Epson Multi-mode Data Controller MFJ-1278B Manuel d'utilisateur

MFJ-1278B MULTI-MODE TABLE OF CONTENTS Table of Contents INTRODUCTION...

MFJ-1278B MULTI-MODE INTRODUCTION The new "packet collision prevention" features -- Prioritized Ack

MFJ-1278B MULTI-MODE BASIC OPERATION letter identifies the type of message. Refer to the following explanation of

MFJ-1278B MULTI-MODE BASIC OPERATION The types of Navtex messages currently are: A. Navigational warnings B. St

MFJ-1278B MULTI-MODE BASIC OPERATION FAX OPERATION The MFJ-1278B provides an independent multi-gray level modem to

MFJ-1278B MULTI-MODE BASIC OPERATION FAX Formats The MFJ-1278B lets you receive and transmit FAX. The FAX modulat

MFJ-1278B MULTI-MODE BASIC OPERATION FAX Frequency FAX transmitting stations are usually found on the HF bands. W

MFJ-1278B MULTI-MODE BASIC OPERATION Receiving FAX From command mode, the MFJ-1278B can be set to FAX mode by typi

MFJ-1278B MULTI-MODE BASIC OPERATION After selecting the desired FAX mode, type K to leave command mode and enter

MFJ-1278B MULTI-MODE BASIC OPERATION Display FAX Picture on Computer Screen & Save it to Disk The MFJ-1278B fi

MFJ-1278B MULTI-MODE BASIC OPERATION The number of graphics characters, "nnn", following a FAX frame hea

MFJ-1278B MULTI-MODE BASIC OPERATION After unbiasing: bit # 7 6 5 4 3 2 1 0 data x x

MFJ-1278B MULTI-MODE INTRODUCTION Items supplied with MFJ-1278B/MFJ-1278BT package 1. One MFJ-1278B or MFJ

MFJ-1278B MULTI-MODE BASIC OPERATION The FAX format is changeable by using the FAXMODE command. The MFJ-1278B sup

MFJ-1278B MULTI-MODE BASIC OPERATION The command PIXTONES is used to set the multi-gray levels FAX and SSTV pictur

MFJ-1278B MULTI-MODE BASIC OPERATION PIXTONES Values (HEX) FAX/SSTV Transmit Tones (Hz) $86 1100 (sync) $8E 120

MFJ-1278B MULTI-MODE BASIC OPERATION SLOW SCAN TELEVISION OPERATION The MFJ-1278B opens up a whole new world of di

MFJ-1278B MULTI-MODE BASIC OPERATION SSTV Formats The MFJ-1278B provides a dedicated multi-gray level modem for SS

MFJ-1278B MULTI-MODE BASIC OPERATION Receiving SSTV Pictures Note that if you are using one of the special termina

MFJ-1278B MULTI-MODE BASIC OPERATION After entering the SSTV mode and you have properly selected the correct TV fo

MFJ-1278B MULTI-MODE BASIC OPERATION TVBreaks are arranged in the following format: White gray Black area

MFJ-1278B MULTI-MODE BASIC OPERATION Pixtones command serves the same function as the TVBreak command, but in tran

MFJ-1278B MULTI-MODE BASIC OPERATION Coding: If, prior to unbiasing, the value of the data byte is an ASCII p, q,

MFJ-1278B MULTI-MODE COMPUTER INTERFACING COMPUTER INTERFACING You are now ready to connect your MFJ-1278B to your station's c

MFJ-1278B MULTI-MODE BASIC OPERATION The PIXTONES command defines the gray levels of the SSTV and FAX picture bei

MFJ-1278B MULTI-MODE BASIC OPERATION MFJ-1292 "Picture Perfect" Video Digitizer for the IBM and compatib

MFJ-1278B MULTI-MODE ADVANCED OPERATION ADVANCED PACKET OPERATION This chapter describes some other aspects of Packet operat

MFJ-1278B MULTI-MODE ADVANCED OPERATION So $1B in hexidecimal notation is equal to 27 in standard decimal notation. Table 5

MFJ-1278B MULTI-MODE ADVANCED OPERATION stored in the system EPROM. The bbRAM memory stores most of the parameter values in

MFJ-1278B MULTI-MODE ADVANCED OPERATION The timing of the automatic entry into data-transfer mode depends on whether you or

MFJ-1278B MULTI-MODE ADVANCED OPERATION The following commands set special characters which are active in Converse Mode. Re

MFJ-1278B MULTI-MODE ADVANCED OPERATION The display characteristics of the MFJ-1278B are also modified in Transparent Mode.

MFJ-1278B MULTI-MODE ADVANCED OPERATION A computer file transfer program may be unable to process data fast enough to keep u

MFJ-1278B MULTI-MODE ADVANCED OPERATION Hardware Flow Control Hardware flow control is less likely to depend on the programm

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Computer Interface with MFJ Starter Pack If you are using one of the MFJ Starter Packs, y

MFJ-1278B MULTI-MODE ADVANCED OPERATION The MFJ-1278B can send an automatic identification packet every 9-1/2 minutes when y

MFJ-1278B MULTI-MODE ADVANCED OPERATION You can have your station periodically send an automatic message by enabling "b

MFJ-1278B MULTI-MODE ADVANCED OPERATION Commands Affecting Protocol This section describes some of the commands that affect

MFJ-1278B MULTI-MODE ADVANCED OPERATION 1278B will assume is required for the repeater to drop. If the MFJ-1278B has detect

MFJ-1278B MULTI-MODE ADVANCED OPERATION The wait time is set by the command DWAIT, which specifies 40 ms intervals. If no

MFJ-1278B MULTI-MODE ADVANCED OPERATION signals up to 9600 baud, but an external modem is required for operation above 1200

MFJ-1278B MULTI-MODE ADVANCED OPERATION If you want to monitor stations selectively, you can set up a list of up to eight ca

