Alinco EJ-50U User Manual

Instruction Manual Ver.01

EJ-50U Terminal Node Controller Unit ALINCO,INC

Thank you for purchasing this fine Alinco product. This unit enables data communication when it is properly installed in designated Alinco transceivers. Please read this manual, print the contents if necessary, and keep this disk for future reference.

Since this device is also capable of being used in commercial applications, some of the pages in this manual are intentionally left blank to accommodate those uses in other regions.

Although we attempt to explain the features of this unit in a simple and comprehensive manner, unless you have some knowledge about packet communications and APRS, you may have difficulty understanding the contents of this manual. We apologize, but Alinco cannot provide basic information on how packet and/or APRS functions in general. Please consult your favorite Ham radio stores for books on the subject and/or web-sites that support your area of interest regarding those communication modes. You may also find assistance through a local amateur radio club. You can explore the exciting world of data communications, and we believe that this is a most interesting part of the king of hobbies, Amateur Radio.

APRS

Notice

• This unit should be used with ALINCO transceiver DR-620T/E.

• The parameter settings are retained by the built-in lithium battery. If the settings return to their

Please refer to the Alinco transceivers’ instruction manual for the proper installation of this unit.

Index

1. Description -------------------------------------------------------------------------------------------------- 5

2. Commands --------------------------------------------------------------------------------------------------- 6

3 Connection to a host (PC) --------------------------------------------------------------------------------- 10

is a registered trademark of Bob Bruninga, WB4APR

default values, the battery may be depleted. Should this occur, consult your Alinco dealer.

2-1 command mode and converse mode ---------------------------------------------------------------- 6 2-2 general use of commands ----------------------------------------------------------------------------- 6 2-2-1 Direct commands ------------------------------------------------------------------------------------ 6 2-2-2 Setting parameters ---------------------------------------------------------------------------------- 6 2-2-3 Reconfirming the stored parameters -------------------------------------------------------------- 6 2-3 Error messages ----------------------------------------------------------------------------------------- 6 2-3-1 [?EH] ------------------------------------------------------------------------------------------------- 6 2-3-2 [?BAD],[?RANGE],[?TOO LONG] -------------------------------------------------------------- 6 2-3-3 [?TOO MANY],[NOT ENOUGH] ---------------------------------------------------------------- 6 2-4 Command chart --------------------------------------------------------------------------------------- 7

3-1 communication environment ------------------------------------------------------------------------ 10 3-2 Relative commands ----------------------------------------------------------------------------------- 11 3-2-1 ABAUD commands -------------------------------------------------------------------------------- 11 3-2-2 AWLEN commands -------------------------------------------------------------------------------- 11 3-2-3 PARITY commands -------------------------------------------------------------------------------- 11

3-2-4 ECHO commands ----------------------------------------------------------------------------------- 11 3-2-5 FLOW commands ----------------------------------------------------------------------------------- 11 3-2-6 XFLOW commands -------------------------------------------------------------------------------- 11 3-2-7 AUTOLF commands ------------------------------------------------------------------------------- 12 3-2-8 FLOVER commands --------------------------------------------------------------------------------- 12

