MFJ-1278B MULTI-MODE Appendix G Jumper Functions, Jmpa | Epson

MFJ-1278B MULTI-MODE APPENDIX G: JUMPER FUNCTIONS

Table G-1: Jumper Function (Cont.)

Jumper #	Position	Function

JMP18	Pin 1 & 2 (default)	Enable 19.2K baud termial
		Disable 300 baud terminal
	Pin 2 & 3	Enable 300 baud termial
		Disable 19.2K baud terminal
JMP19	Outside pair (default)	Enable 32K mailbox RAM
	Middle pair	Enable 128K mailbox RAM
	Inside pair	Enable 512K mailbox RAM
JMP20	ON	512K mailbox RAM installed
	OFF (default)	32K or 128K mailbox RAM
JMP21	Pin 1 & 2	154 KHz to multi-level PCB
	Pin 2 & 3 (default)	307 KHz to multi-level PCB
JMP22	Pin 1 & 2	Enable CW Grid Block Keying
	Pin 2 & 3 (default)	Enable CW Direct Keying
JMP23*	ON	Enable memory RESET
	OFF (default)	Normal operation
JMP25	Pin 1 & 2 (default)	Normal Demodulator operation
	Pin 2 & 3	Demodulator Bypass
JMP26**	Pin 1 & 2 (default)	Normal +5Vb bbRAM operation
	Pin 2 & 3	Real-time clock installed
JMPA	ON	Disable multi-gray levels PCB
	OFF (default)	Enable multi-gray levels PCB
JMPB	ON (default)	On board transmit low tone
	OFF	out board transmit low tone
JMPC	ON	Enable external DCD
	OFF (default)	Disable external DCD
JMPD	NOT used
JMPE***	ON (default)	Disable Low Tone RTTY Demod
	OFF	Enable Low Tone RTTY Demod

Image 357

Epson manual MFJ-1278B MULTI-MODE Appendix G Jumper Functions, Jmpa

Contents

Table of Contents FSK Connection Getting Started Connect FAX Operation Navtex OperationSlow Scan Television Operation Advanced Packet Operation 125 MULTI-LEVEL Interface CONNECTOR,J13 MFJ-1278B SpecificationsExternal Modem Interface Connector J14 HF Tuning Indicator BPS Packet Setup CW Modem TUNE-UP ProcedureCommand Summary MFJ-1278B/1278BT Parts List MFJ-1278B MULTI-MODE Table of Contents MFJ-1278B MULTI-MODE Introduction MFJ-1278B MULTI-MODE Introduction MFJ-48BE Items supplied with MFJ-1278B/MFJ-1278BT package MFJ Starter Packs MFJ-1278B MULTI-MODE Computer Interfacing Pin Signal Name Description Serial Port SignalsSerial port signals required by MFJ-1278B Manufacturer Model Apple Macintosh Computer with Specific Serial InterfacesMacintosh MFJ-1278B Pin DB-25P DB-9P Hsko Hski IBM PCjr Commodore C64, C128 and VIC-20 Color Computers Radio Shack Color ComputerIBM PC/XT/AT/386/486 and compatibles Computer Color Computer DB-25P MFJ-1278B RS-232C Computer RS-232C Other Computers with Nonstandard Serial Ports Apple II, II+, IIe, IIc Compatibility TerminalMacTerm Parameters for MFJ-1278B IBM and Compatible Computers Radio Shack Model 100/102 and NEC MFJ-1278B Serial Port PIN FunctionsPin # Mnemonic Name RS-232C Pin Designations Autobaud Computer Baud Rate Changing Terminal Baud Rate MFJ ENTERPRISES, INC. Model MFJ-1278B BbRAMLOAD with Defaults a MFJ-1278B DB-25 Name Printer Port Pin # Printer Port Connection Printer Consideration Printer Port TestType Printtes CR MFJ-1278B Radio Ports MFJ-1278B MULTI-MODE Radio Interfacing Radio Connector Pin Diagram HT Special Keying Circuit Transmit Audio Level Adjustment for Method I Interface Method 1 Direct Connection to Microphone and SpeakerCalibra Setting the Receiver Audio Input Level Accessory Jack Interface Method 2 Accessory Jack or Interface Box Connection External Interface Box Transmit