Ramsey Electronics FX Series - FX-223 General Reference Information

TABLE OF CONTENTS:
The Ramsey FX-223 Transceiver Manual is organized into three sections:
General Reference Information, Kit Assembly Phase 1, and Kit Assembly
Phase 2.
FX-223 GENERAL REFERENCE INFORMATION
Notice Regarding FX-223 Frequency Coverage ................................4
FX-223 Technical Specifications ........................................................5
Introduction to Transceiver Kit Assembly ...........................................6
A Message to Ham Radio Beginners .................................................8
DC Power Supply Considerations ......................................................9
Enclosure and Hardware Considerations.........................................10
Ramsey CFX Transceiver Enclosure Kit ..........................................12
Guide to PC-board I/O Connections.................................................14
Microphone & Speaker Information..................................................16
A Few Antenna Considerations........................................................16
VHF Packet Data Operation .............................................................17
FX-series Transceiver Block Diagram..............................................18
FX-223 Circuit Overview...................................................................19
Quick-Reference Programming Guide .............................................27
FX-223 Programming Worksheet.....................................................31
Using Computer BASIC as a Programming Aid...............................32
How to Activate an Auxiliary (non-Standard) Offset.........................35
Programming "Minus" Offsets...........................................................36
FX-223 Programming Summary.......................................................38
Basics of Externally-Controlled Frequency Switching ......................38
FX-series GLOSSARY of Terms ......................................................40
Troubleshooting Guide .....................................................................46
Note on Replacement Parts..............................................................49
RAMSEY ELECTRONICS FX Kit Warranty Terms..........................51
FX-223 Master Component Index ....................................................53
KIT ASSEMBLY: PHASE 1
Assembly and Explanation of Circuit Stages A through F
(including Kit Parts List, kit-building tips and preliminary receiver & VCO
test)............................................................................................60 - 86
KIT ASSEMBLY: PHASE 2
Assembly and Explanation of Circuit Stages G through TX (includes all
Frequency Programming directions plus alignment and transmitter tuneup.)
................................................................................................ 87 - 125
Optional Helical Filter Installation ...................................................126
Technicians Notes ..........................................................................127