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R 900-7/..., R 900-10/..., R 900-14/...

Directional Antennas with 7, 10 and 14 dBd Gain for the 900 MHz Band

  • These antennas are 4-, 8- and 18-element Yagi antennas with 7, 10, and 14 dBd gain, respectively.
  • When mounted for vertical polarisation the horizontal coverage is R 900-7: 74°, R 900-10: 52° and R 900-14: 32°.
  • These Yagis incorporate baluns optimized for wide bandwidth and accurate matching.
  • The entire balun unit and feeder cable inlet are completely sealed in a polythene moulding ensuring permanent waterproof connections. The antennas are supplied with a 0.8 or 3 m “tail” of RG 213 terminated with an N-female connector. (See specifications).
  • Radiating elements, supporting booms and adjoining metal castings have been constructed in high quality aluminium alloys to prevent corrosion. All metal parts are DC-grounded.
  • The antennas are designed for back mounting and are provided with rear extended booms.
  • These antennas can be stacked and fed in phase with a matching harness for increased gain.
  • A mast clamp for fixation on 30 - 58 mm diameter mast tube is enclosed.

ORDERING DESIGNATIONS 

TYPE  ANTENNA TYPE FREQUENCY PRODUCT NO.
R 900-7/l 4-element Yagi 7 dBd 820 - 900 MHz 7385900
R 900-7/h 4-element Yagi 7 dBd 870 - 960 MHz 7385900
R 900-10/l 8-element Yagi 10 dBd 820 - 900 MHz 7175890
R 900-10/h 8-element Yagi 10 dBd 870 - 960 MHz 7175872
R 900-14/l 18-element Yagi 14 dBd 820 - 900 MHz 7176870
R 900-14/h 18-element Yagi 14 dBd 870 - 960 MHz 7176890

SPECIFICATIONS

ELECTRICAL      
MODEL R 900-7/… R 900-10/… R 900-14/…
ANTENNA TYPE 4-element Yagi 8-element Yagi 18-element Yagi
FREQUENCY l: 820 - 900 MHz
h: 870 - 960 MHz
IMPEDANCE 50 Ω
POLARIZATION Vertical or horizontal
GAIN 9 dBi 7 dBd 12 dBi 10 dBd 16 dBi 14 dBd
FRONT TO BACK RATIO 16 dB 20 dB 25 dB
HALF POWER BEAMWIDTH E-plane: 56°
H-plane: 74°
E-plane: 42°
H-plane: 52°
E-plane: 23°
H-plane: 32°
BANDWIDTH 80-90 MHz
SWR ≤ 1.5
MAX. POWER 150 W
ANTISTATIC PROTECTION All metal parts DC-grounded
(Connector shows a DC-short)
MECHANICAL  
TEMP. RANGE -25°C → +60°C
CONNECTION 0.8 m tail of
RG 213 terminated
with type
“N” female connector
0.8 m tail of
RG 213
terminated
with type
“N” female connector
3 m tail of
RG 213
terminated
with type
“N” female connector
WIND SURFACE 0.034 m² 0.047 m² 0.091 m²
WIND LOAD 43 N @
160 km/h
59 N @
160 km/h
119 N @
160 km/h
COLOUR “Aluminium”
MATERIALS Elements/Boom/Saddle clamps: Aluminium alloys.
Fittings: Stainless steel.
Bracket: Hot-dipped galvanized steel
BOOM LENGTH Approx. 0.69 m Approx. 0.97 m Approx. 2.04 m
BOOM DIA. 25.4 mm
MAX. ELEMENT LENGTH 0.21 m
DIA. OF ELEMENTS 9.5 mm
WEIGHT Approx. 2.1 kg Approx. 2.8 kg Approx. 4.2 kg
MOUNTING Supplied with mast bracket suiting 30-58 mm dia. mast tube

TYPICAL RADIATION PATTERN (E-PLANE)

If the antennas are mounted for vertical polarization these curves show the radiation patterns in the vertical plane.

 

TYPICAL RADIATION PATTERN (H-PLANE)



If the antennas are mounted for vertical polarization these curves show the radiation patterns in the horizontal plane (horizontal coverage).

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