Audio Level Adjustment for Interface Method Important Note Harmonics Interference Receiver Audio SettingPage MFJ-1278B MULTI-MODE Radio Interfacing CW Installation Keying ConnectionKey Paddle Connection FSK Cable MFJ-1278B MULTI-MODE Radio Interfacing FSK Connection Basic Commands MFJ-1278B MULTI-MODE Basic Operation Getting StartedFirst Steps MFJ-1278B MULTI-MODE Basic Operation Serial Port ConfigurationMycall K5FLU Mycall was Nocall cmd Parity and Word Length EchosParity 1 or Parity New Lines and Line Wrapping AMTOR, Navtex VHF RTTY, VHF Ascii Modem Operation ModesModem LOW Tone Hz High Tone Hz Shift Hz Mode Switching With the Mode Command MFJ-1278B MULTI-MODE Basic Operation Operational ModesVerifying Operation Status Memory Buffers Radio Port Switching Transmitting the Memory Buffers Loading the Memory BuffersBuffer Serial Numbering BUF1 The QTH here is Starkville, Mississippi. Enter Chaining the Memory Buffers Memory Repeat and Buffer Repeat TimeBuftime 15 Enter Buftime to MFJ-1278B MULTI-MODE Basic Operation Tuning Indicator MFJ-1278B MULTI-MODE Basic Operation Packet Operation Connecting and Disconnecting ExerciseVHF Packet Cmd Fulldup on Cmd Connect K5FLU Disconnected Cmd Disconne AD7I DigipeatingCmd Connect N2WX VIA AD7I Cmd Connect N2WX VIA NK6K, KV7D Monitoring Channel Activity Unsuccessful ConnectionsRetry count exceeded Disconnected WB6YMHWD0ETZ,KV7B Mheard EnterAD7I WA7GXD N2WX NK6K KV7B Starting the QSO Your First Packet QSOCmd Connect WB0QRP Connected to WB0QRP CTRL-C Cmd Connect K5FLU VIA WB0QRPCmd Connect WB0QRP VIA K5FLU Monitoring on the Air Cmd Command 5 was $03Special Input Characters Cmd Monitor on Cmd Mcon on Cmd Convers Hi, John, how are you? Cmd Hi, John, how are you?CTRL-X\Canline RedisplaPage HF Packet Operation Hints MFJ-1278B MULTI-MODE Basic Operation Pactor What is Pactor?Pactor Operation Pactor FEC Unproto operation Mode PT EnterMFJ Pactor $2c-1022 free pcmd Mycall n Enter Monitoring Changeover Threshold Control Setting Exiting Pactor ModeTxdelay TXD Monitoring Amtor ARQ requests Digital Memory ARQ Pactor Feature Definitions SPEEDup/SPEEDdown Connect Status Indicator Pactor Status IndicatorsAmtor Detection in Pactor STA CON Setting Up your Pactor Mailbox MFJ-1278B MULTI-MODE Basic Operation Pactor MailboxMemory Size # of Slots Bytes Avail Mailbox on Enter MFJ Pactor $2c-1022 free General Overview Sysop EnterMailbox Ready Free de callsign Help, K, L, R, S MFJ-1278B MULTI-MODE Basic Operation Nn free de callsignHelp, K, L, R, S Slot## t m To From Subject SP call Detailed Pactor Mailbox Overview Send msg Control-Z or /EX on it own line ends Enter Subject Max Characters ## Enter Message ## deleted Nn free n Mailbox Help,K, L, R, SEnter ## Enter Nn free n Mailbox Help, K, L, R, S Mailbox Messages Pactor Enter?EH MFJ-1278B MULTI-MODE Basic Operation CW Operation Procedure Enter Receiving CW Mode CW,15 Enter Transmitting CWMSPeed 15 Enter CW Weighting Weight ### EnterTransmitting from Memory Buffers Random Code Generator Tuning your RadioCONTROL-C Randomcw OFF Enter Randomcw on Enter Setting Up the for Code PracticeCtrl-R Ctrl-T Mspeed 15 Enter Sending CW with External Key Paddle Mode MC Enter Radio Terminal Mode Modulated CW CmdMFJ-1278B