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PK-232 – MBX OPERATING MANUAL

COMMAND SUMMARY

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$xC signifies data to be transmitted. Unlike the $x0 command, the $xC byte is followed by two
frame ID bytes, then the data; when the TNC transmits the frame, it notifies the host application
by echoing back FEND, the $xC byte, the two frame ID bytes, and FEND.

$xE is the polling command, similar to the HOST "GG" command existing in AEA products. Polling
makes multi-TNC KISS operation possible. If KISS polling is enabled, the TNC holds received data
until the host application sends the poll command. If the TNC is holding no data, it echoes back
FEND $xE FEND. The "x" in "$xE" must match the number in the KISSADDR command for the TNC
to respond.

If KISS checksum is enabled, a checksum byte is added to the end (before the final FEND) of all
KISS blocks flowing between the TNC and the host application.
The checksum is the exclusive-OR of all other bytes between the FEND bytes, taken before KISS
escape transpositions. A checksum is helpful when using multiple TNCs on a marginal RS-232 link.
If the PK-232 receives a KISS block with a bad checksum, it does not transmit the data.

In KISS and Raw HDLC modes, communication activity on the RS-232 link is shown by illuminating
the STA and CON LEDs as follows:

Host to TNC Communication: STA LED illuminated.
TNC to host Communication: CON LED illuminated.

HOST OFF (3 <CTRL-C>s) will force KISS OFF. Details on the use of KISS TNC protocol are con-
tained in Timewave's Technical Manual for the PK-232.

KISSA

ddr "n"

Default: 0

Mode: Packet

Host: KA

Parameters:

"n" -

Is a number from 0-15 signifying the KISS address of the TNC's radio port.

Radio port addressing is available in the high nibble of the KISS command byte. The PK-232 com-
pares the high nibble of the KISS command byte to KISSADDR only if extended KISS mode is en-
abled. If the command does not match KISSADDR, the TNC takes no action. Exception: the exit-
KISS command $FF works no matter what the value of KISSADDR or the status of extended KISS
mode.

LA

stmsg "n"

Immediate Command

Mode: Packet MailDrop

Host: LA

Parameters:

"n" -

0 to 999 specifies the message number of the last MailDrop message.

The number 0-999 is the number of the last message sent by a remote user or the SYSOP to the
MailDrop. This command is handy for checking the last message sent to your MailDrop system.
The LASTMSG command also allows the MailDrop message counter to be set to any value, or sim-
ply reset by setting LASTMSG 0.

LE

ftrite ON|OFF

Default: ON

Mode: FAX

Host: LR

Parameters:

ON -

The FAX signal is scanned from left to right.

OFF - The FAX signal is scanned from right to left.

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Содержание PK-232MBX

Страница 1: ...PK 232 MBX Operating Manual MODEL PK 232MBX DATA CONTROLLER Timewave Technology Inc...

Страница 2: ...io or TV reception which can be determined by turning the PK 232 on and off the user is encouraged to try and correct the interference using one or more of the follow ing measures o Re orient the ante...

Страница 3: ...n You may al so try running your PK 232 in another station if possible Timewave provides Technical Support for its line of amateur radio equipment by way of your per sonal computer and modem on the in...

Страница 4: ...If you designate billing to VISA or MASTERCARD or American Express or 3 you prepay the service charges with a personal check or 4 you specify some other method of return Typically we will service the...

Страница 5: ...are Program 2 3 18 2 4 1 Terminal Programs for IBM PCs and Compatibles 2 4 19 2 4 2 Terminal Programs for the Apple Macintosh 2 4 19 2 5 System Startup and Loop back Test 2 5 20 2 6 Detailed RS 232 Co...

Страница 6: ...d Mode Indicators 4 13 48 4 4 2 Automatic Greetings 4 13 48 4 4 3 Beacon Operation 4 13 48 4 4 4 Digipeater Details 4 14 49 4 4 4 1 Are You a Digipeater 4 14 49 4 4 5 Monitoring Other Stations 4 15 50...

Страница 7: ...4 25 60 4 8 5 Operating in Full Duplex 4 25 60 4 8 6 Identifying as a Digipeater 4 25 60 4 8 7 Digipeater Alias Callsign 4 25 60 4 8 8 Morse ID in Packet 4 25 60 4 8 9 Sharing Packet Channels With Vo...

Страница 8: ...Transmitter Adjustments 6 3 80 6 3 1 Going On The Air 6 3 80 6 4 A Typical Baudot RTTY Contact 6 3 80 6 4 1 Calling CQ 6 3 80 6 4 2 Answering a CQ 6 4 81 6 5 Baudot RTTY Operating Tips 6 4 81 6 5 1 C...

Страница 9: ...6 3 Starting AMTOR MailDrop Operation 7 9 94 7 6 4 Local Logon to the MailDrop 7 9 94 7 6 4 1 Remote Logon to your AMTOR MailDrop 7 10 95 7 6 5 Caller Prompts 7 11 96 7 6 6 Monitor MailDrop Operation...

Страница 10: ...ion 10 1 109 10 2 1 Tuning In FSK Narrow and Wide Stations 10 1 109 10 3 Using the SIAM Mode 10 2 110 10 3 1 Copying Encoded RTTY Transmissions 10 3 111 10 3 2 The CODE Command for International RTTY...

Страница 11: ...11 9 5 Caller Prompts 11 10 122 11 9 6 Monitor MailDrop Operation 11 11 123 11 9 7 SYSOP MailDrop Operation 11 11 123 11 9 8 Remote User MailDrop Commands 11 11 123 11 9 8 1 A ABORT Remote Only 11 11...

Страница 12: ...istener as well The PK 232 with your Computer or Terminal allows you to transmit and receive the follow ing modes AX 25 Packet both HF and VHF Chapter 4 Packet MailDrop Operation Chapter 5 Baudot and...

Страница 13: ...meter FM band while most of the HF activity occurs on the 20 meter band An HF receiver or transceiver must be capable of SSB operation While no specific brand of trans ceiver is required we recommend...

Страница 14: ...essor RAM 32 kilobytes ROM Up to 128 kilobytes of ROM may be used Hardware HDLC Zilog 8530 SCC 1 4 3 Input Output Connections Radio Interface Two five pin Molex connectors selectable on the front pane...

Страница 15: ...iscriminator type bargraph Indicator for HF tuning DCD LED Data Carrier Detect Status Mode Indicators Mode Group Status Group BAUDOT STBY ASCII PHASE PKT IDLE MORSE ERROR CONV SELFEC OVER FEC TFC TRAN...