MFJ-1278B MULTI-MODE ADVANCED OPERATION Multiple connection capability is a very powerful addition to the MFJ-1278B. It is

MFJ-1278B MULTI-MODE ADVANCED OPERATION If all this seems a bit confusing, don't worry, it is! The only way to really

MFJ-1278B MULTI-MODE ADVANCED OPERATION Setting Up your Easy-Mail Mailbox The MFJ Easy-Mail Mailbox can now be operated inde

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Many computers require a serial port adapter card. These cards incorporate the circuitry

MFJ-1278B MULTI-MODE ADVANCED OPERATION Your MFJ-1278B will respond with: |K[MFJ-2.1a-IH$] Mailbox ready n free Mailbox (B,

MFJ-1278B MULTI-MODE ADVANCED OPERATION Flag: The message Flag is now very important. All of flags can be set via the S (s

MFJ-1278B MULTI-MODE ADVANCED OPERATION K## Allows you kill the message in slot nn, where nn is a particular slot number. R

MFJ-1278B MULTI-MODE ADVANCED OPERATION R This command lets you read messages addressed to you. When you list the messages

MFJ-1278B MULTI-MODE ADVANCED OPERATION Mailbox Operation This section will depict the use of the Easy Mail™ mailbox from a

MFJ-1278B MULTI-MODE ADVANCED OPERATION The Mailbox will respond with: Send msg; Control-Z or /EX to end: _ The remote use

MFJ-1278B MULTI-MODE ADVANCED OPERATION B. You can perform a Global Kill on a group of messages which are under the same ca

MFJ-1278B MULTI-MODE ADVANCED OPERATION 6. Anyone who accesses the Mailbox can read messages or that are addressed to him/h

MFJ-1278B MULTI-MODE ADVANCED OPERATION This is the only way the remote users can access your Mailbox. If you stay in the S

MFJ-1278B MULTI-MODE ADVANCED OPERATION The command used to forward a message is FO. All forwards must be done in the stream

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Commodore C64, C128 and VIC-20 The MFJ-1278B has a built-in TTL-level port for interfacin

MFJ-1278B MULTI-MODE ADVANCED OPERATION The Mailbox has the capability to be remotely controlled. A callsign can be specifi

MFJ-1278B MULTI-MODE ADVANCED OPERATION You have new mail! This is basically the same as the You have mail! message, but thi

MFJ-1278B MULTI-MODE ADVANCED OPERATION Slotting and Acknowledgment Priority The addition of the SLOTTING AND ACKNOWLEDGMENT

MFJ-1278B MULTI-MODE ADVANCED OPERATION Once the FRACK timer times out, even if the ACK finally makes it through before the

MFJ-1278B MULTI-MODE ADVANCED OPERATION Enforcing a channel access delay for all stations on the channel for whom the packet

MFJ-1278B MULTI-MODE ADVANCED OPERATION Some HTs and every Azden PCS-2000s that I have ever seen are incapable of operating

MFJ-1278B MULTI-MODE ADVANCED OPERATION The actual value used will depend on the average number of queued up stations there

MFJ-1278B MULTI-MODE ADVANCED OPERATION Initial Parameter Settings Summary The settings for use at 1200 baud on a VHF FM cha

MFJ-1278B MULTI-MODE ADVANCED OPERATION While these settings seem extremely long, they will assure that the stations NOT usi

MFJ-1278B MULTI-MODE ADVANCED OPERATION Packet Picture Transfer The MFJ-1278B gives you the unique ability to transmit and r

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Radio Shack Color Computer The Color Computer series (except for the Micro Color Compute

MFJ-1278B MULTI-MODE ADVANCED OPERATION DETAILED HF PACKET OPERATION Here we will go into further detail on the HF Packet mo

MFJ-1278B MULTI-MODE ADVANCED OPERATION NOTE: Regardless of the type of modem, whether or not the modem has audio filtering

MFJ-1278B MULTI-MODE ADVANCED OPERATION If the HF radio is to be dedicated to packet use, the 500 Hz filter can be installed

MFJ-1278B MULTI-MODE ADVANCED OPERATION If your radio has no provision for IF shift, you will have to determine the center f

MFJ-1278B MULTI-MODE ADVANCED OPERATION 5. Many of the stations on HF packet have no tuning indicator at all and many other

MFJ-1278B MULTI-MODE ADVANCED OPERATION The adjustment is very easy to perform. Simply tune the radio to a channel which ha

MFJ-1278B MULTI-MODE ADVANCED OPERATION 4. Rapidly type a string of 15 to 20 carriage returns <CR>. This will cause

MFJ-1278B MULTI-MODE ADVANCED OPERATION The above method of calling CQ is NOT appropriate for use on one of the crowded call

MFJ-1278B MULTI-MODE ADVANCED OPERATION Here are a few simple suggestions for operating HF packet that should help to get yo

MFJ-1278B MULTI-MODE ADVANCED OPERATION 6. Restrict your use of beacon transmissions as much as possible. If you MUST use

MFJ-1278B MULTI-MODE COMPUTER INTERFACING If your computer is configured as DCE, you will have to wire pin 2 of your MFJ-1278B to p

MFJ-1278B MULTI-MODE ADVANCED OPERATION Once the operating parameters have been selected, set KISS ON and then issue a RESTA

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS COMMAND PREFACE This chapter serves as a complete reference to all the MFJ-1278B operatio

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS This reminds you of what you have done, and indicates that the value has been successfull

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters There are several types of parameters. Some parameters can have one of only t

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS means that the command CONNECT requires a callsign argument, call1. You may optional

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS COMMAND EXPLANATION 8BITCONV ON/OFF Mode: Packet Def

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS 16LEVELS ON/OFF Mode: FAX/SSTV Default:ON Parameters: O

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS ACKPRIORITY ON/OFF Mode: Packet Default: ON ACKPRIOR

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS ALTCALL ssss Mode: AMTOR Default: blank Parameter: sss

