Rugged Radios Antenna Tuning / Cutting Charts RuggedRadios.com / (888)541-7223 1/2 Wave NGP Antenna 144-174 Mhz Freq Cut Length 144 44” 146 42-1/2” 148 41-1/2” 150 40-1/4” 152 39” 154 38” 156 37” 158 35-1/2” 160 34-1/2” 162 33-1/2” 164 32-3/4” 166 32” 168 31-1/2” 170 31” 172 30-1/4” 174 29-1/2” 5/8 Wave NGP Antenna 132-174 Mhz Freq Cut Length 132 55” 134 54-5/8” 136 53-5/8” 138 53-1/2” 140 52-3/4” 142 52” 144 49” 146 48-1/4” 148 47” 150 46-1/4” 152 45-1/2” 154 44-1/4” 156 43-1/4” 158 43” 160 42-1/4” 162 41-1/2” 164 40-3/4” 166 40” 168 39-1/2” 170 38-3/4” 172 37-1/2” 174 37-1/2” updated July 10, 2014