4 Communication related commands (as a wireless modem) --------------------------------------------- 12

4-1 Basic commands for the communication ------------------------------------------------------------ 12 4-1-1 HBAUD command ---------------------------------------------------------------------------------- 12 4-1-2 MYCALL command -------------------------------------------------------------------------------- 12 4-1-3 CALIBRAT command ------------------------------------------------------------------------------ 13 4-2 Transmission related commands --------------------------------------------------------------------- 13 4-2-1 PPERSIST command ------------------------------------------------------------------------------- 14 4-2-2 PERSIST command -------------------------------------------------------------------------------- 14 4-2-3 SLOTTIME command ----------------------------------------------------------------------------- 14 4-2-4 DWAIT command ----------------------------------------------------------------------------------- 14 4-2-5 SOFTDCD command ------------------------------------------------------------------------------ 14 4-2-6 TXDELAY command ------------------------------------------------------------------------------ 15 4-2-7 AXDELAY command ------------------------------------------------------------------------------ 15 4-2-8 AXHANG command ------------------------------------------------------------------------------- 15 4-2-9 FULLDUP command ------------------------------------------------------------------------------ 15 4-3 Reception related commands ------------------------------------------------------------------------ 15 4-3-1 PASSALL command ------------------------------------------------------------------------------- 15 4-4 Commands for 2way communications (being connecte) ----------------------------------------- 16 4-4-1 CONNECT command ------------------------------------------------------------------------------ 16 4-4-2 DISCONNE command ----------------------------------------------------------------------------- 16 4-4-3 CONOK command --------------------------------------------------------------------------------- 16 4-4-4 CMSG command ----------------------------------------------------------------------------------- 16 4-4-5 CMSGDISC command ----------------------------------------------------------------------------- 16 4-4-6 RESPTIME command ------------------------------------------------------------------------------ 16 4-4-7 FRACK command ---------------------------------------------------------------------------------- 17 4-4-8 RETRY command ----------------------------------------------------------------------------------- 17 4-4-9 TRIES command ------------------------------------------------------------------------------------- 17 4-4-10 CHECK command ---------------------------------------------------------------------------------- 17 4-4-11 FIRMRNR command ------------------------------------------------------------------------------- 17 4-4-12 CONSTAMP command ---------------------------------------------------------------------------- 18 4-5 Commands without being connected --------------------------------------------------------------- 18 4-5-1 UNPROTO command ----------------------------------------------------------------------------- 18 4-5-2 BEACON command ------------------------------------------------------------------------------- 18 4-5-3 BTEXT command ---------------------------------------------------------------------------------- 18 4-6 Commands to set parameters for packets ---------------------------------------------------------- 18 4-6-1 SENDPAC command ------------------------------------------------------------------------------ 19 4-6-2 CR command --------------------------------------------------------------------------------------- 19 4-6-3 LFADD command --------------------------------------------------------------------------------- 19 4-6-4 PACLEN command ------------------------------------------------------------------------------- 19 4-6-5 PACTIME command ----------------------------------------------------------------------------- 19 4-6-6 CPACTIME command --------------------------------------------------------------------------- 19 4-6-7 MAXFRAME command ------------------------------------------------------------------------- 20 4-7 Monitor related command -------------------------------------------------------------------------- 20

2 4-7-1 MONITOR command ---------------------------------------------------------------------------- 20 4-7-2 MCOM command -------------------------------------------------------------------------------- 20 4-7-3 MCON command -------------------------------------------------------------------------------- 21 4-7-4 MALL command --------------------------------------------------------------------------------- 21 4-7-5 MRPT command --------------------------------------------------------------------------------- 21 4-7-6 TRACE command ------------------------------------------------------------------------------- 21 4-7-7 MSTAMP command ----------------------------------------------------------------------------- 21

5 To connect to GPS ---------------------------------------------------------------------------------------- 21

5-1 What does it do with GPS? ------------------------------------------------------------------------- 21 5-2 Compatible GPS ------------------------------------------------------------------------------------ 22 5-3 Communication environment ---------------------------------------------------------------------- 22 5-3-1 Initial parameter setup --------------------------------------------------------------------------- 22 5-4 Contents of GPS data ------------------------------------------------------------------------------- 22 5-4-1 SONY ---------------------------------------------------------------------------------------------- 22 5-4-2 SMATC -------------------------------------------------------------------------------------------- 23 5-4-3 $GPGGA ------------------------------------------------------------------------------------------ 23 5-4-4 $GPVTG ------------------------------------------------------------------------------------------ 24 5-4-5 $GPZDA ------------------------------------------------------------------------------------------- 24 5-4-6 $GPRMC ------------------------------------------------------------------------------------------ 24 5-4-7 $GPGLL ------------------------------------------------------------------------------------------- 25 5-4-8 $PNTS --------------------------------------------------------------------------------------------- 25 5-4-9 Notes for NMEA-0183 ------------------------------------------------------------------------- 25 5-5 Details of GPS data processing ------------------------------------------------------------------- 26 5-6 GPS related commands ---------------------------------------------------------------------------- 26 5-6-1 GBAUD command ------------------------------------------------------------------------------ 26 5-6-2 LPATH command ------------------------------------------------------------------------------- 27 5-6-3 LOCATION command -------------------------------------------------------------------------- 27 5-6-4 LTEXT command ------------------------------------------------------------------------------- 27 5-6-5 LTMON command ------------------------------------------------------------------------------- 27 5-6-6 LTMHEAD command --------------------------------------------------------------------------- 27 5-6-7 GPSTEXT command ----------------------------------------------------------------------------- 27 5-6-8 NTSGRP command ------------------------------------------------------------------------------- 28 5-6-9 NTSMRK command ------------------------------------------------------------------------------ 28 5-6-10 NTSMSG command ----------------------------------------------------------------------------- 28 5-6-11 GPSSEND command ---------------------------------------------------------------------------- 28

