The UHF18-900 18 element yagi is very robust and reliable and is manufactured to a high degree of Telecommunication specifications. The dipole driven element and reflector elements are encapsulated in a sealed reinforced ABS enclosure and potted with epoxy resin. These antennas can also be etch primed and powder coated in various colours to add further protection against atmospheric pollutants such as acid rain, sulphur and sea spray.

Gain over 1/2 wave dipole  15.0 dB
V.S.W.R. Better than 1.5:1 over the operating band
Maximum input power rating 150 Watts
Input impedance 50 Ohms
Band width +/- 3% of the centre frequency
Polarisation Vertical or Horizontal
Half power beam width E plane 23 degrees     H plane 26 degrees
Front to back ratio 25 dB's typical
Connection 300mm of RG213 fitted with N-Type socket and PVC sleeve
Support boom 1" x 10 swg aluminium alloy tube - HE30TF
Radiating elements 3/8" x 16 swg aluminium alloy tube - HE9TF
Castings Kemloc aluminium alloy
Insulator ABS sealed box potted with compound
Nuts & bolts 18/8 stainless steel and A2 Nyloc nuts
Weight  3.4 kgs    
Windloading at wind velocity of 160 kph 17.2 kgf

Click here to download product PDF

Radio Structures Ltd - Antenna

VHF Antenna - UHF Antenna - Antenna Array - Log Periodic Antenna - Corner Reflector Antenna - Colinear Antenna - End Fed Dipole - Yagi Antenna - Centre Fed Dipole - Down Fire Antenna

Tel: 01604 790005 - e-mail: sales@radiostructures.com