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS ANSWRQRA ON/OFF Mode: Packet Default: ON Parameter

MFJ-1278B MULTI-MODE COMPUTER INTERFACING TERMINAL SOFTWARE REQUIREMENTS Any software package that enables your computer to act as

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS The ARQ command initiates a Mode A "ARQ" link. ssss is the SELCAL of the statio

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS ASPECT n Mode: FAX Default: 3 Parameter:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS AUTOBAUD ON/OFF Mode: All Default: ON Parame

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS AUTOLF ON/OFF Mode: Packet Default: ON Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS AUTOTRAC ON/OFF Mode: CW Default:ON Parameter

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS AX25L2V2 ON/OFF Mode: Packet Default: ON Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS AXHANG n Mode: Packet Default: 0 Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS BEACON EVERY|AFTER n Mode: Packet Default: EVERY 0 Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS BKONDEL ON/OFF Mode: Packet Default: ON Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS BLP ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Commodore C64, C128 and VIC-20 The optional Starter Pack for the C-64, C-128 and VIC-20 i

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS BTEXT text Mode: Packet Default: ""

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS BUF n Mode: CW/RTTY/ASCII Default: empty Parameter: n = 0 thru 9 A

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS BWNL ON/OFF Mode: AMTOR Default: OFF BWNL controls whet

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CALSET n Mode: All Default: NONE Parameters: n

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CANPAC n Mode: Packet Default: $19 Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CBELL ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CCITT ON/OFF Mode: RTTY Default: ON The CCITT par

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CHECK n Mode: Packet Default: 30 Parameters: n

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameter: nnn Where the nnn variable equals 0 <=n<=255 The CHOChar command is us

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CMDTIME n Mode: Packet Default: 1 Parameters:

MFJ-1278B MULTI-MODE TABLE OF CONTENTS FSK CONNECTION...

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Radio Shack Color Computer There are several terminal programs available for the Color Co

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CONPERM ON/OFF Mode: Packet Default: OFF Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CMSG ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS COMMAND n Mode: All Default: $03 Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CONMODE CONVERS/TRANS Mode: Packet Default: CONVERS Parameters: C

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CONNECT call1 [Via call2[,call3...,call9]] Mode: Packet Immediate Command Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CONOK ON/OFF Mode: Packet Default: ON Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CONSTAMP ON/OFF Mode: Packet Default: OFF Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CPACTIME ON/OFF Mode: Packet Default: OFF Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CTEXT text Mode: Packet Default: ""

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CWCALL ssss Mode: Amtor Default: blank Where "

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Pin 3 Receive Data The Receive Data pin is an output line from the MFJ-1278B on which the

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CWSENDCH nnn Mode: CW Default:$FF Parameter:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS DAYTIME date&time Mode: Packet No default Pa

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS DAYUSA ON/OFF Mode: Packet Default: ON Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS DEADTIME nnn Mode: Packet Default: 33 Parameter:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS DELETE ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS DIGIPEAT ON/OFF Mode: Packet Default: ON Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS DISPLAY [class] Mode: All Immediate Command Parameters: cl

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS BBFAILED: Counts number of times bbRAM checksum was in error. DIGISENT: Each frame dig

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RXERRORS: Increments each time a received frame is thrown out due to it being too short,

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS DISPLAY is an immediate command, and with no class parameter will cause all control param

MFJ-1278B MULTI-MODE COMPUTER INTERFACING time the MFJ-1278B signs on you will not need to press the return key to execute the Auto

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS EAS ON/OFF Mode: CW/RTTY/ASCII Default: OFF Parameter: ON Enables

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS ECho ON/OFF Mode: Pactor Default ON Paramet

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS ESCAPE ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS FARNSWOR ON/OFF Mode: CW Default: ON Parameter

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS FAXNEG ON/OFF Mode: FAX Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS FLOW ON/OFF Mode: Packet Default: ON Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters: n 1 - 15, specifying frame acknowledgment time-out in 1 second intervals.

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS GRAPHLF ON|OFF Mode: FAX/SSTV Default: OFF Parameters: ON

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS HEALLED ON/OFF Mode: Packet Default: OFF Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS ID Mode: Packet Immediate Command ID is an immediate command.

MFJ-1278B MULTI-MODE COMPUTER INTERFACING VERIFYING SERIAL PORT OPERATION Now that you have a terminal program and the connecting c

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS KILONFWD ON/OFF Mode: Mailbox Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Lc callsign Mode: Pactor Immediate Command Initiates an ARQ li

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters: ON The MFJ-1278B will translate the character immediately following the

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS LFADD ON|OFF Mode: ASCII/Packet Default: OFF When LFADD is ON a

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS LISTEN Mode: AMTOR Immediate Command LISTEN is used to begin monito

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MAILBOX ON/OFF Mode: Packet Default: ON Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS B Logout: Initiates a disconnect sequence from the mailbox. Edit This allows you to Ed

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MARSMODE n Mode: RTTY/ASCII Default: 0 n n=0 to 3 if n

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MATCH ON/OFF Mode: AMTOR Default: ON MATCH is used fo

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MAXSum nn Mode: Pactor Default: 30 Parameters:

MFJ-1278B MULTI-MODE COMPUTER INTERFACING The MFJ-1278B has a parallel printer port in which to attach a parallel printer. The par

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MCOM ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MCTEXT text Mode: Mailbox Default: " "

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MHCLEAR Mode: Packet Immediate Command MHCLEAR is an immediate

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameter: ON Enables printing Non-Printable Characters. OFF Discards all Packets co

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MRPT ON/OFF Mode: Packet Default: ON Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MSTAMP ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MULTIFAX ON/OFF Mode: FAX Default: OFF Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MYcall callsign Mode: Pactor Default: MFJPACTR The MYCALL com

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS MYHIERAD Text Mode: Mailbox Default: " "

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS NAVTEX ON/OFF Mode: Navtex Default:OFF Parameters:

MFJ-1278B MULTI-MODE COMPUTER INTERFACING Printer Consideration The MFJ-1278B printer port will work with any printer that is compa

