The Four Metres Website

The Four Metres Website

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  • Home
  • Operating
    • Aircraft Reflections and Flutter on 4m by Ross G6GVI
    • Awards
      • IRTS 70MHz Awards by Dave EI3IO
    • Bandplan
    • Beacon list
    • Distance records
    • Getting on 4 m
    • History
      • History of 4 m
      • International Frequency Allocations in the International Geophysical Year by Ivan Stauning OZ7IS
    • International bandplans
    • Links
  • Firsts
    • Rules
    • Submit first
    • View firsts
  • Equipment
    • Amplifiers
      • Amplifier links
      • 300 W PA Using 3 x RD100HHF1 by Sergey EX8MLE
      • 300w PA using a MRF300AN transistor by Sergey EX8MLE
      • 50w Power Amplifier by Peter SP2DMB
      • Microwave Modules MML 144/100 mods for 4m by Paul PA0OCD
      • MRF300 for 50-70 MHz by Sergey EX8MLE
    • Antennas
      • Comparison of commercial 4m verticals by Ian Hogan G6TGO
      • Diamond D-130N on 4m by Marc PA1O
      • Improvements to the YG5-4 antenna by Marcel Pertus F5DQK
    • Beacons
      • 70w 4m Beacon PA by Sergey EX8MLE
      • Beacon Equipment by Bo OZ2M
    • Filters
      • A low pass filter for 70MHz by Alex IK0VAQ
    • Software
    • Transceivers
      • FT-847 Modifications by SP2DMB and SP3RNZ
    • Transverters
  • Contests
  • Forum
  • Photos
  • About

Amplifier links

On this page you can find links to external amplifier information

An All-in-One amplifier by Sergey, EX8LME.

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