MULTI-MODE Basic Operation Modulated CW Operation Setting Up for Ascii and Rtty Operation Mode ## EnterVHF Rtty Rtty and Ascii Receiving Mode VB,110 EnterRtty and Ascii Transmitting Bad? Baudot Rtty Operation Hints Mode HB,75 CTRL-T Commercial Rtty Reception SpeedConfidence Factor.SpeedData BitsRXInvert On/Off WtgCDBaud, 90% Confidence baud used 7 bits, RXInvert Off OK Enter OK Amtor Enter Command Mars Setting Configuring for MarsMode HB,75 Enter Mars Operation Operating Mars with MultiCom for IBM MARsmode Command Marsmode 3- Storage Mode Marsmode 1- QSO Mode Setting up for Mode a Operations Mode a ARQMode AM Enter MFJ-1278B MULTI-MODE Basic Operation Amtor Operation Operating Mode a N2WX becomes Nwwx using zone=Q 2=W 3=E 4=R 5=T 6=Y 7=U 8=I 9=O 0=P Mode B FEC Monitoring Mode A, ARQSetting up for Mode B FEC Mode B FEC Operations Amtor Status LED Indicators ARQ xxxx Enter Myselcal xxxx Enter Print on Enter Summary of Amtor Contact Sequence Navtex Stations and Frequencies MFJ-1278B MULTI-MODE Basic Operation Navtex OperationNavtex Operation Station QTH Station ID Broadcast Time UTC Navtex on Enter LORAN-C Omega Systems Satnav SystemsNavtex OFF Enter MFJ-1278B MULTI-MODE Basic Operation FAX Operation FAXMODEn Lines per Type of Service Minute Second FAX FormatsFaxmode n Enter FAX Frequency FAX InstallationPrinter Connection Locations Mode FX Enter Receiving FAXReceiving FAX to the Printer MFJ-1278B MULTI-MODE Basic Operation Display FAX Picture on Computer Screen & Save it to Disk Two Level FAX Picture FormatLF, CR, ESC x x, ESC x x x, nnn character of graphics Multifax on Enter Multi-level FAX Picture Raw Data Format Transmitting FAX Two Level FAX Transmitting000 001 110 111 White Lightest grey Darkest grey Black Multi-level FAX Transmitting MFJ-1278B MULTI-MODE Basic Operation Pixtones Creating FAX Pictures for TransmittingValues HEX FAX/SSTV Transmit Tones HzPage Sstv Formats Sstv InstallationPrinter Connection TVMODEn Formats Receiving Sstv Pictures Mode TV EnterSstv Printing to the Printer Tvmode n Enter MFJ-1278B MULTI-MODE Basic Operation $ss,$aa,$bb,$cc,$dd,$ee,$ff,$gg,$hh,$ii,$jj,$kk,$ll,$mm,$nn Printing Sstv Pictures to the Screen Saving Sstv Pictures to Disk Terminating Sstv PrintingTransmitting Sstv Pictures Creating Sstv Pictures for Transmitting MFJ-1278B MULTI-MODE Basic Operation Special Characters MFJ-1278B MULTI-MODE Advanced Operation Command ModePacket Operating Modes Dec Hex Control Mnemonic Entering Data-Transfer Modes Connected to callsign Converse Mode Transparent Mode Flow Control XON/XOFF Flow Control Hardware Flow Control Detailed VHF Packet OperationType-in Flow Control Station Identification W3IWI-3IDW3IWI/R Automatic Operations Unattended Operations Packet FormattingCmd Beacon Every Packet Timing Functions Commands Affecting ProtocolTransmit Timing Cmd Unproto QST VIA NK6K Keyup delay = TXDELAY*10 in milliseconds Keyup delay = Txdelay + Axdelay * 10 in millisecondsPacket Timing Retry interval = Frack * 2*n + Wait time = Dwait * 10 + r * Txdelay Radio Baud RateWait time = Dwait Monitor Functions Special Protocol Timing WB9FLWN7CL C KV7BN2WX D Real-Time Clock and Time Stamping How do I Invoke Multi-Connect? Setting the MFJ-1278B to