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS NAVMSG Mode: Navtex Default: ALL The NAVMSG command

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS NO200 ON/OFF Mode: Pactor Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS NODEPATH text string Mode: Mailbox Default:" &q

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters: ON <NULL> characters are sent to the terminal following <LF> c

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS OMLC ON/OFF Mode: AMTOR Default: OFF Parameters: ON C

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters: n 0 - 3, selecting a parity option from the table below. This command set

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters: nnn: 0<=nn<=255 The Pactor PASS command is the same as the PASS comma

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS PIXTONES n Mode: FAX/SSTV Default: (see below) Parameters: n = $aa

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS The PIXTONES values are in Hexidecmal format. If the picture transmitted does not seem t

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS PKTPIX ON/OFF Mode: Packet Immediate Command PKTPIX is an immedi

MFJ-1278B MULTI-MODE RADIO INTERFACING RADIO INTERFACING Computer interfacing, covered in the previous chapter, is only

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS PRINTGRA ON/OFF Mode: FAX/SSTV Default: ON For FAX and SS

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS The PROfmars command causes the MFJ-1278B to set itself up for MARS operations. The MFJ

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS QRT Mode: AMTOR Immediate Command The QRT command is an immediate

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RBITMASK $xx Mode: RTTY/ASCII Default: 0 Parameters: $xx

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS REDISPLA n Mode: All Default: $12 Parameter

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RESTART Mode: All RESTART is an immediate command. It re-initializes the MFJ-127

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RETries nnn: 0<=nn<=255 Mode: Pactor Default:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RFE ON/OFF Mode: AMTOR Default: OFF Parameters: ON

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RXBLOCK ON/OFF Mode: Packet Default: OFF Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RXBRIGHT n Mode: FAX/SSTV Default: 4 Parameter: n

MFJ-1278B MULTI-MODE RADIO INTERFACING RADIO PORTS CONNECTION The MFJ-1278B gives the user two (2) radio ports. This a

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RXCAL Mode: All Immediate Command RXCAL is an immediate c

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS CALSET Adjustment & Location Map This is a map of the physical locations of the adju

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS RVFALWAY ON/OFF Mode: Mailbox Default: ON Parameters

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters: n 0 - $7F, specifying an ASCII character code. This command selects the ch

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS SETUP Mode: ALL Default: see table below All possible baud rat

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS SLOTS nnn Mode: Packet Default: 3 Parameter:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS SRXALL ON/OFF Mode: AMTOR Default: ON The MFJ-1278B w

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS STOP n Mode: All Default: $13 Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS STREAMCA ON/OFF Mode: Packet Default: OFF Parameter

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS STREAMDB ON|OFF Mode: Packet Default: OFF Parameter

MFJ-1278B MULTI-MODE RADIO INTERFACING HANDHELD RADIO CONNECTION Some HTs key the transmitter by drawing a small amount

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS When the MAILBOX is ON, the System Operator can access the mailbox by typing the immedia

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TRACE ON/OFF Mode: Packet Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TRANS Mode: Packet Immediate Command This is an immediate comm

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TRIES n Mode: Packet Default: NONE Parameters: n = 0

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TVBREAKS n Mode: SSTV Default: (see below) Parameters: n

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TVMODE n Mode: SSTV Immediate Command Parameter: n = 1 to 5;

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TVX ON/OFF Mode: SSTV Default: OFF Parameters:

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TXDelay n Mode: Pactor Default: 2 (60ms) Parameters: n

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TXDIDDLE ON/OFF Mode: Packet Default: OFF Parameter

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TXFLOW ON/OFF Mode: All Default: OFF Parameter

MFJ-1278B MULTI-MODE RADIO INTERFACING RADIO INTERFACING METHODS The MFJ-1278B allows radio connection without any modi

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS TXUIFRAME ON/OFF Mode: Packet Default: ON TXUIFRAME

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS UNSHIFT ON/OFF Mode: RTTY Default: ON In Baudot R

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS VISTICKS nnnn Mode: SSTV Default:0 Parameters: nnnn 0

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS WAitdisc nn Mode: Pactor Default: 20 Parameter

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS Parameters: ON XON/XOFF flow control is enabled. OFF XON/XOFF flow control is disabl

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS XOff nn Mode: Pactor Default: ^S Parameters:

MFJ-1278B MULTI-MODE SYSTEM MESSAGES MFJ-1278B SYSTEM MESSAGES This chapter describes the messages your MFJ-1278B m

MFJ-1278B MULTI-MODE SYSTEM MESSAGES too many packets outstanding This message would appear in response to a CONVERS

MFJ-1278B MULTI-MODE SYSTEM MESSAGES Not found This message occurs when one attempts to read or kill a non-existent

MFJ-1278B MULTI-MODE SYSTEM MESSAGES ?not enough You did not give enough arguments for a command that expects severa

MFJ-1278B MULTI-MODE TABLE OF CONTENTS CONNECT...

MFJ-1278B MULTI-MODE RADIO INTERFACING 3. With the MFJ-1278B keying the transmitter and transmitting the higher of th

MFJ-1278B MULTI-MODE SYSTEM MESSAGES Link Status Messages These messages inform you of the status of AX.25 connectio

MFJ-1278B MULTI-MODE SYSTEM MESSAGES *** CONNECTED to: call1 [VIA call2[,call3...,call9]] This message appears when

MFJ-1278B MULTI-MODE SYSTEM MESSAGES FRMR rcvd: This message is followed by a display of the FRMR packet received in

MFJ-1278B MULTI-MODE HARDWARE HARDWARE This chapter details the specifications and the functional desc

MFJ-1278B MULTI-MODE HARDWARE bbRAM Non-volatile storage of all important operating parameters is acco

MFJ-1278B MULTI-MODE HARDWARE Other integrated circuits are used for functions including clock oscilla