Страница 16: ...should be cut in half producing two 5 ft ca bles o wire cutters and strippers or a small pocket knife a small straight blade screwdriver and a medium phillips head screwdriver 2 2 Unpacking the PK 23...

Страница 17: ...hould continue with the installation at section 2 3 keeping this in mind If you do not know what baud rate the PK 232 has been initialized to then you should re move the Lithium battery jumper JP1 fro...

Страница 18: ...A few third party pro grams are available and can be found by searching the World Wide Web 2 3 3 Computer Terminal If you have an RS 232 Computer Terminal sometimes called a Dumb Terminal Smart Ter mi...

Страница 19: ...3 0 TM and Hyperterminal included with Windows 95 98 Follow the installation directions that come with the Terminal program you wish to use Once installed on the computer you should start the program...

Страница 20: ...ored wires and the shield wire 5 Strip about inch of insulation from the GREEN and WHITE wires Short the GREEN and WHITE wires together by twisting gently 6 Plug this Radio Cable into the 5 pin RADIO...

Страница 21: ...it to YOUR OWN CALLSIGN following this procedure If you are using a Computer Terminal or a non AEA terminal program the following will set your packet callsign to AAA Enter MYCALL by typing MY AAA En...

Страница 22: ...for HF operation If you are using a Computer Terminal or a non Timewave terminal program the follow ing will select a PK 232 HBAUD of 300 Enter HB 300 Enter Your monitor should respond with HBaud was...

Страница 23: ...rates the necessary RS 232 C interface circuitry The IBM PC and Apple II series of computers are good examples of this Computers that do not have a serial port or do not permit use of a suitable adapt...

Страница 24: ...d or common pin must be connected to the PK 232 s serial port connector pin 7 o The pin on which the computer SENDS data must be connected to the PK 232 s con nector pin 2 o The pin on which the compu...

Страница 25: ...e or accessory plug connector s required by your radio o soldering iron and solder if the radio connectors require it o wire cutters and strippers and or a small pocket knife 3 2 Receive Only Radio Co...

Страница 26: ...most HF radios however the mic is hot and should be unplugged during data operation 3 3 2 Connections for Specific Transceiver Models APPENDIX E of this manual contains information and diagrams for c...

Страница 27: ...repare the bare end of one of the radio cables by removing an appropriate amount of the jacket for the connector you will be attaching Usually this is 1 2 to 3 4 inch 3 Carefully remove the foil shiel...

Страница 28: ...tive PTT The PK 232 comes from the factory set for Positive PTT since most transceivers use this method of keying This will be discussed in more detail in the Adjustment sections below If you are conn...

Страница 29: ...ble as shown above 3 Locate the connector for the CW keying input to your transceiver These are often supplied in your transceiver s accessory kit 4 Wire the transceiver connector as per the instructi...

Страница 30: ...dio signals can be used Most station Monitor Scopes also have this feature o Connect the oscilloscope to Pins 3 mark and 5 space on rear panel connector J7 o Connect the oscilloscope ground return to...

Страница 31: ...ies before making any connections Connect the Radio Cable s you constructed in section 3 3 5 between a Radio port on the PK 232 and your transceiver s IMPORTANT NOTE MAKE SURE THAT THE RADIO CABLES EX...

Страница 32: ...is heard 8 With the PK 232 keying the transmitter and sending the higher of the two tones ad just the transmit audio level as follows o Listen to the monitor receiver turn the PK 232 s rear panel AFS...

Страница 33: ...ility i e an audio output that lets you listen to the audio signals entering the microphone or phone patch jacks turn that monitor circuit on 5 Set the radio s MODE selector to LSB lower sideband 6 Se...

Страница 34: ...0 mA set the AFSK Output Level control and your microphone gain control so that the plate collector current indicates approximately 75 mA If you have not connected and calibrated an FM transceiver to...

Страница 35: ...ycle is much less than 100 and full power operation is generally acceptable 15 With your radio in receive mode tune the receiver to a clear unoccupied frequency 16 Set the receiver s audio volume cont...

Страница 36: ...and power is removed before performing one of the following I If you constructed a single Radio cable in Chapter 3 you should have one unused radio cable available for the following 1 Get the unused R...

Страница 37: ...front panel should also be lit If you used the Battery Jumper to form the Loopback connection then you must type an asterisk character before you will see the sign on message 4 After you have seen the...

Страница 38: ...ket Connect My name is name then press the Enter key Shortly after you press the Enter key you should see the message you typed ap pear again on your screen If you had connected to another Packet stat...

Страница 39: ...of the PK 232 immediately behind the RADIO 1 RADIO 2 switch 4 3 VHF UHF Packet Operation We will first listen and watch some of the VHF or UHF Packet activity in your Local Area before going on the ai...

Страница 40: ...the Squelch control on your transceiver is set high enough to silence the speaker If your Squelch is functioning then you must either rotate the PK 232 s front panel THRESHOLD control Counter Clockwis...

Страница 41: ...e we see that WA7GCI is sending to N7ALW by the order of the callsigns This packet acknowledges the Connect request as shown by the UA which stands for Un numbered Acknowledge One benefit of Packet Ra...

Страница 42: ...erate in much the same way The packet below was sent by the network switch SEA to N7ML SEA N7ML SEA N7HWD 8 Connected to SEA N7HWD 7 The packet above from SEA contains the data SEA N7HWD 8 Connected t...

Страница 43: ...m others 4 3 3 2 Mailbox Message Systems Although Standard TNCs allow incoming messages to be saved there is no way for the owner to leave a message for someone who will connect at a future time The a...

Страница 44: ...d a message simply enter S callsign where callsign is the call of the station you are sending the message to When you are finished listing reading and sending messages you will want to send the Bye co...

Страница 45: ...what other nodes your local station can reach simply type the com mand NODES after you connect This will display something like the following SEA N7HWD 8 Nodes BALDY WB6VAC 8 BOI W7SC BOISE N7FYZ 8 C...

Страница 46: ...ith the most recently heard station at the top of the list As in the Monitored packets the asterisks indicate that the station was heard directly by the PK 232 The callsigns without an asterisk were r...

Страница 47: ...for Connecting Remember that this proce dure is slightly different for AEA PAKRATT programs than it is for terminals or termi nal programs o The HBAUD parameter is set to 1200 for VHF UHF Operation o...