6 Function modes -------------------------------------------------------------------------------------------- 28

6-1 Command mode ------------------------------------------------------------------------------------- 28 6-2 Converse mode -------------------------------------------------------------------------------------- 29 6-2-1 CONVERSE command -------------------------------------------------------------------------- 29 6-2-2 K command ---------------------------------------------------------------------------------------- 29 6-2-3 8BITCONV command --------------------------------------------------------------------------- 29 6-2-4 AFILTER command ------------------------------------------------------------------------------ 29 6-3 Transparent Mode ----------------------------------------------------------------------------------- 29 6-3-1 TRANS command -------------------------------------------------------------------------------- 29 6-3-2 TRFLOW command ----------------------------------------------------------------------------- 30 6-3-3 TXFLOW command ----------------------------------------------------------------------------- 30 6-4 Automatic mode change --------------------------------------------------------------------------- 30 6-4-1 NOMODE command ---------------------------------------------------------------------------- 30

3 6-4-2 CONMODE command -------------------------------------------------------------------------- 30 6-4-3 NEWMODE command -------------------------------------------------------------------------- 30 6-5 KISS mode ------------------------------------------------------------------------------------------ 30 6-5-1 KISS command ----------------------------------------------------------------------------------- 30

7 LED --------------------------------------------------------------------------------------------------------- 30

7-1 DCDLED terminal (CPU #6 pin) ---------------------------------------------------------------- 30 7-2 CONLED terminal (CPU#7 pin) ----------------------------------------------------------------- 30 7-3 STALED terminal (CPU #8 pin) ----------------------------------------------------------------- 30 7-4 PTTLED terminal (CPU #9 pin) ------------------------------------------------------------------ 30 7-5 LED related command ----------------------------------------------------------------------------- 30 7-5-1 HEALLED command ---------------------------------------------------------------------------- 30

8 Digipeat functions ----------------------------------------------------------------------------------------- 30

8-1 Digipeat related commands ------------------------------------------------------------------------ 30 8-1-1 DIGIPEAT command ---------------------------------------------------------------------------- 30 8-1-2 MYALIAS command ---------------------------------------------------------------------------- 30 8-1-3 HID command ------------------------------------------------------------------------------------ 30 8-1-4 ID command -------------------------------------------------------------------------------------- 30 8-2 General information on UI digipeat -------------------------------------------------------------- 32 8-2-1 To eliminate unnecessary relays --------------------------------------------------------------- 32 8-2-2 How to use commands (example of actual ation) ------------------------------------------- 32 8-3 UI digipeat related commands --------------------------------------------------------------------- 32 8-3-1 UICHECK command ---------------------------------------------------------------------------- 32 8-3-2 UIDWAIT command ----------------------------------------------------------------------------- 32 8-3-3 UIDIGI command -------------------------------------------------------------------------------- 33 8-3-4 UIFLOOD command ---------------------------------------------------------------------------- 33 8-3-5 UITRACE command ---------------------------------------------------------------------------- 34 8-3-6 UISSID command ------------------------------------------------------------------------------- 35 8-3-7 NPATH command ------------------------------------------------------------------------------- 36 8-3-8 SPATH command -------------------------------------------------------------------------------- 37 8-3-9 EPATH command -------------------------------------------------------------------------------- 37 8-3-10 WPATH command ------------------------------------------------------------------------------- 37

9 Multi-connect function ----------------------------------------------------------------------------------- 37

9-1 Multi-connect related commands ---------------------------------------------------------------- 37 9-1-1 USERS command ------------------------------------------------------------------------------- 37 9-1-2 STREAMSW command ------------------------------------------------------------------------ 37 9-1-3 STREAMDB command ------------------------------------------------------------------------ 37 9-1-4 LCSTREAM command ------------------------------------------------------------------------ 38 9-1-5 STREAMCA command ------------------------------------------------------------------------ 38

10 Message board function -------------------------------------------------------------------------------- 38 10-1 Setting commands for Message board ---------------------------------------------------------- 38

10-1-1 MBOD command ------------------------------------------------------------------------------- 38 10-1-2 MYCALL command ---------------------------------------------------------------------------- 38 10-1-3 TOUT command -------------------------------------------------------------------------------- 38 10-1-4 ROUTE command ------------------------------------------------------------------------------ 39 10-1-5 OVERKILL command -------------------------------------------------------------------------- 39 10-1-6 EXTCLR command ----------------------------------------------------------------------------- 39 10-1-7 LOG command ---------------------------------------------------------------------------------- 39 10-2 Message operation command (for sysmanager) --------------------------------------------- 39

5 10-2-1 FILE command ----------------------------------------------------------------------- 39 10-2-2 LIST command ------------------------------------------------------------------------ 39 10-2-3 MINE command ----------------------------------------------------------------------- 39 10-2-4 READ command ---------------------------------------------------------------------- 40 10-2-5 WRITE command --------------------------------------------------------------------- 40 10-2-6 KILL command ------------------------------------------------------------------------ 40 10-3 Message Board related LED --------------------------------------------------------------------- 40 10-3-1 MBODLED terminal (CP9 pin) ------------------------------------------------------ 40 10-3-2 MAILLED terminal (CP0 pin) ------------------------------------------------------- 40 10-3-3 MAIL command ------------------------------------------------------------------------ 40 10-4 Message operation command (for --------------------------------------------------------------- 40

