy copper strapping, or welding cable for your ground.  A lightning strike can produce thousands of amps.  If it isn't diverted away from the LNA, it will pass THROUGH it!  Start with a good ground on your antenna.  Don't assume it has a good ground because it is mounted on your tower.  Take the time to have someone check it out. Scrape paint away from the tower legs to obtain a good ground.  To keep a good ground, be sure to seal the tower leg and clamp hardware by painting it with a good quality zinc paint, and then your color coat.  CHECK YOUR TOWER GROUND!

            Steerable antennas should have a strap connected from the antenna mast or mount, to the point where the rotor is mounted, ie: across the rotor.  This prevents lightning from taking out your rotor (especially bearings), control circuits, and LNA.  All grounds must run at no greater than a 45 degree angle to vertical.

            Scrape paint away from the LNA box and the mounting surface on the tower, so that the bolts will make a good ground (both R.F. and D.C.). Don't rely on a tower plat form for a ground.  If tower work is done, you may lose your ground.  If you must mount your LNA on a platform, ground your LNA to the platform, then ground the platform to a tower leg, using heavy braid or strapping.

            Keep in mind that the grounds you provide must handle thousands of amps for a direct lightning strike  ....number 10 wire is out of the question!