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Summary of Contents for MFJ MFJ-1270X
- Page 1 TNC-X Packet Controller Model MFJ-1270X INSTRUCTION MANUAL CAUTION: Read All Instructions Before Operating Equipment MFJ ENTERPRISES, INC. 300 Industrial Park Road Starkville, MS 39759 USA Tel: 662-323-5869 Fax: 662-323-6551 VERSION 1A COPYRIGHT © 2010 MFJ ENTERPRISES, INC.
- Page 2 Customers using this manual should report errors or omissions, recommendations for improve- ments, or other comments to MFJ Enterprises, 300 Industrial Park Road, Starkville, MS 39759. Phone: (662) 323-5869; FAX: (662) 323-6551. Business hours: M-F 8-4:30 CST.
- Page 3 For example, daughter boards are now available that can turn the MFJ-1270X into either of two types of digipeaters, or into a stand alone APRS Tracker. In addition, the expansion header provides access to a second on-board serial port. The X-Track daughter board, for example, uses this port to receive data from a GPS receiver.
- Page 4 MFJ-1270X Instruction Manual TNC-X Packet Controller Note that the terminal speed setting does not affect the speed to transmit data. The out-going or transmit speed is always 1200 baud. Note also that if you set this baud rate faster than 1200 baud, it is possible for data to be fed into the modem faster than it can transmit it over the air.
- Page 5 TNC-X Packet Controller POWER: Indicates the MFJ-1270X has power supply voltage supplied. RECEIVE DCD: Indicates the MFJ-1270X is receiving a data packet signal from the radio. TRANSMIT PTT: Indicates that the MFJ-1270X is transmitting data signal from the radio. Radio Setup The radio connections are made via a 5-pin DIN chassis mounted connector.
- Page 6 TNC-X Packet Controller Troubleshooting The MFJ-1270X is designed to give years of service. However, as with all things sometimes prob- lems do come up and need to be taken care of. Here are a few troubleshooting tips in the event that something does go wrong.
- Page 7 Windows XP, as well as older versions of Windows. If you want to use AGWPE, there is a link on the TNC-X webpage that contains detailed instructions. If you have any problems with any of this, please contact MFJ Technical Services at the phone number in the warranty instructions.
- Page 8 MFJ Technical Service at 662-323-0549 or the MFJ Factory at 662-323-5869. You will be best helped if you have your unit, manual and all information on your station handy so you can answer any questions the technicians may ask.
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Page 9: Headers And Jumpers
MFJ-1270X Instruction Manual TNC-X Packet Controller PARTS LIST FOR MFJ-1270X CAPACITORS PART NO. DESCRIPTION 10 µF Electrolytic 100 pF Disk Ceramic; (Marked 101J) C2, C4, C5, C6, C11, C14, C15, C16, C17, C18, C19, .01 µF Multilayer C20, C26 C21, C22, C23, C25 .1µF Multilayer... -
Page 10: Other Components
MFJ-1270X Instruction Manual TNC-X Packet Controller OTHER COMPONENTS PART NO. DESCRIPTION 3.57 MHz Crystal (maybe marked A035) 20 MHz. Crystal (maybe marked A200) 2N2222 or equivalent FT232RL USB Interface Chip CML 614 Modem Chip FM25640 FRAM Memory Chip PIC16F628A or PIC16F648A... -
Page 11: Limited 12 Month Warranty
2. MFJ Enterprises, Inc. agrees to repair or replace at MFJ's option without charge to the original owner any defective product under warrantee provided the product is returned postage prepaid to MFJ Enterprises, Inc.
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