Normal OperationConperm Users Easy-Mail Mailbox Users 1 CR Setting Up your Easy-Mail MailboxMailbox on CR Sysop CR Your MFJ-1278B will respond with Slot1 PN ToKB5JNZ FromKF5C BBS Bulletin Nn free n Mailbox B,E,Help,J,K,L,M,R,S,T Memory Size Number of BanksNn free 0 Mailbox B, E, Help, J, K, L, M, R, S, T Paging Sysop any key aborts No answer Paging Sysop any key aborts Title Mailbox Operation Cannot, not yours Send msg Control-Z or /EX to end Slot## t m To From Subject ## CR Forwarding Additional Mailbox FeaturesCallsign Busy Disconnected Connect requestCALLSIGN Eliciting Reverse Forwards Chat ModeRemote Heard Log Sysop Mailbox CText Idle TimeoutAbort Mailbox Messages ?Mailbox full You have new mailNot found None found Description Slotting and Acknowledgment Priority MFJ-1278B MULTI-MODE Advanced Operation Ackprior Onoff New Parameters Remarks Slots n Baud Rate Frack Seconds Other Related Parameters What to Expect Initial Parameter Settings SummaryFrack ACKTime MFJ-1278B MULTI-MODE Advanced Operation Packet Picture Transfer Using PktpixPrinting Packet Pictures thru Built-in Printer Port Packet Picture transfer to the computer screen Radio Setup for HF Packet Operation MFJ-1278B MULTI-MODE Advanced Operation MFJ-1278B MULTI-MODE Advanced Operation Operating HF Packet MFJ-1278B MULTI-MODE Advanced Operation MFJ-1278B MULTI-MODE Advanced Operation Yourcall Hiscall Yourcall CQ MFJ-1278B MULTI-MODE Advanced Operation Dwait OFF DigipeatCheck OFF Cmsg Retry Maxframe Kiss Interface for TCP/IP MFJ-1278B Kiss MODE, TNC-2 MODE, Host Mode Param ax0 Command Function Comments MFJ-1278B MULTI-MODE Operational Commands Command Preface Entering CommandsXflow OFF Command List MFJ-1278B MULTI-MODE Operational CommandsDefaults Cmd Asdfasdf Beacon EVERY/AFTER n Parameters Remarks Cmd Conok YConok on Mode FAX/SSTV Default OFF Mode Packet Default OFF8BITCONV ON/OFF 8LEVELS ON/OFF Mode Amtor Default OFF Mode FAX/SSTV DefaultON16LEVELS ON/OFF Aalt ON/OFF Acktime nnnn Mode Packet Default Mode Packet Default onAlockchar nn Mode CW/MCW Default $15 Ackpriority ON/OFF Ansbstr cccc Mode Amtor Default blank Altcall ssss Mode Amtor Default blank Arcvchar nn Mode RTTY/ASCII Default $12 Answrqra ON/OFFCmd Unproto Qracr Asendcha nn Mode RTTY/ASCII Default $14 ASASpeed Confidence Factor. Data Bit RXInvert On/Off Aspect n Mode FAX Default Autobaud ON/OFF Mode All Default on Autolf ON/OFF AUtolf ON/OFF Mode Pactor Default on Autotrac ON/OFF Awlen n Mode All Default Axdelay n AX25L2V2 ON/OFFAxhang Message Effect When Bbsmsgs on Axhang nBbsmsgs ON/OFF Beacon Everyafter n Mode Packet Default Every Bkondel on Bkondel ON/OFF Conmode TRANS/CONV BLP ON/OFFParity Awlen Btext text Mailbox on line. Messages for WB9FLW, AD7I, K9NGBudlist ON/OFF BUF n Bufkey nnnBuftime n Bwnl ON/OFF CaliraSpace Canline n Calset n Canpac n Cancel Display Output Cbell ON/OFF CBell ON/OFF Mode Pactor DefaultOFFOFF BELL*** Connected to callsign Ccitt ON/OFF Mode Rtty Default onChange Chat CHObell ON/OFF Mode Pactor Default on Check nCHECKV1 ON/OFF CMDchr nnn 0=nn=255 Mode Pactor Default $03 Cmdtime n TNCConnect callsign Conperm ON/OFF Cmsgdisc ON/OFF Cmsg ON/OFF Command n Conmode CONVERS/TRANS ConversTrans Connect WA7GXD VIA