10-4-1 W command ---------------------------------------------------------------------------------------- 40

10-4-2 B command ----------------------------------------------------------------------------------------- 41 10-4-3 F command ----------------------------------------------------------------------------------------- 41 10-4-4 M command ---------------------------------------------------------------------------------------- 41 10-4-5 L command ----------------------------------------------------------------------------------------- 41 10-4-6 R command ----------------------------------------------------------------------------------------- 41 10-4-7 A command ----------------------------------------------------------------------------------------- 41 10-4-8 J command ------------------------------------------------------------------------------------------ 41 10-4-9 K command ----------------------------------------------------------------------------------------- 41 10-4-10 H command --------------------------------------------------------------------------------------- 41

11 Miscellaneous commands -------------------------------------------------------------------------------- 42

11-1 Reset / Initialization -------------------------------------------------------------------------------- 42 11-1-1 RESTART command ------------------------------------------------------------------------------ 42 11-1-2 RESET command ---------------------------------------------------------------------------------- 42 11-2 Display the parameter status ---------------------------------------------------------------------- 42 11-2-1 DISPLAY command ------------------------------------------------------------------------------- 42 11-3 date/time setting and display set------------------------------------------------------------------- 42 11-3-1 DAYTIME command ------------------------------------------------------------------------------ 42 11-3-2 DAYUSA command ------------------------------------------------------------------------------- 42 11-3-3 DAYSTAMP command --------------------------------------------------------------------------- 43 11-4 RAM check command ----------------------------------------------------------------------------- 43

11-4-1 RAMTEST command ----------------------------------------------------------------------------- 43

1. Description

The communication protocol of this unit is compatible with AX.25 version 2 Level 2. This enables a reliable connection with CRC check and the re-try function. It is also capable of transmitting without being connected to a node (unproto mode or beacon mode). This protocol is identical to the one conventionally used in a TNC for Amateur Radio. The 9600 bps non-synthesized serial mode is used to connect to a host (computer or terminal). The unit is also enhanced with a GPS connection capability. The EJ-50U processes and converts data from a GPS receiver and re-transmits it as a beacon at predetermined intervals. This advanced feature allows the easy setup of mobile units for GPS position-reporting systems such as APRS.

2. Commands

In this manual, unless otherwise specified, any “key” refers to the keys on a PC keyboard. The “screen” referred to is the PC monitor screen.

2-1 Command mode and Converse mode

The typical operating modes of this unit are the Command mode and the Converse mode. It is necessary to use the command mode to set internal parameters, or execute immediate direct commands in the EJ-50U. When the unit is in the command mode, the “cmd:” prompt will appear on the screen. If “cmd:” does not show up, press enter (or carriage return [CR], or <CTRL+C>). The Converse mode enables the EJ-50U to transmit text as data. Use this mode for sending files and/or text. Press the <Ctrl +C> keys together to return to the command mode.

2-2 General use of the commands

2-2-1: Direct commands The commands without specific definitions or parameter settings are Direct Commands. These are mainly used to change modes. These commands are immediate, such as D for Disconnect.

2-2-2: Setting parameters Type the command parameter name. Enter a space after the parameter name and type the new value. Press [CR] to enter. The screen will show “XXX was YYY”(XXX stands for the parameter, YYY for the previous value). If the parameter setting is ON/OFF, use the Y key for ON, N key to select OFF.

2-2-3: Reconfirming the stored parameters Type the command name only and press [CR] key. The monitor will show “XXX is ZZZ” (ZZZ stands for current value).

2-3: Error messages

2-3-1 [?EH] This prompt will be displayed when the command does not exist or an invalid string is entered.

2-3-2 [?BAD][?RANGE][?TOO LONG] If the entered command does not specify the parameter [?BAD] appears. If the command exceeds the parameter range [?RANGE] appears. If the length of a column is too long, [?TOO LONG] appears.

2-3-3 [?TOO MANY][?NOT ENOUGH] If the parameter value is too long [?TOO MANY] will be displayed. If the parameter value is too short [?NOT ENOUGH] will be displayed.

2-4 Command chart The following is a chart for the commands commonly used in Amateur Radio communications.

Command

abbrevi

ation

default range Description Ref.

