Linear Amp Gemini 2 – 144MHz 300W Solid State Linear Amplifier

  • Solid state design
  • 300W output
  • Freescale MRFE6VP6300H LDMOS
  • Integral 50V Linear Power supply
  • Drive requirements 2.5-25W (specified at purchase)
  • Advanced cooling for MGM operation
  • Full protection for overdrive/swr/temperature
  • Switchable preamp output voltage on RX with bias tee option
  • N Type connectors on input and output
  • 0dBm predistortion SMA ouput on rear as an option
  • All aluminium chassis
  • Compact dimensions – just 270w x 300d x 120h mm
  • Weight just 10Kg
  • UK Manufactured by us here on the Welsh Borders

Price excl VAT: £874.17
incl VAT: £1,049.00



Designed, manufactured and assembled entirely the UK, the GEMINI linear amplifier is a solid state linear amplifier with 300W output available in 6/4m, 2m, 70cm and a 200W 23cm version.
Designed to fill a market gap between the low power outputs of transverters and smaller rigs and the 1kW plus amplifiers that not all users want or can afford the Gemini range combines low drive requirements with instant on solid state performance in a compact stylish package.

Now available as an option – the amplifier can now be specified with a rear panel 0dBm SMA socket for predistortion linearisation for use with the latest generation of SDR’s.

The GEmini 2 uses the Freescale MRFE6VP6300H LDMOS device for high performance and maximum ruggedness. This, combined with built in protection for overdrive, High SWR and over temperature ensures solid reliable performance at high outputs for long periods.

The 144MHz Gemini 2 also incorporates a fully sequenced front panel switchable 13.8v preamplifier supply on receive. This can be selected by the operator to be either an output voltage on the rear panel or a bias tee feed as required. The rer panel also has output for sequencing the rig as well as teh amp and preamp so can safely operate a changeover sequence for masthead preamps that do not have RF switching.

Furthermore GEMINI is a complete turnkey solution incorporating a complete 50V linear power supply so no external PSU is required.


Frequency coverage 144-148 MHz
Power output @ 1dB compression 300W
Power output @ -30dB IMD3 >250W
Input power 2.5-25W (specified when ordered)
Spurious outputs <-70dB wrt 300W
Input return loss >13dB
Efficiency (RF) >65%
RF Device 1 x Freescale MRFE6VP6300H
Protection Overdrive, SWR, Over Temperature
Relays Coaxial Output and Input
Metering RF output
Power requirements 230V AC  50/60Hz
Dimensions mm 270w x 300d x 120h
Weight 10Kg


Linear Amp Gemini solid state amplifier internal view


Linear Amp Gemini 4 70MHz solid state amplifier rear view

Download a Brochure HERE

Available on back-order

Input Drive Level Required  

OdBm rear panel SMA output

Front Panel Colour

Mains Input Votlage