MFJ-1278B MULTI-MODE HARDWARE Inverter U10e buffers the radio port "16x" baud-rate signal in

MFJ-1278B MULTI-MODE HARDWARE Watch-dog Timer Inverters U7c, U7d, U7e, and Q10 and Q20 provide a "

MFJ-1278B MULTI-MODE HARDWARE Transistors Q5 and Q6 are used to isolate the battery from the +5 volt l

MFJ-1278B MULTI-MODE HARDWARE Some serial I/O ports do not implement CTS, DTR and DSR handshaking. If

MFJ-1278B MULTI-MODE RADIO INTERFACING The bandwidth of the receiver audio will have an effect on modem sensitivity to

MFJ-1278B MULTI-MODE HARDWARE JUMPER FUNCTIONS The following table lists the function of each jumper o

MFJ-1278B MULTI-MODE HARDWARE Table 8-1: Jumper Function (Cont.) Jumper # Position Function JMP

MFJ-1278B MULTI-MODE HARDWARE Table 8-1: Jumper Function (Cont.) Jumper # Position Function JMP

MFJ-1278B MULTI-MODE HARDWARE NOTE: * When JMP23 is shorted, it will RESET the MFJ-1278B. This me

MFJ-1278B MULTI-MODE HARDWARE TTL INTERFACE PORT PIN FUNCTION,J5 The MFJ-1278B provides the user with

MFJ-1278B MULTI-MODE HARDWARE MULTI-LEVEL INTERFACE CONNECTOR,J13 The MFJ-1278B provides the user with

MFJ-1278B MULTI-MODE HARDWARE MODEM DISCONNECT HEADER, J4 The modem disconnect header, J4, on the MFJ-

MFJ-1278B MULTI-MODE HARDWARE Pin 5 SIO RTS Output This signal is used for transmitter activation. Th

MFJ-1278B MULTI-MODE HARDWARE Pin 13 Receive Clock Input This pin is tied to the SIO receive clock inp

MFJ-1278B MULTI-MODE TROUBLESHOOTING TROUBLESHOOTING WARNING: Never remove or insert an IC with power on! Your MFJ-1

MFJ-1278B MULTI-MODE RADIO INTERFACING Fig. 3-7 External Interface Box If you built the external interface box as i

MFJ-1278B MULTI-MODE TROUBLESHOOTING Step 1: Power Supply The first thing to check in any malfunction is the power su

MFJ-1278B MULTI-MODE TROUBLESHOOTING Step 4: Cabling Problems Inspect the interconnection cabling. Does it work on a

MFJ-1278B MULTI-MODE TROUBLESHOOTING Verify that there is activity on the control bus READ and WRITE lines, the 3 CH

MFJ-1278B MULTI-MODE TROUBLESHOOTING Symptom: Uncopyable transmitted or received packets If no one seems able to deco

MFJ-1278B MULTI-MODE TROUBLESHOOTING Symptom: The MFJ-1278B appears to be signing on but only gibberish is printed on

MFJ-1278B MULTI-MODE PACKET RADIO PROTOCOL PACKET RADIO PROTOCOL EXPLANATION OF PROTOCOL The intention of this chapter is to give t

MFJ-1278B MULTI-MODE PACKET RADIO PROTOCOL Level two accomplishes this task by partitioning data to be transferred by level one int

MFJ-1278B MULTI-MODE PACKET RADIO PROTOCOL The communications chip recognizes the opening and closing flags and passes the address,

MFJ-1278B MULTI-MODE PACKET RADIO PROTOCOL provided by the TRACE command. Some texts, including the AX.25 protocol specification,

MFJ-1278B MULTI-MODE PACKET RADIO PROTOCOL RNR The RNR frame is used when the buffer space on the receiving side is full. REJ Used

MFJ-1278B MULTI-MODE RADIO INTERFACING Transmit Audio Level Adjustment for Interface Method II 1. Turn on the MFJ-1278

MFJ-1278B MULTI-MODE PACKET RADIO PROTOCOL CHANNEL USE AND TIMING FUNCTIONS The following discussions mention timing parameters whi

MFJ-1278B MULTI-MODE PACKET RADIO PROTOCOL through the same digipeaters to the originating station. Since the digipeated packets a

MFJ-1278B MULTI-MODE APPENDIX A RADIO HOOKUP RADIO HOOKUP Table: A-1 HOOKUP FOR SPECIFIC RADIOS MFGS. OR RADIOS CONNECTOR TYPE MIC. A

MFJ-1278B MULTI-MODE APPENDIX A RADIO HOOKUP Table A-1.2 Other Radio Connections MFGS. OR RADIOS CONNECTOR TYPE MIC. AUDIO To pin 1 of

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION MODEM CALIBRATION The MFJ-1278B Modem is factory calibrated to operate all the operational modes

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION 7. Adjust R77 for 2200Hz +/- 2Hz. Press the SPACE BAR. 8. Adjust R105 for 2295Hz +/- 2Hz. Pr

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION 15. Press the SPACE BAR, the MFJ-1278B will display: Multilevel demod: 307 {154}KHz. 1550 Hz:

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION NOTE: If recalibrating the VB modem for Low Tone RTTY, then remove the jumpers from JMP E, F, G,

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION Comprehensive Alignment Procedure It is important that the tuning indicator alignment be optimize

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION 8. Adjust R106 carefully until both the "CON" and "STA" LEDs on the front pa

MFJ-1278B MULTI-MODE RADIO INTERFACING Receiver Audio Setting The modem in your MFJ-1278B is equipped with an advanced

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION 5. Command the MFJ-1278B to do a demodulator calibration by typing "RXCAL <CR>".