8BITCONV 8 ON ON/OFF bits, number of characters in the converse mode ABAUD AB 9600 600-15200 sets serial port communication speed AFILTER AF 0 0-$80 skips display of defined characters AUTOLF AU ON ON/OFF Adds a line-feed [LF] after [CR] AWLEN AW 8 7/8 Specifies the data bits, 7 or 8, between the host and

TNC

AXDELAY AND 0 0-120 delay time in units of 10ms before data is sent. AXD

is in addition to value set in TXD. Useful when doing packet through a voice repeater

AXHANG AXH 0 0-250 “hang” time in units of 10ms Used with repeaters

that have hang times in excess of 10 ms

BEACON B EVERY 0 EVERY/AF

TER

The transmission interval of the beacon signal in increments of 10 seconds

n(0-250)

BTEXT BT N/A 159

characters

The message text sent out as a beacon at the intervals specified in BEACON

CALBRAT CAL N/A N/A Calibrate mode. In this mode, the TNC sends the

mark and space at 50% duty. Press Q to exit this mode.

CHECK CH 30 0-250 Checks if TNC is still in the connected state. 10 sec

units

CMSG CMS OFF ON/OFF When another station connects to you, a message

can be transmitted automatically.

CMSGDISC CMSGD OFF ON/OFF When another station connects, a message is sent

and the other station is then disconnected automatically.

CONMODE CONM Convers Cconvers /

Trans

Automatically selects either Converse or Transparent mode when connection occurs. NOMODE should be OFF

CONNECT C N/A Call (VIA

Call1,call2 ,..,call8)

Request a connection (after “VIA” if using digi-peaters) eg: C KW1KW or C KW1KW VIA K6ANC

CONOK CONO ON ONN/OFF Allows acceptance of a connection request from

another station (or not).

CONSTAMP CONS OFF ON/OFF When ON, the date of the connection is displayed. CONVERSE CONV K N/A N/A Puts TNC in the converse mode.

You may simply press K to abbreviate this

command. CPACTIME CP OFF ON/OFF Validates PACTIME feature in converse mode. CR CR ON ON/OFF Adds a Carriage Return [CR] to outgoing packets. DAYSTAMP DAYS OFF ON/OFF When on, indicates the date and time when packet

is transmitted. DAYTIME DA N/A YYMMDDh

hmmss

sets the date/time of the internal clock. Info not

retained through off/on power cycles DAYUSA DAYU ON ON/OFF Determines date display format, USA or

Continental. DIGIPEAT DIG ON ON/OFF When ON, TNC can be used as a digipeater by

others. DISCONNE D N/A N/A Sends the disconnection command. DISPLAY DISP N/A (A/C/H/I/L/

Displays all the current settings of the TNC.

M/T)

DWAIT DW 30 0-250 The interval period (in 10 mS units) the TNC waits

to send a packet after the frequency is clear of

traffic.

6-2-3 3-2-1 6-2-4 3-2-7 3-2-2

4-2-7

4-2-8

4-5-2

4-5-3

4-1-3

4-4-10

4-4-4

4-4-5

6-4-2

4-4-1

4-4-3

4-4-12 6-2-1

6-2-2

4-6-6 4-6-2 11-3-3

11-3-1

11-3-2

8-1-1

4-4-2 11-2-1

4-2-4

ECHO E ON ON/OFF Activates echo back of your keystrokes on the

Including

computer screen EPATH EPATH N/A

Call1, --, Call7

Sets digipeater list to be replaced while using

UISSID EXTCLR EXTC N/A N/A Clears the Message Board FILE FI N/A N/A Displays all messages on the Message Board.

FIRMRNR FIR OFF ON/OFF In RNR frame reception, TNC waits to transmit

until next frame reception. FLOVER FL 0 0-120 Sets time when the TX/RX buffers are cleared after

the host’s buffer has filled up. A unit of 1mS. FLOW F ON ON/OFF When on, when you start keyboard activity, TNC

output to the terminal stops. FRACK FR 3 0-15 The re-try waiting period in units of 1 second. FULLDUP FU OFF ON/OFF To select Full-Duplex or Semi- Duplex mode. Not

useful in a monoband transceiver GBAUD GB 4800 4800/9600 Sets the data communication rate with the GPS

receiver GPSSEND GPSS N/A 159

characters

Use to output up to 159 characteristics to initialize

the GPS. This data cannot be memorized. GPSTEXT GPST $PNTS 6 characters Sets the data string to be sent into LTEXT from the

GPS. HBAUD HB 1200 1200/9600 Changes the data rate of communications over the

radio (1200 or 9600bps) HEALLED HEAL OFF ON/OFF Tests LEDs on TNC HID HI ON ON/OFF When ON, sends ID after packets are digipeat

through your station ID I N/A N/A Transmits ID immediately. KILL KI ON ON/OFF Deletes Messages on the message board

