Triax Yagi - Digital band 18 Element All of the YAGI aerials are provided with the snap lock dipole house, made from UV-resistant plastic, which protects the new and improved balun with capacitive signal transfer against corrosion. The Yagi 18 for New Zealand is for Ch 21-69 channelized aerial is designed for the highest gain and F/B ratio within a narrow frequency range. Yagi 18 is available in channelized versions Ch31-34 , 35-38 and 63-69 please enquire about these options  It simultaneously enhances the wanted and rejects the unwanted signals giving superior reception quality. The aerials are provided with adjustable elevation mast brackets designed for masts up to Ø60 mm. Yagi 18 w. optional support boom Technical data Yagi 18 Elm. 2131415161 2 4 6 8 10 12 14 16 18 69 Ch Gain Ch. 21-69 Yagi 18 elem. Type Art. No. Yagi 18  107368 Channel 21-69 Band BIV/V Elements pcs. 18 Gain dBi 14.5 Front to back ratio dB 25 Beamwidth  hor. deg. ( o ) ± 18 Windload N 59 Weight kg 1.05 Material Alu. Dimensions                 length                              width mm mm 1446 420 Connector F-con Remarks