Exception the 450 and 455 pairs for broadcast remote or news services may be either normal or reversed, ie 450 as the input and 455 for the output. MONIX > - 800-MHz = add 45 MHz > - 900-MHz = add 39 MHz > - UHF 450-470 = add 5 MHz > - UHF "T" 470-512 = add 3 MHz > - VHF = various Ham 420-450 +- 5 MHz Normally 220-225 -1.6 MHz 144-148 - 0.6 MHz (147 is + 0.6 MHz mostly) 50-54 +- 1 or +- 0.5 MHz