Страница 48: ...ny station that connects to you This can be used to tell others that you are out of the shack or for any other mes sage you would like to send To enable the CTEXT message set your Connect Text message...

Страница 49: ...s station but you can still contact WX3CCC by going around the mountain through WX4DDD and WX5EEE as shown xxxx WX1AAA _________ __________ WX3CCC WX4DDD WX5EEE This time type the connect command like...

Страница 50: ...nd sequence numbers for monitored frames are shown Understanding all types of packet frames is not important to operate Packet Packet oper ators should however understand that there are many types of...

Страница 51: ...n conjunction with MONITOR and MCON commands 4 4 5 4 The MFILTER Command Some terminals and computer programs are sensitive to certain characters that may ap pear in monitored packets You will know th...

Страница 52: ...ket is sent cancel lines or cancel packets if necessary 4 4 7 1 Carriage Returns and Linefeeds in Packets Most people use Packet Radio for sending and receiving messages or conversing with other Amate...

Страница 53: ...ber of built in timers used to control the Packet protocol and trans mit timing The default values have been set at the factory to provide reasonable perform ance but the values may not be optimum for...

Страница 54: ...are two modes of packet transmissions Connected mode and Unconnected mode Most of the time when you use Packet you will be conversing with another Packet station in Connected mode Still the Unconnecte...

Страница 55: ...every Packet station could hear every other station there would be very few collisions due to stations transmitting at the same time Since Packet operates over the radio there are usually many station...

Страница 56: ...tion If you are using an AEA PAKRATT program this is described in the program manual If you are using a terminal the rest of this section will describe how to set up the PK 232 for multiple connection...

Страница 57: ...ket is much trickier than operating on VHF In this section we will assume you have as completed section 4 2 of this chapter and at least read section 4 3 and the MONITORING sections of 4 4 If at all p...

Страница 58: ...t uses 200 Hz Frequency Shift Keying to send data 2110 2310 Hz tuning accuracy is very important Being off frequency by only 20 Hz makes a noticeable differ ence in the PK 232 s ability to copy Packet...

Страница 59: ...re are two ways you can go about talking to another station o First you can look at the packets you have just MONITORED or in your MHEARD list and choose one of them to connect to o You can also Call...

Страница 60: ...command 8BITCONV ON is all that is needed 4 8 3 The ALTMODEM Command The PK 232 has the ability to connect an optional 2400 bits sec DPSK modem that can be factory installed This command is ONLY used...

Страница 61: ...following commands operate in Packet but are seldom needed They are listed for reference and described in the Command Summary Afilter BBsmsgs ONPerm CPactime Dcdconn Flow HEAderln MDMon MRpt MXmit 4...

Страница 62: ...HBAUD is set to 300 Once these settings have been made to enable the Packet Lite protocol extensions turn the PK 232 command LITE ON You must not be connected to any other stations or you will not be...

Страница 63: ...This leaves room for other extensions to AX 25 in the future The short address bytes are the right justified bytes of the address field that WA1ABC proposes to use in subsequent Packet Lite frames wit...

Страница 64: ...again identify using both long and short addresses Timewave firmware supporting Packet Lite also contains code that permits monitoring of Packet Lite and extended AX 25 frames Packet Lite Shortened Ad...

Страница 65: ...ames have been acknowledged The slave station sends nothing not even I frames until it re ceives a polling frame from the master The Slave station may only send an I frame to the Master after a poll f...

Страница 66: ...ING MANUAL PACKET RADIO 4 91 4 31 66 To return to normal A X 25 packet operation turn User BIT 18 OFF Also be sure to disable the FRICK timer by setting FRICK to 0 when you are through operating in Me...

Страница 67: ...displays the message No free memory 5 1 2 System Commands MailDrop operation is completely under your SYSOP control from your local terminal or computer keyboard Only you can start and stop MailDrop s...

Страница 68: ...nitor a station s activity on your MailDrop show ing you both sides of the QSO Packet headers are not shown while a caller is connected to your MailDrop When a caller is connected to the MailDrop MCON...

Страница 69: ...Send a message V VERSION Sends the PK 232MBX sign on message HELP Help for the MailDrop commands 5 4 1 A ABORT Remote only The A command aborts the Listing or Reading of messages by a calling station...

Страница 70: ...The command E n F sets the message status to enable Reverse Forwarding of a mes sage number To cancel forwarding set the status to either Y or N Please read the section on Reverse Forwarding below if...

Страница 71: ...to the remote user not messages to ALL or QST 5 4 8 R n READ n Mine The R n command displays the header and text of message number n Messages are read by number not call sign As SYSOP you can read all...

Страница 72: ...w that a message has been left for you When you log on to your MailDrop with the MDCHECK command the STA LED will stop blinking 5 4 9 1 Sending Other Types of Messages with SEND Each message in the PK...

Страница 73: ...h the and the H cause this same file to be sent to the remote user 5 5 Sample MailDrop Session The Remote User s Point of View Let s see what the MailDrop looks like to a calling station Let s assume...

Страница 74: ...oing I need a ride 73 AEA PK 232M 16508 free A B H J K L R S V MailDrop s prompt 5 5 4 KILL Messages You ve read the message addressed to you and wish to KILL it Again you see the Mail Drop s prompt A...

Страница 75: ...e B for Bye to LOG OFF the MailDrop B The Bye command The MailDrop issues an immediate disconnect command to your PK 232 and the connec tion is over DISCONNECTED PK 232 s status line 5 6 Sample MailDr...

Страница 76: ...described in the Com mand summary 5 7 Forwarding and Reverse Forwarding with the PK 232 MailDrop Forwarding allows your large community Bulletin Board System BBS may automatically connect to your Mail...

Страница 77: ...the message you want forwarded Use the field to set the destination BBS where the addressee will pick up his mail For example if you want to send a message to N6UND who you know uses the BBS N6IIU en...

Страница 78: ...rate Baudot and ASCII RTTY Before you can operate Baudot or ASCII RTTY you must first know where the activity is Most RTTY operation occurs on the 20 meter amateur between 14 08 and 14 10 MHz RTTY act...

Страница 79: ...ot or ASCII activity and listen for RTTY stations o When you find a station slowly vary VFO tuning knob on your receiver and look for a display on the PK 232 tuning indicator like the one shown below...