3-2-4

8-3-9

10-1-6 10-2-1 4-4-11

3-2-8

3-2-5

4-4-7 4-2-9

5-6-1

5-6-10

5-6-6

4-1-1

7-5-1 8-1-3

8-1-4 10-2-6

KISS KISS OFF ON/OFF TNC will enter the KISS mode after the next

boot-up. LCSTREAM LCS ON ON/OFF Allows lower case letter to be used after stream

switch command is sent LIST LI N/A N/A Displays all messages except private messages

being sent from one station to another LOCATION LOC EVERY 0 EVERY/AF

TER

Sets the time interval of GPS data transmissions

(stored in LTEXT) in 10 second increments.

n(0-250)

LOG LOG N/A N/A Displays a list of stations that connected to the

Message Board. LPATH LPA GPS Call (VIA

call1,call2

Sets the outgoing path of GPS data. (

DIGIpeater(s) used).

,--,call8)

LTEXT LT N/A 159

The GPS data buffer.

characters

LTMON LTM 0

0-250

Displays the LTEXT message as if it were received

as a beacon signal, in preset intervals. MAIL MAI OFF ON/OFF When ON, LED indicates when messages are

received MALL MA ON ON/OFF Monitor all stations/not connected stations MAXFRAME MAX 4 1-7 The maximum number of packet frames the unit

can transmit at once MBOD MB OFF ON/OFF Enables use of Message Board MCOM MCOM OFF ON/OFF TNC monitors all I frames.

MCON MC OFF ON/OFF Monitor (or not monitor) other stations while you

are connected. MINE MI N/A N/A Displays the list of messages addressed to my

callsign from the Message Board.

6-5-1

9-1-4

10-2-2

5-6-3

10-1-7

5-6-2

5-6-4

5-6-5

10-3-3

4-7-4 4-6-7

10-1-1 4-7-2

4-7-3

10-2-3

MONITOR M ON ON/OFF Monitor (or not monitor) packet communications. MRPT MR ON ON/OFF When ON, displays digipeat route in the header.

4-7-1 4-7-5

MSTAMP MS OFF ON/OFF Applies date/time to the header MYCALL MY NOCALL 6 characters

Sets your callsign in the TNC

+SSID

MYALIAS MYA N/A 6 characters

Sets the “name” of your Digipeater.

+SSID

MYMCALL MYM N/A 6 characters

Sets callsign for your Message Board

+SSID

NEWMODE NE OFF ON/OFF If ON, TNC reverts to command mode when a

connection is terminated NOMODE NO OFF ON/OFF When OFF, changes the mode to the parameter

specified in CONMODE when a connection NPATH NPATH N/A Call1, --,

Call7

NTSGRP NTSGRP N/A 3 characters

Sets the list of digipeater stations When using

UISSID relay.

Adds group-codes into the GPS data.

NTSMRK NTSMRK 0 0-14 Adds MARK# in the GPS data.

NTSMSG NTSMSG N/A 20

Add NTS message into the GPS data.

characters

OVERKILL OVE 0 0-255 The number of old messages to be deleted when a

message exceeds the memory capacity of the

Message Board. PACLEN P 128 0-255 Sets the maximum length of the data part of the

packet PACTIME PACT AFTER

EVERY/AF TER n(0-250)

The interval time until automatic packet

transmission after keyboard input stops, in 100ms

units. PARITY PAR 0 0-3 Sets the parity check system PERSIST PE 128 0-255 Sets the CSMA P-persistent probability

PPERSIST PP ON ON/OFF Selects P-Persistent CSMA RAMTEST RAMTE

N/A N/A RAM check after RAM clear. Immediate

READ R N/A n,n,…,n Use to read a specified (n) message from the

Message Board. RESET RESET N/A N/A Returns TNC to its default parameters. This

command also resets the back-up memories. RESPTIME RES 5 0-250 Sets the transmission delay time of the confirmed

packet. RESTART RESTA

N/A N/A Re-starts the TNC.

