KL 203 Linear Amplifier

The RM Italy KL203 is a high-performance 12V linear amplifier specifically engineered for the 28-29.7 MHz frequency range. Operating with minimal drive power requirements of just 1-10W, this unit delivers an impressive 100W (MAX) output boost for your 10-meter amateur mobile communications. Compatible with AM-FM-SSB transmission modes, this compact RF power amplifier enhances signal strength and transmission quality for serious radio enthusiasts requiring professional-grade performance in mobile applications.

Compact high-performance RF amplifier designed for 10-meter amateur radio operation.

• 🔧 Frequency: 28–29.7 MHz
• 🔧 Power Supply: 12–14 V DC
• 🔧 Current Draw: Max 10 A
• 🔧 Input Power: 0.5–10 W
• 🔧 Output Power: Up to 100 W
• 🔧 Input VSWR: 1.1–1.5:1
• 🔧 Modes: AM / FM / SSB
• 🔧 Fuse: 12 A
• 🔧 Switching: VOX (automatic TX switching)
• 🔧 Protection: Reverse polarity

⚠️ Important Notes

• ⚠️ CB (27 MHz) use is prohibited. This amplifier is not legal for use on the CB/11-meter band.
• ⚠️ Legal Use: Operator must comply with local RF amplifier laws and licensing requirements.
• ⚠️ Vehicle Use: May only be operated when vehicle is stationary.
• ⚠️ CE Compliance: Only when paired with the RM 27/586 Low Pass Filter between the amplifier and the antenna.
• ⚠️ Warranty: 12 months Manufactures Warranty (excludes final transistors and cosmetic damage) Note: RM Italy is located in Italy.

✅ Suggested Setup

• ✅ Transceiver: 5–10W output on 28–29.7 MHz
• ✅ Amplifier: KL 203
• ✅ Filter: RM 27/586 Low Pass Filter
• ✅ Antenna: Tuned for 10-meter band
• ✅ Power Supply: 12V regulated, minimum 12A

For licensed amateur radio use only. Not intended for unauthorized transmissions or frequencies outside the 10-meter band.

🇨🇦 Looking to Buy in Canada?

This product is available through Fleetwood Digital, a trusted Canadian source for amateur radio and CB equipment. Shop with confidence — no cross-border delays, no duties, and expert local support.

Please note, linear amplifiers require appropriate licensing to install and operate. These units are not designed for a 100% duty cycle. All units are fully tested and inspected before shipping; however there are no returns and a limited (Manufacturers) warranty applies. Setup and testing should only be performed by qualified individuals.