Страница 80: ...ay to place the PK 232 into RTTY transmit mode If you are using a terminal or terminal program the following will place your PK 232 and transceiver into the transmit mode o Type X for XMIT and then pr...

Страница 81: ...DE YOURCAL YOURCAL YOURCAL KZ7G KZ7G KZ7G DE YOURCAL YOURCAL YOURCAL KZ7G KZ7G KZ7G DE YOURCAL YOURCAL YOURCAL CTRL D If the other station can t copy these four lines of text the chances are he won t...

Страница 82: ...all the supported speeds 6 5 2 Entering Your Auto AnswerBack Baudot RTTY allows you to request the identity of the station you are conversing with by sending your PK 232 the CTRL E character This caus...

Страница 83: ...the wrong sideband you can correct your transmit signal sense with the TXREV command See the Command summary for more in formation on these commands 6 5 8 Unshift On Space USOS The Unshift On Space U...

Страница 84: ...ome what higher For these reasons ASCII is not used widely on the HF amateur bands How ever some commercial and military HF stations do use ASCII 6 6 1 Starting ASCII Operation First you must enter th...

Страница 85: ...s the Time if the DAYTIME clock has been set 6 6 3 Changing ASCII Baud Rates Assume you ve been receiving at 110 bauds and wish to increase the baud rate in steps From the Command mode type AB U follo...

Страница 86: ...RRL to send bulle tins to amateurs 7 2 Where to Operate AMTOR Before you can operate AMTOR you must first know where the activity is Most AMTOR op eration occurs on the 20 meter amateur between 14 065...

Страница 87: ...ATT program follow the instructions in the program manual for entering the command MYIDENT If you are using a terminal then enter the following cmd MYIDENT N7ML The PK 232 will tell you MYIdent now VT...

Страница 88: ...RQ or the steady data of FEC stations NOTE When in the AMTOR Standby mode as you are now you will not be able to print the chirping ARQ signals To print these stations you must be in the AMTOR Listen...

Страница 89: ...CQ call you must do so in the FEC AMTOR mode This is required since an ARQ AMTOR transmission requires another station to Link up with If you are using an AEA PAKRATT program see the program manual t...

Страница 90: ...ation ISS to the Information Receiving Station IRS and switches the distant system from being the IRS to being the ISS When your distant partner sees the he knows he can begin typing comments or traff...

Страница 91: ...is synchronized with the distant station the LEDs change to STATUS SEND lit TFC and IDLE lit alternately by data flow MODE ARQ lit Verify the link by typing a few Enter s watch the display Your traffi...

Страница 92: ...RL E Sends a Who Are You request to the other station CTRL F Sends call sign in Morse and shuts off transmitter CTRL N Sends FIGURES character CTRL O Sends LETTERS character CTRL T Sends the TIME if t...

Страница 93: ...ct sideband otherwise other stations will not be able to copy you If you find a station operating on the wrong sideband you can reverse your receive sense with the RXREV command Similarly if someone t...

Страница 94: ...e have designed the AMTOR MailDrop so that it can be enabled or dis abled at any time during an ARQ link simply by turning the command TMAIL TOR MAIL ON and OFF This allows you the SYSOP to make your...

Страница 95: ...matic Your MailDrop will send STAND BY and then the WRU request to the remote user Al ways be sure you have entered a proper Auto Answerback AAB message consisting of QRA YOURCALL YOUR_MYSELCAL YOUR_M...

Страница 96: ...s logged onto your MailDrop the following commands are available to the distant station A B H J K L R S V The remote user may end a command with either or a carriage return A brief description of each...

Страница 97: ...cels the SEND command and gives the GA command prompt instead If the reply is Y the message can then be sent as shown below In the SEND command the words AT FROM and BID must be used in place of the a...

Страница 98: ...tion try some of the fol lowing operating tips before calling AEA or deciding that your radio equipment needs modifications o Try to work the distant station on Mode B FEC to establish that the other...

Страница 99: ...he NAVTEX transmitter Trans mitter Identification letters can be any of the characters A through Z This limits the number of NAVTEX stations in an area to 26 The NAVSTN Command can be used to selectiv...

Страница 100: ...you are using an AEA PAKRATT program follow the instructions in the program manual to enter the Morse mode If you are using a terminal simply type MORSE or MO from the Command Mode followed by the Ent...

Страница 101: ...program the following will place your PK 232 and transceiver into the transmit mode o Type X for XMIT and then press the Enter key to key your transmitter and auto matically enter the Converse mode As...

Страница 102: ...Switches system to transmit mode and forces immediate entry into Converse mode K Loads the Transmit type ahead buffer MO Unlocks the Morse receive speed Function Key characters embedded in transmitted...

Страница 103: ...oard with keys that have no direct representation in standard Morse These special reserved keys are listed below Morse Keystroke Abbreviation Meaning or SK End of QSO AS Wait AR End of message KN Go o...

Страница 104: ...is a list of frequencies that seem to broadcast on a regular schedule A few of these stations transmit 24 hours day We suggest you try the weather FAX frequencies listed below while you are becoming...

Страница 105: ...raphs We recommend starting start with one of the listed weather frequencies or frequencies from Popular Communications in Table 1 when first receiving facsimile Upon tuning into a WEFAX signal you wi...

Страница 106: ...printer may not print If you do not want to wait for the beginning of a new picture you may type Lock This forces a synchronization lock and starts the printer printing regardless of what kind of sig...

Страница 107: ...e you expect white and leaving white where you expect black In this case you may issue the command FAXNEG ON The PK 232 will respond with FAXNeg now ON What was before printing black will now be white...

Страница 108: ...de the PK 232 has probably drifted off frequency If you have a frequency counter with a high impedance input you may do the following Step 1 Open the PK 232 by removing the six screws that hold the gr...

Страница 109: ...ne it in without time consuming trial and error 10 2 SIAM Operation When preparing to tune in a digital signal the only decision the operator needs to make be fore entering the Signal analysis mode is...

Страница 110: ...he THRESHOLD control so the DCD LED goes out when no station is being received you will prevent garbage characters gen erated by noise from printing on your screen 10 3 Starting the SIAM Mode After co...

Страница 111: ...at make receiving them almost impossible There are a few stations however that use a relatively simple bit inversion technique to make them hard to copy For these stations the PK 232 has included the...

Страница 112: ...ions idle MOST of the time so you may have to leave the PK 232 monitoring for an hour or two before any data is re ceived TDM signals allow multiple data streams to share the same RF channel The PK 23...

