RM HLA150V Plus – 1.8-30 MHz (150 W) HF Amplifier with Fans


A full range all mode HF amplifier with automatic or manual band switching, the RM HLA 150 plus two cooling fans. Includes electronic switching, micro processor, SWR & thermal protection, watt meter, band selector. The built-in protection circuitry automatically sounds and or bypasses the amp in situations where damage could be caused to the circuitry or when spurious emissions are excessively high due to incorrect band selection.


Compact and handy linear power amplifiers for all HF bands from 1.8 to 30 MHz, with approx. 150 W output power. These amplifiers work as real linear amplifiers and not as a C-class device, as many simple CB-type amps do. A special feature of the amplifiers is a six-way output low-pass filter, which is switched automatically by a microprocessor. Additionally, this filter can be switched manually (e.g. when receiving).

The relative output power is shown on a bar graph on the front panel. The amplifiers have a protection circuit against high SWR. Transmit/Receive switching can be done either by HF Vox or a PTT cable. The controls on the front panel allow a selection of the Vox hold time, additionally, a 3dB input attenuator can be selected, which reduces the amplification by about 50%.

Connectors: IN/OUT 2x PL, PTT: cinch socket, active low.

The model HLA-150V-Plus has two temperature-controlled fans, good for continuous operation.


  • 1.8 – 30 MHz All-Mode All-Band
  • Electronic switch
  • PTT input
  • Watt meter
  • 6 Low-pass filter manual or automatic selected
  • Forced multispeed ventilation


Frequency1.8 – 30 MHz
Input Energy/Power24 A
Input Power1 – 10 W
Input Power SSB1 – 20 W
Output Power150 W Max
Output Power SSB250 W Max
ModeAM / FM / SSB
Fuse2 x 12 A
Size170 x 225 x 62 mm
Weight2 kg


Additional information

Weight2.5 kg