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Linear power amplifiers designed and built by Gazizs Mansurovs YL2QM 
 

 

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Detailed schematic information available for tube customers  as a bonus


Grid driven 3.5kW / 2.5kW a key down linear amplifier using GU-78B / GU-84B tubes


CONTENTS

RF Amplifier

Parameters

Photos
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

 



Built by Paolo
IW6BET and Pietro IW6GDGJ


Simple cathode driven a 800-W key down linear amplifier using GU-74B tube


CONTENTS

Amplifier RF desk

Amplifier control circuitry

High-voltage power supply

Parameters
 


Simple cathode driven a 650-W key down linear amplifier using glass GU-81M tube


CONTENTS

Amplifier RF desk

Amplifier control circuitry

High-voltage power supply

Parameters
 


Grid driven a 600-W key down linear amplifier using GU-74B/4CX800A tube

CONTENTS

Amplifier RF desk

Amplifier control circuitry

High-voltage power supply

Parameters


Grid driven a 1200-W key down linear amplifier using a couple of GU-74B/4CX800A tubes

 

CONTENTS

Amplifier RF desk

Amplifier control circuitry

Parameters

Printed circuit boards


Cathode driven a 800-W key down linear amplifier using GU-74B/4CX800A tube

 

CONTENTS

Amplifier RF desk

Amplifier control circuitry

High-voltage power supply

Parameters


Untraditional a 1000-W key down linear amplifier using GU-74B/4CX800A tube
Efficiency factor depends on a level of a signal amplification in traditional analog amplifiers.  The efficiency is changing from 0 up to maximum.
As a result - average efficiency of amplifier is very low.  Efficiency of this amplifier always is equal to maximum, because the attitude of AC and DC component of an anode current almost does not vary under amplification changing.

 

CONTENTS

Amplifier RF desk

Amplifier control circuitry

High-voltage power supply

Parameters


Cathode driven a 1000-W key down linear amplifier using a couple of GI-7B tubes
 


CONTENTS

Amplifier RF desk

Amplifier control circuitry

High-voltage power supply

Parameters

Printed circuit boards

Built by Leonid EW1DS


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