These simple, low-cost, broadband horizontally polarized antennas are designed for medium to long-range point to point or sectorized transmission or receiving applications.
FEATURES / BENEFITS
Characterized by an increase in gain and directivity when operated within the higher frequency band, the ST series provides an economical option to a full horizontal Log Periodic Dipole design.
The antenna is comprised of two sloping wires resistively terminated at the center point of the vee near ground level. The apex of the vee is supported by a suitable mast while the antenna is fed via a balun transformer at the masthead.
The ST330 model is available as an ST330S version which has a much reduced footprint for applications where the ground area may be an issue.
The ST series is available with or without mast systems of which two versions are available: Tubular Aluminium (MA): Triangular galvanized steel for high wind speed sites (MS).
For detailed model specifications and ordering information please contact RFS.
Refer to graph
Elevation Radiation Pattern
Refer to plots
Azimuth Radiation Pattern
Directional - Refer to plots
<2.5:1 max, <2:1 typical
Maximum Power Rating
0.25 average, 1 PEP 1 average, 4 PEP 5 average, 20 PEP
N-type socket (0.25kW)
N-type socket (1kW)
7/8" EIA (5kW)
Antenna Ground Dimension
100 (328.1) Vee length, 80 (262.5) Vee width *Note 1
50 (164.05) Vee length, 50 (164.05) Vee width *Note 1
80 (262.5) Vee length, 63 (206.7) Vee width *Note 1
Mast Guy Radius
Wind Survival Rating (No ice)
160kmh (100mph) with RFS Series MA mast *Note 2 230kmh (143mph) with RFS Series MS mast *Note 3
Material - Mast
MA Mast - Aluminium MS Mast - Galvanised steel
External Document Links
Note 1. Additional space must be allowed for main mast guys
Note 2. Calculated in accordance with AS1170-1981, Part 2, "SAA Loading Code Wind Forces" and AS1664-1975, "SAA Aluminum Structures Code"
Note 3. Calculated in accordance with AS1170-1981, Part 2, "SAA Loading Code Wind Forces" and AS1250-1981 "SAA Steel Structure Code"