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION 3. Command the calibration routine to send 50 percent duty cycle square wave data from the modul

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION MFJ-1278B Adjustment Location Map This is a map of the physical locations of the adjustment pote

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION Calset Values for Various Modulator Tone Frequencies Tone CALSET # Adjust Modem / Remarks 2125

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION CW MODEM TUNE-UP PROCEDURE The CW modem in the MFJ-1278B is fundamentally different from the othe

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION Detailed CW Demodulator Alignment Procedure 1. Determine the required Fc for the demodulator. I

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION b. Place a scope probe on the top pin of JMP10, the pin furthest from Q14). The oscilloscope wi

MFJ-1278B MULTI-MODE APPENDIX B MODEM CALIBRATION NOTE: If you have a square wave on the scope face but the tuning indicator is not near center, yo

MFJ-1278B MULTI-MODE APPENDIX C AUDIO OUTPUT AUDIO OUTPUT CALIBRATION The transmit audio output levels of MFJ-1278B Radio Port 1 and

MFJ-1278B MULTI-MODE APPENDIX C AUDIO OUTPUT 8. Move the probe to J9 pin 4, RX audio. The signal should be approximately 1 V p-p.

MFJ-1278B MULTI-MODE RADIO INTERFACING MONITOR SPEAKER CONNECTION The MFJ-1278B has a built audio amplifier to provide

MFJ-1278B MULTI-MODE APPENDIX D HF RADIO HF RADIO ALIGNMENT If you have determined that it is necessary to realign the MF

MFJ-1278B MULTI-MODE APPENDIX D HF RADIO SECOND METHOD: FILTER SKIRT AVERAGE FREQUENCY 1. Set the receiver to LSB mode wi

MFJ-1278B MULTI-MODE APPENDIX E CONVERTING TO TNC-2 CONVERTING THE MFJ-1278B TO "LIKE-TNC 2" With a simple modification as described in thi

MFJ-1278B MULTI-MODE APPENDIX E CONVERTING TO TNC-2 3. Construct Header U28 by connecting pins 2, 5, 6, 12, 15 and 19 to ground pin 10. Connect pi

MFJ-1278B MULTI-MODE APPENDIX F 2400 BPS PACKET MFJ-1278B 2400 BPS PACKET If your MFJ-1278B does not have the 2400 bps packet capabilit

MFJ-1278B MULTI-MODE APPENDIX F 2400 BPS PACKET 2400 BPS Receive Audio Setting The MFJ 2400 modem employs automatic gain control (AGC)

MFJ-1278B MULTI-MODE APPENDIX G: JUMPER FUNCTIONS JUMPER FUNCTIONS AND LOCATIONS The MFJ-1278B mother board has many jumper connectors. Each jumpe

MFJ-1278B MULTI-MODE APPENDIX G: JUMPER FUNCTIONS Table G-1: Jumper Function (Cont.) Jumper # Position Function JMP18 Pin 1 & 2 (default) E

MFJ-1278B MULTI-MODE APPENDIX G: JUMPER FUNCTIONS Table G-1: Jumper Function (Cont.) JMPF*** ON (default) Disable Low Tone RTTY Demod OFF Ena

MFJ-1278B MULTI-MODE APPENDIX G: JUMPER FUNCTIONS Fig. G-1: Jumper Connector Location

MFJ-1278B MULTI-MODE RADIO INTERFACING CW INSTALLATION The MFJ-1278B user can send and receive CW by using your compute

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY COMMAND SUMMARY Command Parameter Default Mode Function Page 8BITCONV ON|OFF off Packet Enable

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page BKONDEL ON|OFF on Packet Determines the way the

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page CONPERM ON|OFF off Packet Allows a connection to

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page DEADTIME nnn 33(330Ms) Packet Determines the bas

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page FEC -- I-command AMTOR Initiates the broadcastin

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page LFADDALT ON|OFF on RTTY Enables the MFJ-1278B to

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page MRPT ON|OFF on Packet Affects the way monitored

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page PACTIME n10 Packet Determines the length of time

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page RETries nnn I-command Pactor Specifies number of

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page STREAMSW n $7C (|) Packet Selects the character

MFJ-1278B MULTI-MODE RADIO INTERFACING FSK CONNECTION If your HF radio permits FSK operation, an FSK output is provided

MFJ-1278B MULTI-MODE APPENDIX H COMMAND SUMMARY Command Parameter Default Mode Function Page TXUIFRAME ON|OFF on Packet Used to tell the MFJ-

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ-1278B/1278BT PARTS LIST MFJ P/N Descrpition Component ID RESISTOR

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST R27, R37, R42 R72, R43 R20, R31, R64, R65, R133

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID TRIMPOTS, BOURNS OR EQUAL 108-6014

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 201-1210 .1 UF, Z5U, 20% C1, C

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID CAPACITOR: OTHER TYPES 203-8010 1 U

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 312-2512 27C1001, CMOS EPROM, U23

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 310-3138 74HC138, 3-to-8 LINE DECODE

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 305-0001 2N3904, GENERAL PURPOSE NPN

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 601-6021 2.0 MM PIN, COAXIAL JACK,

MFJ-1278B MULTI-MODE BASIC OPERATION GETTING STARTED This chapter will guide you through the basic operation on al

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 715-8082 6-32 x .5" Hex or roun

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 806-0210-1278 CABINET COVER. NOTE:

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 205-1210 .1 UF, Z5U, 20% C209

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID Capacitor: Monolithic Ceramic 205-12

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID BOM for 2400 Baud Modem PC Assembly: P/

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 100-0042 1.8 M R53 100-008

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID DIODES: 300-0003 1N4148 D1,

MFJ-1278B MULTI-MODE APPENDIX I PARTS LIST MFJ P/N Descrpition Component ID 625-0292 28 PIN MISCELLANEOUS: 405

MFJ-1278B MULTI-MODE MANUAL INDEX Manual Index * *.ix Identification packet, callsign text, 254 < <CR&g

MFJ-1278B MULTI-MODE MANUAL INDEX Automatic operations, transmit operation, 128, 305 AUTOTRAC, 72 AWLEN, 278

MFJ-1278B MULTI-MODE BASIC OPERATION followed by a carriage return. Now let's try entering your callsign usi

