Radio Link Antennas
General. The LOG 3B and LOG 4B Directional Antennas are designed for short distance FM Radio & TV microwave links purposes in 170 – 230 MHz (LOG 3B) and 300 – 470 MHz (LOG 4B) frequency bands. These antennas are made with non-corrosive aluminium alloy and composed of 10 elements and a mounting bracket.
Effective cost. Good performances at effective cost is the main feature of this antenna.
Horizontal or Vertical polarization are possible with the standard mounting brackets.
Instant installation. The reduced overall dimensions and the low weight permit an easy installation even on light poles.
Lightning resistance is guaranteed by the DC ground potential of the entire antenna.
Radio Link Antennas
R.F. Data
Frequency Range:
LOG 3B 170 - 230 MHz
LOG 4B 300 – 470 MHz
Bandwidth Broadband
Polarization Horizontal or Vertical
Connector N female
Max. power handling capability:
LOG 3B 300 W
LOG 4B 300 W
Gain (at mid band, ref. to l/2 dipole):
LOG 3B 9.3 dBd
LOG 4B 9.4 dBd
Impedance 50 W
Front to back ratio:
LOG 3B >18 dB
LOG 4B >17 dB
Lateral wind load (ref. 150 Km/h):
LOG 3B 19 Kg
LOG 4B 19 Kg
Grounding Via clamps
Horizontal Beamwidth (at -3 dB, at mid band):
LOG 3B 23°
LOG 4B 23°
Vertical Beamwidth (at -3 dB, at mid band):
LOG 3B 27°
LOG 4B 26°
Mechanicals
Materials Aluminium
Pole diameter 25 – 55 mm (others on request)
Dimensions (HxL):
LOG 3B 985x470 mm
LOG 4B 972x470 mm
Weight:
LOG 3B 1.8 Kg
LOG 4B 1.7 Kg
ITEL S.r.l. TELECOMUNICATIONS AND BROADCASTING SERVICES Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY Tel. +39 0434 997667 - Fax. +39 0434 997687