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  180W amplifier with pre-amp

The KL 405 is a 180Wmax 12V linear amplifier for use on the 10m Amateur Band, (or other HF bands with the use of a suitable Low Pass Filter). It requires a drive power of 1 to 10W in all modes.

The KL 405 features a six position output power selector via a front panel control and a RX preamplifier with electronic switching, which can be activated via a switch on the front panel. The V version comes with a 80mm heatsink mounted fan.

For full details download the instruction manual.

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New version with cooling fan

The KL 405 is a 180Wmax 12V linear amplifier for use on the 10m Amateur Band, (or other HF bands with the use of a suitable Low Pass Filter). It requires a drive power of 1 to 10W in all modes.

The KL 405 features a six position output power selector via a front panel control and a RX preamplifier with electronic switching, which can be activated via a switch on the front panel. The V version comes with a 80mm heatsink mounted fan.

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 full 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.