Hi All, I have a Larsen NMO 27B which I no longer want to use for a CB radio; brand new in its package. The place I brought it from wont take it back. Is there any chance I could re-tune it so it could operate on 144.390MHz? The specs are as followed: NMO 27B Frequency: 27-30 MHz. Gain: 0 dBd Type: 1/4 Wave Power: 200 Watts Base: NMO27BCO Black Whip: W490B Black Height: 53 inches (132 cm) Thanks!!