Linear Amp Gemini 70 – 432MHz 300W Solid State Linear Amplifier

  • Solid state design
  • 300W output (1dB compression point @ 280W)
  • Freescale MRFE6VP6300H LDMOS
  • Integral 50V Linear Power supply
  • Drive requirements 5-20W (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
  • 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: £1,082.50
incl VAT: £1,299.00



Designed, manufactured and assembled entirely the UK, the GEMINI linear amplifier is a solid state linear amplifier with nominal 300W output available in 6/4, 2 and now 70cm  versions.
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.

The Gemini RF section 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 432 MHz Gemini 70 also incorporates a 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 coax bias tee feed as required.

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


Frequency coverage 430-440 MHz
Power output @ 1dB compression 280W
Power output @ -30dB IMD3 >250W
Input power 5-20W (specified when ordered)
Spurious outputs <-70dB wrt 300W
Input return loss >20dB
Efficiency (RF) >55%
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


Gemini 70 RF & LPF Board


Available on back-order

Drive level required  

Front Panel finish  

Mains Input Voltage