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QRP-20 • 3
QRP20 20 METER CW
TRANSMITTER KIT
Ramsey Publication No. QRP20
Price $5.00
TABLE OF CONTENTS
Introduction to the QRP20 ............. 4
Understanding Power Levels ......... 5
QRP20 Circuit Description ............. 7
Block Diagram ................................ 8
Parts List ........................................ 9
Schematic Diagram ...................... 10
Parts Layout Diagram .................. 11
QRP20 Assembly Instructions ..... 12
Crystal Oscillator Testing ............. 16
Initial Tests ................................... 17
Verifying RF Power ...................... 18
Maximizing RF Power Output ...... 19
Options for Finishing Project ........ 20
Enclosure Ideas ........................... 20
Choosing Crystals ........................ 20
Troubleshooting Guide ................. 21
Ramsey Kit Warranty ................... 22
KIT ASSEMBLY
AND INSTRUCTION MANUAL FOR
RAMSEY ELECTRONICS, INC.
590 Fishers Station Drive
Victor, New York 14564
Phone (585) 924-4560
Fax (585) 924-4555