ASK ABOUT OUR SPECIAL SHIPPING RATES ON ORDERS OVER $1000
Language
English
Gain is provided for one polarization and is equal in circularly polarized antennas for both horizontal and vertical components. Gain will be reduced if null fill, beam tilt, special h/v ratio, or special wavelenght spacing is provided. Antenna radiation aperture is the distance from the center of the top bay to the center of the bottom bay. Five ft(1.6mt.) of pipe is required above the top of the top bay and below the bottom of the bottom bay. Total tower space recommended allows ten feet (3.1) of clear tower space above and below the pipe to protect from pattern interference by other antennas.
Windloads and weight tabulations assume 98 mhz. And include bay, interbay feedline, input connection, and power dividers.
Antenna windloads are calculated for 112 mph (180kph) - 50 psf (244kg/m2) for flats and 33 psf(161 kg./m2) for rounds - per EIA standard RS-222-C. The surface area is calculated per EIA standard RS-222-f.
To convert figures o metric, multiply lb by 0.4536 for kg. Divide ft by 3.281 for meters. Multiply ft2 by 0.0929 for m2. To convert figures to imperial, divide kg by 0.4536 for lb. Multiply meters by 3.281 for ft. Divide m2 by 0.0929 for ft2
Electrical Data
Frequency range |
87.5÷108 MHz |
Impedance |
50 Ohm |
Connectors |
N or 7/16” female or 7/8” EIA |
Max Power |
800W (N) – 2KW (7/16”) 3KW (7/8” EIA) |
VSWR |
≤ 1.4:1 |
Polarization |
Circular |
Gain |
Refer to table |
Pattern |
Omni directional ±1.5 dB in free space |
Lightning protection |
All metal parts DC grounded |
Mechanical Data
Dimensions |
1560 x 1150 x 1150 mm |
Weight |
13 kg |
Wind surface |
0.19 m2 (side) 0.13 m2 (front) |
Wind load |
31.1 kg (side – wind speed at 160 km/h) |
Max wind velocity |
220 km/h. |
Materials |
External parts: Stainless Steel Internal parts: aluminum treated |
Mounting |
With special pipe clamps 50¸110 mm dia. |