RETRY RE 10 0-15 Sets the number of packet retries before

disconnecting. ROUTE ROU ON ON/OFF Shows the forwarding route On received BBS

messages SENDPAC SE $0D 0-$7F Sets the characters that command a packet to be

sent. SLOTTIME SL 3 0-250 Sets the interval of generating random numbers in

P-persistent CSMA. SPATH SPATH N/A Call1, --,

Call7

STREAMCA STREA

ON ON/OFF When ON displays callsign of connected station on

STREAMDB STREA

OFF ON/OFF Displays the stream-switch characters

Sets the list of digipeater stations to be replaced in

UISSID

its respective stream when multi- connected

4-7-7 4-1-2

8-1-2

10-1-2

6-4-3

6-4-1

8-3-7

5-6-7

5-6-8

5-6-9

10-1-5

4-6-4

4-6-5

3-2-3 4-2-2

4-2-1 11-4-1

10-2-4

11-1-2

4-4-6

11-1-1

4-4-8

10-1-4

4-6-1

4-2-3

8-3-8

9-1-5

9-1-3

STREAMSW STR $01 0-$7F Sets character used to change STREAM

9-1-2

TOUT TOUT 30 0-250 Message Board time-out parameter TRACE TRAC OFF ON/OFF Displays the contents of all received frames.

TRANS T N/A N/A Enter the transparent mode. TRFLOW TRF OFF ON/OFF Flow-control in the transparent mode. When ON,

control comes from the host program TRIES TRI 0 0-15 Sets the number of attempts to re-send a packet that

has not been acknowledged as received. TXDELAY TX 50 0-120 Designates the time delay between PTT and the

start of data transmission. TXFLOW TXF OFF ON/OFF When OFF TNC determines flow-control while in

Transparent Mode UICHECK UIC 28 0-250 Sets the time not to relay previously received UI

frames while in UI digipeat. Unit of 1s. UIDIGI UI OFF ON/OFF,

Call1,Call2 , --,Call4

Call1 to Call4 Relays A UI Packet that does not

contain MYCALL and matches the set parameters.

The UIDIGI call will be replaced with MYCALL UIDWAIT UIDW OFF ON/OFF Can be set if PRESET or DWAIT commands

become active in UI digipeat

UIFLOOD UIF Name,

ID/NOID

N/A Determines processing of packets being digipeated.

Decrements count in sequentially repeated packets

/FIRST

UISSID UIS OFF ON/OFF Determines if a special process is required when

matching UI frames to the default UITRACE UIT N/A Name Determines the relay of UI packets and MYCALL is

not on the source list or on the relayed station list

Decrements count of sequentially repeated packets. UNPROTO U CQ Call (VIA

call1,call2

Sets the destination of packet and the DIGI-PEAT

route while communicating unconnected.

, --,call8)

USERS US 1 0-10 Number of channels open for use in multi-

connections to the TNC. WPATH WPATH N/A Call1, --,

Call7

Sets digipeater station list to use when using

UISSID relay. WRITE W N/A call Write message on the Message Board to CALL

10-1-3 4-7-6

6-3-1

6-3-2

4-4-9

4-2-6

6-3-3

8-3-1

8-3-3

8-3-2

8-3-4

8-3-6

8-3-5

4-5-1

9-1-1

8-3-10

10-2-5

XFLOW X ON ON/OFF Software flow / Hardware flow controls

3-2-6

3. Connecting to the host PC

3-1 Communications environment

Set the PC parameters as follows (9600,,8,N,1 are standard settings for most terminals and software programs.) * Bit rate 9600Bps fixed (ABAUD) * data length 8 bit / 7 bit AWLEN command * Parity None/Even/Odd Parity command * Stop bit 1 bit fixed The following parameters must meet the terminal software’s requirements. * wireless modem to the host: echo back setting Echo command * wireless modem to the host: put [LF] after [CR] AUTOLF command

3-2 Relative commands

3-2-1 ABAUD command Abbrev. AB default 9600 parameters: 600,1200,480,9600,19200 example AB 15200

Function: Sets the serial communication speed to the host. YOU MUST REBOOT by using the RESTART command or reboot when in the back-up mode. This value must match the speed of the host terminal communication port.

3-2-2 AWLEN command Abbrev. AW default 8 parameter 7/8 example AW 8

This is used to set the data length for serial communication with the host. 7 stands for 7 bites, 8 for 8 bites. Restart is required using RESTART command, or restart when the back-up is made.

3-2-3 PARITY command Abbrev. PAR default 0 Parameter 0 to 3 example PAR 0

This is used to set the parity between the host and serial communication. [0],[2] No parity [1] odd parity [2] even parity Restart is required using RESTART command, or restart when the back-up is made.

3-2-4 ECHO command Abbrev. E default ON range ON/OFF example ECHO OFF

This is used to set the echo-back of characters input from the host. ON for echo-back, OFF for none. This is compatible to terminal software’s “local echo” setting. If this is not matched properly, the characters may be displayed twice or the characters may not be seen at all.

3-2-5 FLOW command Abbrev. F default ON range ON/OFF example F ON

When ON is selected, as you start input with the keyboard, the display of received packets will be paused. When the input is complete, send ([CR] in command mode or when transmitting the packet in converse mode). It separates the TX and RX messages for easier reading of the messages on the screen. Note that during the pause, if the serial transmitting buffer to the host is filled, the received packet will be lost.

