![]() ![]() The MFJ-1278B communicates with your computer through a serial port, using signals corresponding to a standard called RS-232C. Throughout this manual we will use the term "computer" to refer to the computer or terminal you use to communicate with your MFJ-1278B. MFJ-1278B MULTI-MODE COMPUTER INTERFACING COMPUTER INTERFACING You are now ready to connect your MFJ-1278B to your station's computer or terminal. Two open end radio port cables with 5-pin DIN male connectors. 240V AC adapter supplied for MFJ1278BX (export model for country which operate on 220-240V AC). One MFJ-1278B or MFJ-1278BT Multi-Mode Data Controller 2. MFJ-1278B MULTI-MODE INTRODUCTION Items supplied with MFJ-1278B/MFJ-1278BT package 1. You also get a Key Paddle input jack so you can use your MFJ-1278B as an Iambic Keyer or Memory Keyer. The EPROM containing the MFJ-1278B firmware, previously 512K bits, has been expanded to 1 Megabits giving the MFJ-1278B twice the room to grow in. This new technology helps prevent many packet collisions inherent in the current packet protocol. MFJ-1278B MULTI-MODE INTRODUCTION The new "packet collision prevention" features - Prioritized Acknowledgments and Slottime are installed. The MFJ-1278B interfaces your radio with any personal computer that has an RS-232 or TTL level Serial Port and a terminal program. ![]() By choosing the MFJ1278B, you have chosen the most versatile and powerful Multi-mode Data Controller manufactured for the Amateur Radio Service. MFJ-1278B MULTI-MODE INTRODUCTION INTRODUCTION Welcome to the exciting world of Amateur Digital Communications. 340 Demodulator Center Frequency Alignment. 340 Set Modulator Tones Using Built-in Calibration Software. MFJ-1278B MULTI-MODE TABLE OF CONTENTS Comprehensive Alignment Procedure. MFJ-1278B MULTI-MODE TABLE OF CONTENTS Link Status Messages. MFJ-1278B MULTI-MODE TABLE OF CONTENTS Packet Timing. MFJ-1278B MULTI-MODE TABLE OF CONTENTS Summary of AMTOR Contact Sequence. MFJ-1278B MULTI-MODE TABLE OF CONTENTS CONNECT. MFJ-1278B MULTI-MODE TABLE OF CONTENTS FSK CONNECTION. 4 Computer Interface with MFJ Starter Pack. MFJ-1278B MULTI-MODE TABLE OF CONTENTS Table of Contents INTRODUCTION. ![]()
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