LINEAR AMPLIFIERS MADE IN THE UK

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CHALLENGER : PIONEER : DISCOVERY : GEMINI

Linear Amp Gemini 4 - 50/70MHz DUAL BAND 300W Solid State Linear Amplifier

Linear Amp Gemini 4 70MHz linear amplifier front view
  • 50/70MHz Dual Band Solid state design
  • 300W output
  • Integral 50V Linear Power supply
  • Drive requirements 2.5/10/25W (specified at order)
  • Advanced cooling for MGM operation
  • Full protection for overdrive/swr/temperature
  • All aluminium chassis
  • Compact dimensions - just 270w x 300d x 120h mm
  • UK Manufactured by us here on the Welsh Borders

Designed, manufactured and assembled entirely the UK, the all new GEMINI 4 linear amplifier is a solid state linear amplifier with 300W output on both 50Mhz and 70MHz bands.


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.

With an RF section designed exclusively for us by Chris Bartram GW4DGU (of Mutek fame) Gemini uses the latest Freescale MRFE6VP6300HR3 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 design arcitecture of the RF section gives fully automatic 50MHz and 70MHz operation with no front panel band switching needed.

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

Specifications

Frequency coverage 50-54MHz & 69-72 MHz
Power output @ 1dB compression 300W
Power output @ -30dB IMD3 >250W
Input power

3-25W (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


Linear Amp Gemini solid state amplifier internal view

Linear Amp Gemini 4 70MHz solid state amplifier rear view

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