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MFJ Enterprises MFJ-1278 User Manual

MFJ Enterprises MFJ-1278
19 pages
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Easy-to follow guide to connecting your new
MFJ-1278/1278T Multi-Mode Data Controller
between your radio and computer
CAUTION: Read all Instructions Before Operating Equipment
MFJ ENTERPRISES, INC.
P.O.BOX 494, MISSISSIPPI STATE, MS 39762, USA
COPYRIGHT © 1990 MFJ ENTERPRISES, INC.
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MFJ Enterprises MFJ-1278 Specifications

General IconGeneral
InterfaceRS-232
Power Supply12 VDC
ModesPacket, AMTOR, RTTY, ASCII
Baud Rate300
TypeMultimode Controller

Summary

Installation

Power Supply

Details on connecting the AC adapter and power requirements for the MFJ-1278.

Computer Interfaces

Instructions for connecting the MFJ-1278 to IBM, Commodore, and Macintosh computers.

Radio Interface

Basic Operation Commands

Transmit Audio Level Setting

VHF Radio Transmit Audio Level Setting

Procedure for setting transmit audio levels for VHF packet operation.

HF Radio Transmit Audio Setting

Procedure for setting transmit audio levels for HF packet operation.

Receiver Audio Setting

MFJ-1278 2400 Packet Operation

2400 Packet Operation Setup

Details on configuring parameters for 2400 baud packet operation.

Receive Audio Setting

Information on automatic gain control for receive audio in 2400 packet mode.

Transmit Audio Setting

How to adjust transmit audio levels for the 2400 modem.

Automatic Signal Analysis (ASA)

Command Update

ASA

Analyzes incoming signals (RTTY, ASCII, AMTOR, HF packet) and displays status.

OK

Command used with ASA to accept analyzed results and set the operating mode.

Radio Cable Wiring Diagrams

8-pin Microphone Connector

Wiring diagrams for 8-pin microphone connectors for Kenwood, ICOM, and Yaesu radios.

4-pin Microphone Connector

Wiring diagrams for 4-pin microphone connectors for Kenwood, ICOM, and Yaesu radios.

Handheld Radio Connectors

Wiring for handheld radio connectors (TNC-2) for Kenwood, ICOM, and Yaesu radios.

Using the Accessory Jack

Diagrams for using the accessory jack on specific radios like TS440 and ICOM 735.

Hookup for Specific Radios

Pinout tables for connecting specific Kenwood, ICOM, and Yaesu radios.