N0ADI-1,WD0ETZ Call2 Conok ON/OFF Connect request callCall station busy Constamp ON/OFF Connected to N2WX 05/28/85Converse CR ON/OFF Cpactime ON/OFF Text Ctext textIm not here right now, but you may leave a message Cstatus CWidmode nn 0=nn=255 Mode Pactor Default Cwcall ssss Mode Amtor Default blank Cwsendch nnn Mode CW Default$FF Mode CW Default OFFCwspeedm ON/OFF Yymmddhhmm Daytime date&timeCmd Daytime Cmd Daytime 02/29/84 Dayusa ON/OFF Deadtime nnn Delay nn Mode ASCII/RTTY Default on Delete ON/OFFDiddle ON/OFF Disconne Digipeat ON/OFF Asyfrerr Display classAsyqover Asyrxovr Digisent BbfailedHovrerr Hundrerr Rxlenerr RxerrorsRxresync Sentfrmr EAa ON/OFF Mode Pactor Default on DisplayDwait n EAS ON/OFF Mode CW/RTTY/ASCII Default OFFEasin ON/OFF Echo ON/OFF ERrstrin cccc Mode Pactor Default ECho ON/OFF Mode Pactor Default on ParameterMode Amtor Default on Epson ON/OFF Mode Packet Default OFF Parameters EXActcal ON/OFF Mode Pactor DefaultONEscape ON/OFF Faxeop ON/OFF Farnswor ON/OFF Faxneg ON/OFF Mode FAX Default OFFFaxrev ON/OFF FEC FLow ON/OFF Mode Pactor Default on Flow ON/OFFForward Fulldup ON/OFF Headerln ON/OFF Graphlf OnoffKV7DN2WX Go ahead and transfer the file N2WXKV7D HID ON/OFF Healled ON/OFF IDTime nnn Mode Mailbox Default OFF Kilonfwd ON/OFFKiss ON/OFF Lc callsign Lcalls call1,call2...,call8Lcok Onoff LFadd ON/OFF Mode Pactor Default OFF LEdmode 0/1 Mode Pactor Default Lfadd Onoff Mode ASCII/Packet Default OFFLfaddalt ON/OFF Lfignore ON/OFF Mode Amtor Immediate Command MAILbox ON/OFF Mode Pactor Default OFFListen Mailbox ON/OFF Mall ON/OFF Mailled ON/OFF TX Translations Marsmode n@ Bell \ Null Figs Ltrs Bell Null MAXDown nnn Mode Pactor Default Maxframe n Mode Packet DefaultMatch ON/OFF MAXSum nn Mode Pactor Default MAXUp nnn Mode Pactor DefaultMbegin cccc Mode Amtor Default Mcon ON/OFF Mcom ON/OFF Mend cccc Mode Amtor Default nnnn Mfilter n1,n2,n3,n4 Mode Packet Default noneMctext text Mheard MhclearMode MNONAX25 ON/OFF Monitor ON/OFF Mode Pactor Default on Monitor ON/OFFN2WXW5FD-3 Im ready to transfer the file now WB9FLWAD7I,K9NG*,N2WX-7Hi Paul Mrpt ON/OFFWB9FLWAD7IHi Paul Mspeed n Mstamp ON/OFF Mtimeout n Mycall call-n Multifax ON/OFF Myalias call-n Mode Packet Default blank MYcall callsign Mode Pactor Default Mfjpactr Myhierad Text Mode Mailbox Default Mymcall callsignMyselcal ssss Mode Navtex DefaultOFF Navstn Text Mode Navtex Default ALLNavtex ON/OFF Navmsg LORAN-CNewmode ON/OFF Mode Pactor Default OFF Nodeforw node Mode Mailbox DefaultNO200 ON/OFF Cmd Nodepath C KB4VOL Cmd Nodeforw PSL5 Nodepath text string Mode Mailbox DefaultNomode ON/OFF Nucr ON/OFF Nulls n Paclen n Mode Packet Default Pactime Everyafter n Mode Packet Default AfterOmlc ON/OFF CTRL-V CTRL-C Pass n Mode Packet Default $16 Passall ON/OFF Pixtones n White Lt gray Dark gray Black AreaSyn Pixtones Values HEX FAX/SSTVTransmitTones Hz Mode Packet Immediate Command Entering transparent mode for packet-pix receptionPktpix ON/OFF Printgra ON/OFF Printer ON/OFFPrinttes PTSend PTOver nnn 0=nn=255 Mode Pactor Default $19 QRT Radio nRandomcw ON/OFF Reconnect call1 VIA call2,call3...,call9 Mode Packet Rbitmask $xx Mode RTTY/ASCII Default Redispla n Remsysop call-n Mode Mailbox Default Blank