The HL-450B has a built-in auto band-select function. It uses a newly developed micro processor based technology, and works a smooth automatic operation when driven by the radio in either SSB or CW mode.
In addition, manual band setting is possible as well. It is designed to be “user friendly”. Since the HL-450B is compatible with our optional external remote controller (HRC-60), operation is possible from remote locations, if plugged into the socket at the rear panel.
The HL-450B is equipped with a hard-key terminal to make a smooth send / receive switching with the radio. Built-in ALC circuit helps suppress excessive output and avoid the signal distortion.
The HL-450B has various protection circuits such as for high antenna SWR, over drive, over current etc. When any abnormal condition is detected, operation is automatically shut down to prevent the failure. The large analog power meter is easy to read and the output can always be monitored.