The HL-450B has a built-in auto band-select function. It uses a newly developed micro processor based technology for 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".
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 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 failure.
The large analog power meter is easy to read and the output can always be monitored.
Specifications
Frequency Range All HF amateur bands of 3.5 - 28MHz (including all WARC bands)
Mode SSB / CW / FM
Output Power SSB (PEP) / CW 400W max. 350W typ., 300W min.
RF Input 50W
DC Power Supply DC 13.8V 60A max.
Input / Output 50 ohms
Final Transistor THP-120 x 4
Cooling System Forced Air Cooling
Input / Output Connector UHF (SO-239)
Input / Output 50 ohms
Built-in functions
1. Send / receive switching terminal (hard key)
2. Protection circuit (antenna SWR, over-current, over-voltage, over-drive, over-temperature, band mis-set)
3. Output power meter
4. ALC terminal
5. External controller (HRC-60, optional parts) terminal
Dimensions (W) x (H) x (D) Approx. 300 x 100 x 342 mm Approx. 8.7 x 3.5 x 13 inches
Weight Approx. 5 kgs./ Approx. 11 lbs.
