KENWOOD TS 450-S * GENERAL COVERANGE IN TRANSMISSION * .....On the bottom board of the transceiver find the RF-UNIT (X44-1510-11). 1) Near the plugs numbered 9 and 10 , you will see the diodes D39 and D40. 2) Cut the two diodes D39 and D40. ......Now you can transmit from 1,6 Mhz to 30 Mhz continusly !!!!!.