3-2-6 XFLOW command Abbrev. X default ON range ON/OFF example XFLOW OFF

This is used to select software flow control ON/OFF. ON to enable flow control. Use XOFF(Ctrl+S) to pause the display, XON <Ctrl+Q> to resume. In OFF position, the hardware flow control is ON always.

12 3-2-7 AUTOLF command Abbrev. AU default ON range ON/OFF example AU ON

When on, it puts a line-feed [LF] code after the carriage return [CR]. This is to match the parameters of the terminal software such as [CR] RX, [CR]/[CR]+[LF]. The incorrect setting may result in overwriting of the new message onto the displayed message or if excessive line feeds occur.

3-2-8 FLOVER command Abbrev. FL default 0 range 0-120 example FL10

Sets the time frame of when to clear the communication buffer to the host when the buffer between modem and host has become full. The unit value is 1 minute.

When the communication buffer from the TNC to the host has become full, the TNC will send out an RNR packet or throw away the received packets. This parameter is set to force the deletion of those packets in the buffer enabling it to accept incoming packets.

4. Communication related commands (as a wireless modem)

The following will explain communication-related commands, pertaining to the following categories:

 The basic TX/RX commands  TX related commands  RX related commands  The commands used when you are connected  The commands used when you are not connected  Control commands in converse mode  Monitor related commands

4-1 The basic TX/RX commands Check these commands if the unit does not transmit.

4-1-1 HBAUD command Abbrev HB default 1200 parameter 1200/9600 example HBAUD 9600, HB1200

This is to determine the speed of transmitted data. If 1200 is set, it enables AFSK at 1200bps. At this position

the modulated signal is output from the T1200 (29

pin). When 9600 is set, GMSK 9600 bps is enabled. T9600 (35th pin) outputs the modulated signal, but there

(35 is NO output from the T1200 (29

pin).

pin) on the gate-array but there is no output from the T9600

4-1-2 MYCALL command Abbrev,. MY default NOCALL parameter : up to 6 alphanumeric characters and SSID example MY K6ANC-15

This is to set your callsign. Usually callsigns are less than 6 characters. You may add a SSID (sub-station ID) to identify up to 16 different callsigns. To add a SSID, chose 0 to 15 preceded by a “dash” [-]. If a SSID is not added, the callsign is processed as SSID [0]. Note that the EJ-50U can transmit a signal without a callsign being entered (NO CALL). It is illegal to transmit a signal without your identification, which is a callsign. PLEASE BE SURE TO SET YOUR CALLSIGN FIRST. Also, if the same callsign is used by different stations (club-station callsign, home and mobile set-up etc) you will encounter problems. Please use a SSID to differentiate the stations and avoid problems.

4-1-3 CALIBRA command Abbrev. CAL default: none parameter: none Example: CAL

By using this command, the TNC enters the calibrate mode and outputs mark and space characters alternately. This is useful for checking the transmitter or for setting transmit deviation. Type [Q] key to exit. In the 1200 bps mode, 1200 and 2200Hz signals are output alternately. In the 9600 bps mode, the signals are not really alternated High/Low, but can be monitored by observing the eye-pattern of the modulated signals on an oscilloscope.

4-2 Transmission related commands

To avoid conflicts with other packets, these commands are used to determine how to start transmission. They are PPERSIST, PERSIST, SLOTTIME, DWAIT, SOFTDCD and TXDELAY.

Please cross-refer relative commands’ description, as they are closely related each other.

(A)PPERSIST is OFF

[Others transmit] [Others transmit] [Start transmit] DWAIT DWAIT (1) (2) DWAIT: As another station stops transmission, DWAIT starts counting. While it is counting, another station starts transmitting, it stops counting. When this occurs, you cannot transmit. (1) DWAIT: If no signal is received during the entire DWAIT period, The TNC starts to transmit.

(B)PPERSIST command is ON

[Others transmit] [Start transmit] Slot time Slot time (1) (2) (3) (4) (5) blank blank hit

It’s like a slot-machine. (1) As others stop transmitting, it generates a random number between 0 and 255. If this number is higher than the

number set in the parameter, it is considered a “blank” and does not transmit. (2) In this status, it waits until the slot time elapses, and generates a new random code again. (3) If the number is higher, it’s “blank” again. (4) Again, it’s waiting for another slot time. (5) This time the number is lower than the parameter. It’s a HIT and the radio transmits.

If the other stations start transmitting, it stops counting the slot time, and generates code when the incoming signal is gone.

PTT [Flag TX] | [Packet TX]

TXDELAY

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