Resptime n Mode Packet Default ResetRestore Restart RETries nnn 0=nn=255 Mode Pactor Default Revflim call-n Mode Mailbox DefaultRetry n Rinv ON/OFF RFE ON/OFF $FF Rxblock ON/OFFPID Data Rxbr n TVBreak Values Rxbright n Rxcal Calset Adjustment & Location Map Rxinvert ON/OFF Rvfalway ON/OFF Serialno n Mode CW Default Modem Default Baud Rate Speed/ Format SetupSstv Sfnl ON/OFF Solf ON/OFF Slots nnn Mode Packet Default Start n Srxall ON/OFFSTatus Status Stop n Streamca ON/OFF Streamdb Onoff This is a testStreamsw n Timedmin n Mode Mailbox Default Timedcmd text string Mode Mailbox DefaultMailbox String- max 119 chars TRace ON/OFF Mode Pactor Default OFF Trace ON/OFFKV7BCQ,KF7B*this is a test message Trflow ON/OFF ModePacket Default OFF Tries n Mode Packet Default None TuneTuneproc Tvbreaks n Mode Sstv Default see below Mode Sstv Default OFFTvhsync ON/OFF Tvmode n Mode Sstv Immediate Command TVX ON/OFF Txdelay n Mode Packet Default Txdelayc nnn TXDelay n Mode Pactor Default 2 60msTxdelayc = Radio-PTT-delay-time / Time-per-character Baud Rate Time-per-character Txdiddle ON/OFF Txtmo n Mode Packet Default Txflow ON/OFFTxinvert ON/OFF Txuiframe ON/OFF U1 UNprotoU2 UNproto URepeats nn Mode Pactor Default Users n Mode Packet DefaultUnshift ON/OFF Defaults Nibble Tone Visticks nnnn Mode Sstv Default0 Weight n Mode CW Default WAitdisc nn Mode Pactor DefaultWdmode ON/OFF WRU Xmitok ON/OFF Xoff n Mode All Default $13 XOff nn XOn nnXON n BbRAM loaded with defaults Packet MessagesWas Too many packets outstanding MFJ-1278B MULTI-MODE System Messages? Expected bank n....x Message saved ?bad Command Mode Error Messages?call ?clock not set ?VIA Link Status Messages Connect requestcall1 VIA call2,call3...,call9 Connected to call1 VIA call2,call3...,call9Callsign busy Frmr frame just sent Frmr sent LINKOUTOFORDER, possible datalossopt.daytime stamp Frmr rcvd MFJ-1278B MULTI-MODE Hardware MFJ-1278B Specifications General Description Power RequiredBbRAM Protocol Detailed Circuit Description OscillatorDividers and Baud-rate Generator Serial Interface CPU Complex Watch-dog Timer Power SupplyModem RS-232C Handshaking Protocol MFJ-1278B MULTI-MODE Hardware Jumper # Position Function MFJ-1278B MULTI-MODE Hardware Jumper Functions JMP17 JMP16JMP18 JMP19 Jmpc JmpbJmpd Jmpe Printer Port Pin # Pin Function Parallel Printer Port PIN FUNCTION,J12 J5 Pin # Pin Function J13 Pin # Pin Function External Modem Interface Connector J14 Pin 1 Carrier Detect Input MFJ-1278B MULTI-MODE Hardware Modem Disconnect HEADER, J4Pin 2 Carrier Detect Output Pin 3 SIO Special Interrupt Input Pin 6 Transmitter Key Input Pin 5 SIO RTS OutputPin 7 Connect Status Output Pin 8 Unacknowledged Packets Pending Status Output HF Tuning Indicator General Tests MFJ-1278B MULTI-MODE Troubleshooting Assembly Problems Obvious Problems Cabling Problems Specific SymptomsSymptom TNC appears dead Oscillator and Reset Circuits Symptom Modem wont calibrate or key transmitter Terminal Interface Troubleshooting Symptom Uncopyable transmitted or received packetsSymptom MFJ-1278B wont sign on to the terminal Symptom The MFJ-1278B signs on OK but wont accept commands Data Link Layer Physical Layer Hdlc Frames MFJ-1278B MULTI-MODE Packet Radio