Страница 113: ...ge ACK or non ac knowledge NAK The NAK is sent by the receiving station when the CRC indicates an error in the data block Like packet Pactor is mark space polarity independent The Pactor protocol alte...

Страница 114: ...Standby mode both Standby LEDs lit and the CMD CoMmanD LED will be lit There is no front panel LED for the Pactor mode 11 4 HF Receiver Settings Set your HF receiver or transceiver to Lower Sideband...

Страница 115: ...our speaker is too high for the PK 232 to copy packets Slowly tune the VFO and make the frequency lower Frequency Too High o Adjust the PK 232 front panel THRESHOLD control so that the DCD LED lights...

Страница 116: ...erent from the Pactor Listen mode In Pactor standby your PK 232 is ready to receive Pactor connects but you will not be able to monitor other Pactor sta tions o Wait a bit to see if you get a response...

Страница 117: ...istant station and both stations are ready to end the Pactor ARQ contact you can end the contact and terminate the link in several different ways o Type CTRL D to stop sending after the transmit buffe...

Страница 118: ...ATUS TFC SEND and CON MODE ARQ Verify the link by typing Enter a few times watch the display Your traffic will now begin to flow as you type characters If EAS Echo As Sent is set ON your typed charact...

Страница 119: ...in Morse CTRL T Sends the TIME if the DAYTIME clock has been set CTRL Z Changes your PK 232 from send ISS to receive IRS 11 7 1 ARQ Break In ACHG Command In the linked or connected mode ARQ when you...

Страница 120: ...u this by showing ERROR or REQUEST nearly continu ously 11 7 6 Sending only Complete Words WORDOUT Some Pactor users like to have their words sent out only when they are complete This al lows the word...

Страница 121: ...rt of the handshake you do not generate the request for repeat Your PK 232 will check for the correct CRC error check and will not display messages with errors Missing blocks will be designated with f...

Страница 122: ...te stations to access your Mail Drop in ARQ Pactor Turn TMAIL OFF to have normal ARQ QSOO with other stations in the Pactor mode 11 9 4 Local Logon to the MailDrop To locally access your MailDrop use...

Страница 123: ...ction found in chapter 5 11 9 8 1 A ABORT Remote only The A command aborts the listing or reading of messages by the remote calling sta tion as described in chapter 5 The difference in Pactor is that...

Страница 124: ...ge Z CTRL Z or EX to End MailDrop Send prompt I haven t heard from you and wondered if Message text you are going to the Hamfest next month Message text Hope to see you there 73 Message text ex Enter...

Страница 125: ...mpen sate for this 11 11 1 Suggested Pactor operating Settings If you have trouble synchronizing with another Pactor ARQ station try some of the follow ing operating tips before calling Timewave or de...

Страница 126: ...er UPPER or lower case when entering commands o End the command with a carriage return CR or the Enter key o Correct any typing mistakes before typing the final Enter A 1 2 Command Responses Whenever...

Страница 127: ...r the command name as well as its default value Three different types of parameters are used Boolean Numeric and Text or String A 3 1 Boolean Parameters Boolean parameters use one value out of a choic...

Страница 128: ...s of related parameters A 4 Controller Messages From time to time the PK 232 will generate messages informing you of its status Error messages will also be generated if the PK 232 did not understand a...

Страница 129: ...re in the PK 232 If this message appears call AEA s Technical Support department A 4 2 General Error Messages An error message is displayed if the PK 232 does not understand what you typed or needs mo...

Страница 130: ...n will change on next RESTART This message means you have changed the terminal baud rate TBAUD word length AW LEN or the PARITY When you type the RESTART command the new baud rate will take affect nee...

Страница 131: ...r in either Con verse or Transparent Mode You cannot re enter Converse or Transparent until some of the packets have been sent WARNING Beacon too often This Warning message appears if you have set the...

Страница 132: ...onnect request was rejected by a busy signal from another station FRMR sent xx xx xx or FRMR rcvd xx xx xx Your PK 232 is connected but a protocol error has occurred Your PK 232 is trying to re synchr...

Страница 133: ...PK 232 MBX OPERATING MANUAL COMMAND SUMMARY 4 91 A 8 133 Not your message A remote user will get this when trying to read a message number that is addressed to another station...

Страница 134: ...settings for RBAUD and RXREV but typing OK after SIGNAL selects BAUDOT not 5BIT Do not change modes directly between BAUDOT 5BIT and 6BIT Go through some other mode first such as Packet These commands...

Страница 135: ...mediate Command Mode AMTOR Host AG ACHG is an immediate command used in AMTOR by the receiving station to interrupt the sending station s transmissions As the receiving station you usually rely on the...

Страница 136: ...7 3 84 4 03 63 Default setting 6 42 8 07 31 Very busy channel 12 20 16 0F 15 Extremely busy channel 64 3F 3 Timewave products calculate the TAPR ACKTIME value based on the setting of HBAUD The TAPR DE...

Страница 137: ...ng and don t want to be bothered by watching the screen or worrying about line length You should NOT use this option when retransmitting text received from another station for example ARRL Bulletins A...

Страница 138: ...ve error free copy AFilter ON OFF Default OFF Mode ALL Host AZ Parameters ON The ASCII characters specified in the MFILTER are filtered out and never sent to the terminal or computer OFF Characters in...

Страница 139: ...er each CR If ALFRTTY is set ON when transmitting Baudot or ASCII RTTY a line feed character is added and sent automatically after each CR character you type Use this option when you are typing into t...

Страница 140: ...The PK 232 can communicate using either the CCIR 476 4 character SEL CALL or the CCIR 625 7 character SELCALL protocol Your monitor will also display any inbound FEC Mode B transmissions See the MYSEL...

Страница 141: ...n in the default time of 60 seconds you can probably assume that the other station can t hear your transmission ARQTOL n Default 3 Mode AMTOR ARQ Host AO Parameters n 1 to 5 specifying a relative tole...

Страница 142: ...pect ratio of the length to the width of a FAX image by controlling the num ber of lines the PK 232 prints out of each 6 received lines On most weather charts the default of ASPECT 2 keeps the shapes...

Страница 143: ...at Power ON or RESTART OFF Autobaud Routine active at Power ON only if battery jumper is removed When AUTOBAUD is OFF default the unit performs the autobaud function only when powering ON or after a...

Страница 144: ...lue for n if you re using a repeater that hasn t been used for packet operations before If other packet stations have been using the repeater check with them for the proper set ting AXDELAY acts toget...

