RM KL-703 Linear Amplifier 25–30MHz, 500W, AM/FM/SSB/CW, Dual Fan

The RM KL-703 is the highest-power amplifier in the RM KL range, delivering up to 500W output across AM, FM, SSB, and CW modes from the 25–30MHz band (CB and 10m). It accepts a wide drive range of 1–35W, making it compatible with both low-power and higher-power transceivers. Two heatsink-mounted cooling fans ensure sustained high-power operation, and a three-position output power selector on the front panel allows precise power control. A built-in RX preamplifier with electronic switching is activated via a front panel switch.

Note: Always ensure your antenna system is correctly matched (SWR within specification) before using a linear amplifier. Check local regulations regarding the use of linear amplifiers on amateur and CB frequencies.

Key Features

• Frequency: 25–30MHz (CB and 10m)
• Output power: 500W max
• Input power: 1–35W (all modes)
• Modes: AM, FM, SSB, and CW
• Three-position output power selector (front panel)
• Built-in RX preamplifier (switchable via front panel)
• Dual fan-cooled — two heatsink-mounted fans
• Power supply: 13.8V DC ±1V, 60A
• Input current: 50A max
• Fuse: 4 × 15A