Protocol AX.25 Level TWO Code Abbrv Frame Type REJ RNRSabm DiscPage Channel Flow Control Table A-1HOOKUP for Specific Radios MFJ-1278B MULTI-MODE Appendix a Radio Hookup Table A-1.2Other Radio Connections MODULATOR/DEMODULATOR Frequency Calibration MFJ-1278B MULTI-MODE Appendix B Modem CalibrationCalibration Method Test equipment needed Multilevel xmit...1900 2250 Hz 70 Multilevel demod 307 154KHz 1550 Hz 106Demodulator Alignment R79 Calibration Procedure Comprehensive Alignment Procedure Set Modulator Tones Using Built-in Calibration Software= INT 525000 / Flow + = INT 525000 / Fhigh + Demodulator Center Frequency Alignment Alignment Procedure Tuning Indicator Alignment MFJ-1278B MULTI-MODE Appendix B Modem Calibration MFJ-1278B Adjustment Location Map Calset # Calset Values for Various Modulator Tone FrequenciesPage Detailed CW Demodulator Alignment Procedure MFJ-1278B MULTI-MODE Appendix B Modem Calibration MFJ-1278B MULTI-MODE Appendix B Modem Calibration Cali CR Audio Output Level Adjustment Procedure Radio 2 CR MFJ-1278B MULTI-MODE Appendix C Audio Output First Method Noise Average Frequency MFJ-1278B MULTI-MODE Appendix D HF Radio HF Radio Alignment Fc = Flow+Fhigh/2 Page MFJ-1278B MULTI-MODE Appendix E Converting to TNC-2 Mode VP,2400 CR BPS Packet Setup BPS Transmit Audio Setting BPS Receive Audio SettingMFJ-1278B MULTI-MODE Appendix F 2400 BPS Packet CN-6 Jumper Position Transmit Audio Range no load JMP14 JMP13 Jmpa MFJ-1278B MULTI-MODE Appendix G Jumper Functions Jmpz Fig. G-1 Jumper Connector Location Acktime MFJ-1278B MULTI-MODE Appendix H Command Summary BLP Conperm Deadtime FEC Lfignore Mrpt Pactime Retry Timedmin Users MFJ P/N Descrpition Component IDRESISTORS, 1/4 WATT, 5% RESISTORS, 1/8 WATT, 1% MFJ-1278B MULTI-MODE Appendix I Parts List Trim POT Single TURN, Miniature TRIMPOTS, Bourns or EqualPOT 17MM Single TURN, PCB Mount Capacitors MULTI-LAYER, Monolithic Ceramic Capacitors Electrolytic Capacitors MYLAR, 50V/100V Capacitor Other Types IC Sockets LOW ProfileICS Do not use 74HCT14 for these ICs Transistors DIODES/LEDS Voltage Regulator Connectors Miscellaneous Display PC Board Assembly For Installing CoverGrayscale PC Board Assembly Mounting NUT for R131 BOM for Display PC Assembly P/N This is to Insure Good Contact with Chassis Reduce EMIAddition Parts for MFJ-1278BT only BOM for Grayscale PC Assembly P/N Resistors 1/8W, 1%Trimpot 15 Turns, Bourns or Equal Capacitor Electrolytic Descrpition Component ID Capacitor Monolithic CeramicIC Sockets ICs RESISTOR, 1/4 WATT, 5% RESISTOR, NETWORK, SINGLE-ON-LINE, Isolated RESISTOR, 1/8 WATT, 1%RESISTOR, Trim POT, Single TURN, MINIATURE, Horzontal Capacitors Disc Ceramic Diodes CENTER, Right Angle JMP 14B POS. Header CENTER, TOP ENTRY,10 POS CN1 Dual ROW Socket ConnectorCENTER, 3 POS. Header POS. Shorting Jumer for CN6 MFJ-1278B MULTI-MODE Manual Index Manual Index Autotrac MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index Connect Cwspeedm CW KEY-IN MFJ-1278B MULTI-MODE Manual Index FARnswor, 73, 75 Farnsworth CW, 75 FCS\, Hdlc field Introduction MFJ-1278B MULTI-MODE Manual Index Normal CW MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index MFJ-1278B MULTI-MODE Manual Index Txdelay