Страница 145: ...s beacon timing in ten second intervals 0 Zero turns off the beacon default The BEACON command sets the conditions under which your beacon will be sent A beacon frame contains the text that you ve typ...

Страница 146: ...data portion of a beacon packet The default text is an empty string no message When and how packet beacons are sent is discussed in more detail under the BEACON command Although the beacon subject is...

Страница 147: ...ine in Command Mode the line is termi nated with a BACKSLASH character and a new prompt cmd appears When you cancel lines in Converse Mode only a BACKSLASH and a new line appear o You can cancel only...

Страница 148: ...n AMTOR CFrom all none yes no call1 call2 Default all Mode Packet Host CF Parameters call all none YES list NO list List of up to 8 call signs separated by commas CFROM determines how your PK 232 resp...

Страница 149: ...CONNECTED to N7GMF 1must be a dx record ge John CHDouble ON OFF Default OFF Mode Packet Host CD Parameters ON Received CHSWITCH characters appear twice doubled OFF Received CHSWITCH characters appear...

Страница 150: ...9 If you plan to use multiple packet connections you MUST select a CHannel SWITCHing character This character will be interpreted by the PK 232 to indicate that you want to select another logi cal pa...

Страница 151: ...g Morse Baudot AMTOR PACKET 0 International RX TX RX TX RX TX 1 US teleprinter RX TX RX TX 2 Cyrillic RX RX TX RX TX 3 Transliterated Cyrillic RX RX RX 4 Katakana RX TX 5 Transliterated Katakana RX 6...

Страница 152: ...ot and AMTOR the US teleprinter character set shown below is used Users of CODE I should be aware of the following The US teleprinter code CODE 1 makes the 1 and characters available in Baudot and AMT...

Страница 153: ...exceptions Character Code 2 English Pronunciation FIGS F 7C E FIGS G 7B SH FIGS H 7D SHCH FIGS I 60 YU 3rd Q 71 q YA If several words end in DJ OW or OGO the transmission is probably Russian There is...

Страница 154: ...characters displayed are generally in the range from AO to DF except for numerals and punctuation If you are using CODE 4 remember to set the PK 232 for AWLEN 8 PARITY 0 and 8BITCONV ON CODE 5 Transli...

Страница 155: ...rs call1 Call sign of the distant station to which you wish to be connected call2 Optional call sign s of up to eight digipeaters via which you ll be repeated to call9 reach the distant station Use th...

Страница 156: ...appears as follows cmd 10 55 23 CONNECTED to W2JUP cmd 10 55 59 DISCONNECTED W2JUP CONVerse K for short Immediate Command Mode All Host Not Supported CONVERSE is an immediate command that causes the...

Страница 157: ...as follows NOT CONNECTED TO ANY STATION CONNECTED TO TWO STATIONS cmd cs cmd cs Ch 0 IO DISCONNECTED Ch 0 IO CONNECTED to WX1AAA Ch 1 DISCONNECTED Ch 1 CONNECTED to WX1BBB Ch 2 DISCONNECTED Ch 2 DISC...

Страница 158: ...232 line will put the PK 232 into the Command mode except from Host Mode If set to 0 a break on the RS 232 line will not affect the PK 232 Bit 3 position 0008 If bit 3 is set to 0 default packet chann...

Страница 159: ...nd the high tone repre senting key up Use this setting to keep other stations from sending a packet during the Morse ID Bit 13 position 2000 If bit 13 is set to 0 default MailDrop connect status messa...

Страница 160: ...e two digit month code 01 12 dd is date 01 31 hh is the hour 00 23 mm is the minutes after the hour 00 59 ss is the optional seconds o Optionally the Dallas Semiconductor DS 1216C SmartWatch may be ad...

Страница 161: ...e specific stations to digipeat through your station type DFROM YES fol lowed by a list of calls signs Packets will be digipeated only from stations whose call signs are listed To prevent one or more...

Страница 162: ...rameters Z display the entire command parameter list DISPLAY is an immediate command When DISPLAY is typed without a parameter the PK 232 re sponds with a short list of often used parameters See also...

Страница 163: ...S lets you to choose the way data is displayed on your monitor screen or printer To display your typing exactly as you are typing the keyboard characters or sending from a disk file set EAS OFF defaul...

Страница 164: ...to avoid unexpected results from accidentally receiving this charac ter FAx Immediate Command Mode Command Host FA FAX is an immediate command that switches your PK 232 into the facsimile mode The FA...

Страница 165: ...line is canceled o The redisplay line character is typed o The logical packet channel is changed Setting FLOW ON prevents received data from interfering with your keyboard data entry When FLOW is OFF...

Страница 166: ...Acknowledge operation is as in pre vious firmware versions When UBIT 18 is ON a master slave relationship is established in Packet Radio connections This is done to reduce the possibility of simultan...

Страница 167: ...de Packet Host FU Parameters ON Full duplex mode is ENABLED OFF Full duplex mode is DISABLED When full duplex mode is OFF default the PX 232 makes use of the DCD Data Carrier Detect signal from its mo...

Страница 168: ...S printer On the other hand a combination of PRTYPE 2 FSPEED 2 GRAPHICS 0 and ASPECT 2 would work as it results in a pattern of dots 8 by 480 every 12 seconds We know the following combinations of dot...

Страница 169: ...on line HELP file Your monitor displays the following brief list Help AMtor PAcket AScii ARq Connect BAudot AList Disconne MOrse FEc MHeard DISPlay AChg CStatus CALibrat NAvtex SIgnal FAx TDm CONVerse...

Страница 170: ...32 s RS 232 link To cancel HOST mode send 3 CTRL C characters as if exiting the Transpar ent mode or type CTRL A O H O N CTRL W Sending a Break signal will not cause the PK 232 to exit from the HOST m...

Страница 171: ...ication consists of a UI frame with its data field containing your MYALIAS if any and your MYCALL and the word digipeater The ID packet is sent only if your PK 232 has digipeated any transmissions sin...

Страница 172: ...Reverse Forwarded to the station whose call is in HOMEBBS If KILONFWD is ON default the message is killed automatically to make room for other messages If KILONFWD is OFF the message s status is chan...

Страница 173: ...s shown by illuminating the STA and CON LEDs as follows Host to TNC Communication STA LED illuminated TNC to host Communication CON LED illuminated HOST OFF 3 CTRL C s will force KISS OFF Details on t...

