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Two compact black mobile linear amplifiers side by side

RM Italy

RM Italy KL 203P Mobile Linear Amplifier 2-pack

SKU CH-DVNH-2EA2M

Two mobile linear amplifiers deliver up to 100W AM/FM and 200W SSB output with 26dB gain for 20–30MHz radios

  • Product typeAmplifiers
  • Two amplifiers in one order for flexible mobile setups
  • Up to 100W AM/FM and 200W SSB output for strong signals
  • 26dB gain pre-amplifier boosts weak radio input effectively
  • Operates on 12-14V DC with 12A fuse for vehicle power
  • Requires antenna SWR of 1.5:1 or lower for safe operation

Two-unit linear amplifier pack

This pack contains two RM Italy KL 203P mobile linear amplifiers built for 20-30 MHz mobile radios. Each unit accepts 0.5W to 10W AM/FM or 1W to 20W SSB input and delivers up to 100W AM/FM and 200W SSB output. A 26 dB gain pre-amplifier stage prepares the signal before final amplification. The pair suits operators who want identical units for primary and backup installations.

Thermal behaviour under continuous transmission

The amplifiers run on 12V to 14V DC and are fused at 12A per unit. A switchable SSB delay relay manages the transmit-receive changeover to reduce hot-switching stress during long key-down periods. Dual-colour red and green function LEDs give immediate visual confirmation of operating mode. Sustained output depends on maintaining the required antenna SWR of 1.5:1 or lower to prevent reflected-power heating.

Installation checks before ordering

Verify that your radio’s drive level falls within the 0.5W to 10W AM/FM or 1W to 20W SSB input window. Confirm the vehicle electrical system supplies a stable 12V to 14V DC under load and that the antenna system presents an SWR of 1.5:1 or lower across the operating band. Ensure you have space and wiring capacity for two separate amplifiers each drawing up to 12A. Buyers needing a single amplifier or higher drive-level tolerance should consider other options.

How it compares

Measured against everything we stock in Car Audio Amplifiers, at today’s prices. Recalculated every night.

Price $142.99
Cheaper than about 68% of the 158 comparable items (median $225.49).

Specifications

Product
Product typeAmplifiers

Questions about this item

How much current does each KL 203P draw on a 12 - 14V DC system when running all day?

Each unit is fused at 12 A, so continuous draw stays within that limit on a 12 - 14 V DC supply.

What radio power and antenna match are needed to drive the KL 203P?

The amp accepts 0.5 - 10 W AM/FM or 1 - 20 W SSB input and requires an antenna SWR of 1.5:1 or lower.

Will the KL 203P work with my older 20 - 30 MHz mobile radio?

Yes, it is designed for QRP radios and other 20 - 30 MHz mobile sets, providing up to 100 W AM/FM and 200 W SSB output.

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