12 Volt

All the amplifiers listed below are for use on a 12V supply.
If you require one for use in a truck, please ensure you either have a large enough voltage dropper or choose one of our 24V amplifiers.
The output power quoted for SSB is maximum PEP Power.
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RM KL35  35W amplifier

A small amplifier for AM/FM only - can not be used on SSB.

Although the amplifier does not have a switch on it, it does have a built-in relay so that you can switch it on/off by putting a switch in the power cable. This allows you to hide the amp away.

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A compact amplifier with on/off switch, suitable for use on FM, AM and SSB.

Relay switched, which minimises insertion loss, and can be bypassed using the on/off switch on the front of the amp.

Selectable for AM/FM or SSB.

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RM KL 203  100W amplifier

Compact mobile amplifer with on/off switch.

Mosfet amplifier with maximum output of 100W  (typical output 80W).

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RM KL 203p  100W with pre-amp

Compact mobile amplifier with switchable pre-amplifier.

Mosfet transistors.

Neither the output nor the pre-amp gain are variable.

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RM KL200  100W amplifier
A popular compact amplifier giving a maximum output of 100W on AM/FM and 200W PEP SSB.
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RM KL 200p  100W with pre-amp

Compact mobile amplifier with switchable pre-amplifier.

Neither the output nor the pre-amp gain are variable.

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A high power broadband amplifier with fixed output power.

The output is a maximum 150W AM/FM and 300W PEP on SSB).

For more details download the instruction manual.

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Delivery 2-3 days

A high power broadband amplifier with fixed output power and 26dB RX preamp.

The output is a maximum 150W AM/FM and 300W PEP on SSB).

For more details download the instruction manual.

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RM KL 405  200W amplifier with pre-amp

A high power broadband amplifier with variable output power and switchable pre-amplifier (not variable), this is a replacement for the KL400 (RM351p).

The features are all the same as the KL400, but the amplifier uses new transistors, has an updated look to it, and the power cable connection is improved on the rear.

The output can be adjusted in 6 stages, from approximately 50W minimum to 200W maximum (AM/FM).

For more details download the instruction manual.

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New version with cooling fan

A high power broadband amplifier with variable output power and switchable pre-amplifier (not variable), this is a replacement for the KL400 (RM351p).

The features are all the same as the KL400, but the amplifier uses new transistors, has an updated look to it, and the power cable connection is improved on the rear.

The output can be adjusted in 6 stages, from approximately 50W minimum to 200W maximum (AM/FM).

For more details download the instruction manual.

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A high power broadband amplifier with variable output power and switchable pre-amplifier (not variable), this is a replacement for the KL500.

The features are all the same as the KL405, but the amplifier uses Mosfet transistors.

The output can be adjusted in 6 stages, from approximately 60W minimum to 250W maximum (AM/FM).

Note: new stock is now in a black case.

For more details download the instruction manual.

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HF Professional Linear Amplifier

A full range HF amplifier with automatic or manual band switching.

Ideal for use with the Yaesu FT817 & FT897 and Icom 703, but suitable for use with any low power HF radio.

  • Microprocessor controlled band switching
  • 6 internal low pass filters
  • LED band indicator
  • Baragraph LED output meter
  • Auto TX/RX switching
  • SSB delay switch
  • High SWR protection
  • Over temperature protection
  • High/Low output level

RM Power Plug

RMP
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A replacement original power connector for various high power RM amplifiers.

Ideal if you want to make a spare lead to use in more than one location.

Used on HLA300V, HLA305, HLA305V, KL405, KL405V, KL503, KL503HD, KL505, KL505V, KL506, KL703, KL805, LA250, LA250V and others.