MFJ-1278B MULTI-MODE MANUAL INDEX Clock, NRZ to NRZI encoder, 318 Clock, speed selection, 317 Collision, avoi

MFJ-1278B MULTI-MODE MANUAL INDEX Commands, AUTOLF, 185 Commands, AUtolf, 185 Commands, AUTOTRAC, 186 Command

MFJ-1278B MULTI-MODE MANUAL INDEX Commands, CWIDMODE, 214 Commands, CWSENDCH, 215 Commands, CWSPEEDM, 215 Com

MFJ-1278B MULTI-MODE MANUAL INDEX Commands, ID, 234, 235 Commands, Id, 234 Commands, IDTIME, 235 Commands, K

MFJ-1278B MULTI-MODE MANUAL INDEX Commands, MYcall, 255 Commands, MYDLCNUM, 255 Commands, MYHIERAD, 256 Comma

MFJ-1278B MULTI-MODE MANUAL INDEX Commands, RVFALWAY, 282 Commands, RXBLOCK, 278 Commands, RXBRIGHT, 279 Comm

MFJ-1278B MULTI-MODE MANUAL INDEX Commands, UNPROTO, 190 Commands, UNSHIFT, 302 Commands, URepeats, 302 Comma

MFJ-1278B MULTI-MODE MANUAL INDEX Converse Mode, entry from Command Mode, 119, 210, 259, 309 Converse Mode, e

MFJ-1278B MULTI-MODE MANUAL INDEX Diodes, incorrect installation, 332 DIP header, U15, 319 DISC frames, 342 D

MFJ-1278B MULTI-MODE MANUAL INDEX F FARnswor, 73, 75 FARNSWORTH CW, 75 FCS\, HDLC field, 338 Fig. 2-1. Seria

MFJ-1278B MULTI-MODE TABLE OF CONTENTS Summary of AMTOR Contact Sequence...

MFJ-1278B MULTI-MODE BASIC OPERATION Parity and Word Length If you are using one of the optional MFJ Starter Packs

MFJ-1278B MULTI-MODE MANUAL INDEX I I frames, 340 IBM PCjr, 8 IBM PCjr, serial port interfacing, 8 IBM PCjr,

MFJ-1278B MULTI-MODE MANUAL INDEX L LED normal power-up display, 333 Line Spacing, packet text, 130 Line wrap

MFJ-1278B MULTI-MODE MANUAL INDEX Monitoring, selected stations, 137 Monitoring, time stamping, 253 Monitorin

MFJ-1278B MULTI-MODE MANUAL INDEX Power supply, troubleshooting, 332 Power-on reset, 319 Power-on reset, LED

MFJ-1278B MULTI-MODE MANUAL INDEX RS-232C, 4 RS-232C signals, Clear To Send, 15, 125 RS-232C signals, Data Ca

MFJ-1278B MULTI-MODE MANUAL INDEX signal lock, 72 SLOTTING, 153 Software UART, Color Computer, 13 Special Cha

MFJ-1278B MULTI-MODE MANUAL INDEX Timing, Transparent Mode escape, 203 TNC 1, AX.25 Level 2 version, 187 TNC

MFJ-1278B MULTI-MODE BASIC OPERATION New Lines and Line Wrapping If everything displayed appears to be double-spac

MFJ-1278B MULTI-MODE BASIC OPERATION THE MFJ-1278B MULTI-MODE MODEM The MFJ-1278B modem has five sets of pre-set m

MFJ-1278B MULTI-MODE BASIC OPERATION OPERATIONAL MODES Verifying Operation Status Upon initial power up, the MFJ-1

MFJ-1278B MULTI-MODE BASIC OPERATION On the CW, MCW and Memory Keyer operation modes, instead of selecting a baud

MFJ-1278B MULTI-MODE BASIC OPERATION Loading the Memory Buffers The ten memory buffers are empty when the MFJ-1278

MFJ-1278B MULTI-MODE BASIC OPERATION Memory Repeat and Buffer Repeat Time Of the ten memory buffers provided by th

MFJ-1278B MULTI-MODE BASIC OPERATION Note: If BUFTIME is a non-zero value, MFJ-1278B will automatically release t

MFJ-1278B MULTI-MODE BASIC OPERATION PACKET OPERATION VHF Packet If you are not familiar with packet operation, th

MFJ-1278B MULTI-MODE BASIC OPERATION The <ENTER> causes your message to be put into a packet, or "packe

MFJ-1278B MULTI-MODE TABLE OF CONTENTS Packet Timing...

MFJ-1278B MULTI-MODE BASIC OPERATION Be sure to remove the jumper from JMP10 after you complete this "Connec

MFJ-1278B MULTI-MODE BASIC OPERATION Unsuccessful Connections Sometimes you will initiate a connect sequence that

MFJ-1278B MULTI-MODE BASIC OPERATION Since you are not connected to another station your packets are sent to the a

MFJ-1278B MULTI-MODE BASIC OPERATION Your First Packet QSO Although there are still a number of features you shoul

MFJ-1278B MULTI-MODE BASIC OPERATION Exchange several messages to get a feel for this new mode. If you monitor th

MFJ-1278B MULTI-MODE BASIC OPERATION Monitoring on the Air This is a good time to try out the MFJ-1278B's mon

MFJ-1278B MULTI-MODE BASIC OPERATION If you make several mistakes in a line, or if you change your mind, you may

MFJ-1278B MULTI-MODE BASIC OPERATION BASIC HF PACKET OPERATION The requirements for optimum performance with a typ

MFJ-1278B MULTI-MODE BASIC OPERATION If you cannot contact anyone using another frequency, call CQ on one of the a

MFJ-1278B MULTI-MODE BASIC OPERATION PACTOR In this section of this manual we will talk about PACTOR operation. W

MFJ-1278B MULTI-MODE TABLE OF CONTENTS Link Status Messages...

