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QAMP20 manual
Models:
QAMP20
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Troubleshooting
Install
Warranty
The Ramsey Learn-As-You-Buildassembly Strategy
Your Power Supply And Rf Output Power
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QAMP20 • 18
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Contents
20 MTR 20 WATT QRP LINEAR AMPLIFIER KIT
Ramsey Electronics Model No. QAMP20
First printing January
CW POWER AMPLIFIER KIT
TABLE OF CONTENTS
20 METER QRP
INTRODUCTION
HOW IT WORKS
ˆ1 100 to 220 µf electrolytic capacitor C1
THE RAMSEY LEARN-AS-YOU-BUILDASSEMBLY STRATEGY
TIPS AND NOTES
CONSTRUCTION
ˆ23. Install R5, 1 K ohm resistor brown-black-red
Transistor bend pix
12 turns through center of core
core as shown
14 turns through center of core
through the core, continuing on in the same direction as before. Tin each end with solder all the way up to the core body. This winding is the 2 turn center-tappedsecondary of T2
INITIAL TESTS
YOUR POWER SUPPLY AND RF OUTPUT POWER
VERIFYING TRANSMITTER RF OUTPUT
Ideally, you have a small RF wattmeter, already inserted in the antenna line, capable of accurately measuring low output power in watts. And it cost you less than what you paid for the transmitter kit. Right? In the words of Wayne from Waynes World... Not! So here are a few other ideas for you to try
MAXIMIZING RF POWER OUTPUT
TROUBLESHOOTING HINTS
USING THE QRP POWER AMPLIFIER
ENCLOSURE RECOMMENDATIONS
PARTS LAYOUT QAMP20 POWER AMPLIFIER KIT
QAMP20
The Ramsey Kit Warranty
QAMP20
3.FACTORY REPAIR OF ASSEMBLED KITS
Quick Reference Page Guide
ESTIMATED ASSEMBLY
QAMP20 20 WATT LINEAR AMPLIFIER
REQUIRED TOOLS