Страница 174: ...edge of the paper If you tune in a signal too late or there is so much noise that the sync pulses are not detected you can start reception manually with the LOCK command If you issue a LOCK to the PK...

Страница 175: ...Packet MBEll ON OFF Default OFF Mode Packet Host ME Parameters ON Will send 3 BELL characters to the terminal when the callsign s of the sta tion s monitored match the MFROM and MTO lists OFF As is t...

Страница 176: ...cket traffic while connected to a distant station MCON works in similar fashion to MONITOR but affects your display only while you are connected to another station If MCON is set to a value between 1...

Страница 177: ...cket MailDrop Host Mm Parameters ON Monitor a calling station s activity on your MailDrop OFF Normal monitoring as determined by the monitoring mode commands Set MDMON to ON to monitor activity on you...

Страница 178: ...ALL NONE or YES NO call1 call2 Default ALL Mode Packet Host MF Parameters call ALL NONE or YES_list NO_list list of up to eight call signs separated by commas MFROM determines what packets are monitor...

Страница 179: ...off keying of the low tone If FSK keying of both tones is desired to prevent stations from transmitting over your Morse ID see the UBIT 12 command MMsg ON OFF Default OFF Mode Packet AMTOR MailDrop Ho...

Страница 180: ...ET ROM which sends frames that have a PID of CF and that contain Con trol characters If you want to monitor every frame including those used by NET ROM you must turn MPROTO ON MRpt ON OFF Default ON M...

Страница 181: ...EYW 1 AI2Q I 2 2 MTExt text Default See sample Mode AMTOR Packet MailDrop Host Mt Parameters text Any printable message up to a maximum of 120 characters MTEXT is the MailDrop automatic answer text si...

Страница 182: ...ket MWEIGHT does not affect the code output by the MID command MXmit ON OFF Default OFF Mode Packet Host Mx Parameters ON Monitor transmitted packets in the same manner as received packets OFF Do not...

Страница 183: ...same time Use a differ ent SSID if you have more than one packet station on the air MYIdent aaaaaaa aa Default none Mode AMTOR Host Mg Parameters aaaaaaa aa Specifies the 7 character SELCALL as descri...

Страница 184: ...ile MYPTCALL will allow any punctuation with the call If calls have not been loaded into either MYCALL or MYPTCALL the PK 232 will not allow transmis sion on Pactor An error message Need MYCALL will b...

Страница 185: ...ONE or a list of up to 13 letters representing NAVTEX transmitting stations to be Monitored or Rejected NAVSTN may be cleared with or OFF as arguments Navtex Immediate Command Mode All Host MA NAVTEX...

Страница 186: ...SCII code 00 to your computer or terminal NULf ON OFF Default OFF Mode All Host NF Parameters ON NULL characters are sent to the terminal following LF characters OFF NULL characters are not sent to th...

Страница 187: ...Len n Default 128 Mode Packet Host PL Parameters n 0 to 255 specifies the maximum length of the data portion of a packet 0 Zero is equivalent to 256 PACLEN sets the maximum number of data bytes to be...

Страница 188: ...selects a parity option from the table below PARITY sets the PK 232 s parity for RS 232 terminal according to the table below 0 no parity 2 no parity 1 odd parity 3 even parity The parity bit if prese...

Страница 189: ...that memory location o Use PK with one argument O FF to write to that memory location PK 232 RAM locations are 8000 FFFF ROM begins at 0000 This command is used primarily as a programmer s aid and is...

Страница 190: ...ent to the terminal through the serial port This command is useful for any mode where the user wants to get a printed copy of what is being received by the PK 232 It is especially desirable for those...

Страница 191: ...carriage 2 8 bit graphics data standard 8 1 2 paper printer carriage 3 8 bit graphics data wide 13 paper printer carriage As an example the default PRTYPE setting of 2 was chosen because most printers...

Страница 192: ...ed for future use Instead of using the normal 8 bit ASCII representation of a character Huffman encoding assigns each character a code that may be as few as 2 bits for the most used characters to as l...

Страница 193: ...to increase the probability of correct transmission the unproto Pactor transmission sends the message data a selected number of times The parameter x sets the number of times the data is sent Example...

Страница 194: ...llows you to insert a character default CTRL D in your typed text that will cause the PK 232 to return to receive after all the text has been transmitted REDispla n Default 12 CTRL R Mode All Host RD...

Страница 195: ...Mode Command Host RT RESTART is an immediate command that reinitializes the PK 232 while retaining the user s settings The effect of the RESTART command is the same as turning the PK 232 OFF then ON a...

Страница 196: ...e cases you may be trying to copy a station that s transmitting upside down although it is receiving your signals correctly This is especially true when listening to signals in the Short Wave bands Se...

Страница 197: ...aud rate and compensate for the doubled data bits in the analysis software Note that it might be more useful to let the TNC do the start stop bit work by using the 5BIT command rather than SAMPLE 5BIT...

Страница 198: ...Your PK 232 responds to negative going squelch voltage Normally your PK 232 uses its CSMA Carrier Sense Multiple Access circuit to decide whether or not it is clear to transmit on a packet channel If...

Страница 199: ...set terminal rates not covered by the autobaud routine such as 110 and 600 bauds Set TBAUD to specify the terminal baud rate to be activated at the next power on or RESTART A warning message reminds y...

Страница 200: ...The TDM command forces bit phasing do this when changing frequency to another TDM signal This is also useful when the PK 232 synchronizes on the wrong bit in the character stream which is likely on a...

Страница 201: ...prompt If there is no slash in the text the subject prompt is SUBJECT and the text prompt is from TMPROMPT TRACe ON OFF Default OFF Mode Packet FAX Baudot AMTOR Host TR Parameters ON Trace function i...

Страница 202: ...ated in Transparent Mode OFF Software flow control for the computer or terminal RECEIVING data is dis abled in Transparent Mode When TRFLOW is ON the type of flow control used by the computer RECEIVIN...

Страница 203: ...Mode When TXFLOW is ON the setting of XFLOW determines the type of flow control used in Transpar ent Mode by the PK 232 to control TRANSMITTED data When TXFLOW is OFF the PK 232 uses only hardware fl...

Страница 204: ...e OFF A Break signal on the RS 232 line is ignored by the PK 232 UBIT 3 OFF Multiple connect Packet channels are numbd red from 0 9 ON Multiple connect Packet channels are numbered A J UBIT 4 ON When...