MFJ-1278B MULTI-MODE BASIC OPERATION Now that we have the MFJ-1278B signed-on to the computer, let's put it i

MFJ-1278B MULTI-MODE BASIC OPERATION PACTOR ARQ For ARQ operation you will need to know the other person's ca

MFJ-1278B MULTI-MODE BASIC OPERATION information how the CON and STA leds react to incoming signals please refer t

MFJ-1278B MULTI-MODE BASIC OPERATION As indicated in the preceding paragraph, the usual terminal/radio/modem parms

MFJ-1278B MULTI-MODE BASIC OPERATION To prevent Uncontrolled Disconnects, we are unable to listen to all kinds of

MFJ-1278B MULTI-MODE BASIC OPERATION AMTOR selective callsign in the "a_cmd:" MYSELCAL parameter. Furth

MFJ-1278B MULTI-MODE BASIC OPERATION PACTOR MAILBOX The MFJ-1278B now includes a new feature called a PACTOR MAILB

MFJ-1278B MULTI-MODE BASIC OPERATION 1. From the cmd: prompt please type the following: MODE PT <ENTER> the

MFJ-1278B MULTI-MODE BASIC OPERATION The MFJ-1278B will respond with the standard cmd: prompt. From the cmd: prom

MFJ-1278B MULTI-MODE BASIC OPERATION Kill Allows the remote user to kill messages that are addressed specifically

MFJ-1278B MULTI-MODE TABLE OF CONTENTS Comprehensive Alignment Procedure...

MFJ-1278B MULTI-MODE BASIC OPERATION If the above conditions are met then all the remote user must type: K <EN

MFJ-1278B MULTI-MODE BASIC OPERATION Read This command lets you read messages addressed to you. When you list the

MFJ-1278B MULTI-MODE BASIC OPERATION 1. First a remote must establish a connection to your Mailbox, via your Pact

MFJ-1278B MULTI-MODE BASIC OPERATION 4. There are two (2) different ways the remote user can kill messages. The

MFJ-1278B MULTI-MODE BASIC OPERATION The Mailbox will respond with a list of currently used slots in the following

MFJ-1278B MULTI-MODE BASIC OPERATION is proper Pactor etiquette. If you access your Mailbox via the SYsop command

MFJ-1278B MULTI-MODE BASIC OPERATION CW OPERATION The MFJ-1278B provides many unique features in the CW mode that

MFJ-1278B MULTI-MODE BASIC OPERATION Receiving CW The MFJ-1278B receives international Morse Code from 1 to 99 WPM

MFJ-1278B MULTI-MODE BASIC OPERATION If the AUTOTRAC command is OFF, then before the MFJ-1278B can copy the tuned

MFJ-1278B MULTI-MODE BASIC OPERATION If CWSEndch is left at the default setting of 255 or $FF, the MFJ-1278B will

MFJ-1278B MULTI-MODE TABLE OF CONTENTS

MFJ-1278B MULTI-MODE BASIC OPERATION Tuning your Radio The MFJ-1278B lets you tune your radio with the TUNE comman

MFJ-1278B MULTI-MODE BASIC OPERATION Setting Up the for Code Practice You can monitor the random code sent by the

MFJ-1278B MULTI-MODE BASIC OPERATION CW CONTEST MEMORY KEYER OPERATION For CW enthusiasts who like to use a key pa

MFJ-1278B MULTI-MODE BASIC OPERATION MODULATED CW OPERATION The MFJ-1278B allows the transmission of CW code pract

MFJ-1278B MULTI-MODE BASIC OPERATION BAUDOT RTTY & ASCII OPERATION The user can configure the MFJ-1278B RTTY/A

MFJ-1278B MULTI-MODE BASIC OPERATION If you do not specify a baud rate for the RTTY or ASCII modes, the MFJ-1278B

MFJ-1278B MULTI-MODE BASIC OPERATION Note: If the MFJ-1278B is not in transmit mode (i.e. in receive mode), then i

MFJ-1278B MULTI-MODE BASIC OPERATION To enter the converse mode type: K This will take the MFJ-1278B out of the co

MFJ-1278B MULTI-MODE BASIC OPERATION AUTOMATIC SIGNAL ANALYSIS The Automatic Signal Analysis or ASA, feature insta

MFJ-1278B MULTI-MODE BASIC OPERATION In the case of analyzing a 300 baud signal, the MFJ-1278B will prompt the use

MFJ-1278B MULTI-MODE INTRODUCTION INTRODUCTION Welcome to the exciting world of Amateur Digital Communication

MFJ-1278B MULTI-MODE BASIC OPERATION MFJ-1278B will enter converse mode and begin to display text normally. If an

MFJ-1278B MULTI-MODE BASIC OPERATION Once you have set your operating mode, the user must press the K key and a &l

MFJ-1278B MULTI-MODE BASIC OPERATION MARSMODE 1- QSO Mode In the MARS QSO mode the Transmit translations are as fo

MFJ-1278B MULTI-MODE BASIC OPERATION AMTOR OPERATION AMTOR, AMateur Teletype Over Radio), an error correcting

MFJ-1278B MULTI-MODE BASIC OPERATION Examples are: Amateur callsign is N2WX; Amtor MYSELCAL is NNWX Amateur callsi

MFJ-1278B MULTI-MODE BASIC OPERATION Monitoring Mode A, "ARQ" The LISTEN command is useful for monitorin

MFJ-1278B MULTI-MODE BASIC OPERATION AMTOR Status LED Indicators The CON and STA LEDs have special meanings in the

MFJ-1278B MULTI-MODE BASIC OPERATION in idle mode. If you can hear both sides, you can hear the alternate chirps

MFJ-1278B MULTI-MODE BASIC OPERATION You can obtain hardcopy printouts from the bulit-in printer port of the MFJ-1

MFJ-1278B MULTI-MODE BASIC OPERATION NAVTEX OPERATION Navtex is a new direct printing service operating on 518 KHz