Страница 205: ...always sent to the local user regard less of the setting of MDMON ON Remote user dialog and Connect status messages with the MailDrop are shown only if MDMON is ON UBIT 14 OFF In Packet the transmit b...

Страница 206: ...1 3 Sets the function controlled by UCMD I to 3 UCMD 3 Y Returns the value of UCMD 3 to its default UCMD Returns the value of the last UCMD value that was accessed Listed below are the UCMD functions...

Страница 207: ...nnections on 2 or more logical channels And so on through USERS 10 USOs ON OFF Default OFF Mode Baudot RTTY Host US Parameters ON Letters LTRS case IS forced after receiving a space character OFF Lett...

Страница 208: ...ably a NET ROM or TCP IP frame MFROM MTO The frame was blocked by the MFROM or MTO command MBX The call sign of the sending station does not match the call sign setting in the MBX command MBX Sequence...

Страница 209: ...er and returns to receive The WRU function is defaulted ON in AMTOR as per the CCIR recommendation To allow for spe cial applications where it may be helpful to disable the WRU function in AMTOR UBIT...

Страница 210: ...bound data and Morse characters from the PK 232 The XMIT Command can only be used from the Command Mode XMIT switches your PK 232 to either Converse Mode or Transparent Mode depending on the set ting...

Страница 211: ...L Q Mode All Host XN Parameters n 0 to 7F 0 to 127 decimal specifies an ASCII character code XON selects the PK 232 Start character that is sent to the computer or terminal to restart input from that...

Страница 212: ...PK 232 MXB OPERATING MANUAL SCHEMATICS B 1 212...

Страница 213: ...PK 232 MXB OPERATING MANUAL SCHEMATICS B 2 213...

Страница 214: ...PK 232MBX OPERATING MANUAL PARTS PICTORAL 4 91 C 1 214 APPENDIX C PARTS PICTORIAL DISPLAY BOARD...

Страница 215: ...k R6 R10 R133 R186 R147 R13 R18 W 5 330 R160 W 5 3 3 k R135 W 5 360 REF DESIG DESCRIPTION R31 W 5 3 9 k R35 W 5 39 k R171 W 5 430 R125 W 5 470 R1 R2 R25 R29 R37 R141 R142 R149 R161 R144 R145 R169 R17...

Страница 216: ...SA42 Q3 NPN MPS6521 Q5 NPN MPS6560 Q1 Q2 PFET VN10LM Q4 Q9 Q12 PNP 2N3906 U21 7805 U41 LM317L U13 NE556N U28 U10 XR082CP U23 U26 U30 U32 U34 MC34074P U40 XR2206 U36 LM3914 U15 U39 74LS04 U18 U37 U38 7...

Страница 217: ...connected to the microphone jack on pin 8 In this case pin 8 is unused We suggest you make the connection as diagrammed even if your radio does not have receive audio available at pin 8 so that if you...

Страница 218: ...TR 33 7 TR 4 8 8 TR 4C 8 8 TR 4CW 8 TR 6 8 8 TR 7 7 UV 3 7 ICOM Figure Note IC 02 SERIES 5 2 IC 03 SERIES 5 2 IC 04 SERIES 5 2 IC 12 5 2 IC 120 12 3 IC 1201 12 3 IC 1271 SERIES 12 3 IC 1275 SERIES 12...

Страница 219: ...735 12 3 IC 735 16 4 IC 737 12 3 IC 737 16 IC 740 12 3 IC 740 13 IC 745 12 3 IC 745 13 IC 751 12 3 IC 751 13 IC 761 12 3 IC 761 17 4 IC 765 12 3 IC 765 17 4 IC 781 12 3 IC 781 17 4 IC 901 12 3 IC 970...

Страница 220: ...TS 490 11 TS 50 39 TS 50 53 7 TS 520 11 TS 530 11 TS 60 39 TS 60 53 7 TS 670 3 TS 680 3 TS 680 35 TS 690 3 TS 690 35 TS 700 11 TS 701 3 TS 711 3 TS 711 34 TS 780 3 TS 790 3 TS 790 35 TS 811 3 TS 811...

Страница 221: ...26 FT 2700 27 FT 290 MK I 26 FT 290 MK II 18 FT 290 MK II 27 FT 2F 22 FT 311RM 27 FT 33 5 2 FT 41 5 2 FT 411 5 2 FT 415 5 2 FT 416 5 2 FT 470 5 2 FT 4700 27 FT 480 18 FT 5100 18 FT 5100 48 FT 5200 27...

Страница 222: ...PK 232 MBX OPERATING MANUAL SPECIFIC RADIO CONNECTIONS 96 1 E 6 222...

Страница 223: ...PK 232 MBX OPERATING MANUAL SPECIFIC RADIO CONNECTIONS 96 1 E 7 223...

Страница 224: ...PK 232 MBX OPERATING MANUAL SPECIFIC RADIO CONNECTIONS 96 1 E 8 224...

Страница 225: ...PK 232 MBX OPERATING MANUAL SPECIFIC RADIO CONNECTIONS 96 1 E 9 225...

Страница 226: ...PK 232 MBX OPERATING MANUAL SPECIFIC RADIO CONNECTIONS 96 1 E 10 226...

Страница 227: ...3 Sets bit jitter tolerance in A RQ AMTOR AScii Immediate Command Starts the ASCII RTTY mode ASPect 2 576 Sets the received aspect ratio in FAX AUdelay 2 20 msec Sets delay before audio is applied aft...

Страница 228: ...quest to distant station Display Immediate Command Shows the PK 232 parameters and classes DWait 16 Sets the delay for digipeated packets EAS OFF Echoes characters as sent non packet modes Echo ON Ech...

Страница 229: ...a Morse ID to be sent in packet MMsg OFF Enables the MailDrop sign on message Monitor 4 UA DM C D I UI Sets the packet Monitor mode level 0 6 MOrse Immediate Command Starts the Morse mode unlock spee...

Страница 230: ...lection Rcve Immediate Command Selects the receive mode Morse RTTY AMTOR RECeive 04 CTRL D Selects the Receive character used in text REDispla 12 CTRL R Re displays current terminal input buffer RELin...

Страница 231: ...address USers 1 Sets allowed number of packet multi connects USOs OFF Sets RTTY unshift on space VHF ON Selects VHF Packet wide 1000 Hz shift WHYnot OFF Displays reason why packet not displayed WIdes...

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