Heathkit HK 232 User Manual
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Page 90
Heathkit. Page (>29
PRINTING OTHER SERVICES
Most of the weather services, at least in the United States, use a facsimile San
speed of 2-lines per second. This corresponds to an ESPEED of 2 (default). Facsimile
photographic; often use 1- line. per second, which is an FSPEED of 1. Some foreign
services use speeds of Mines per second, which is an PSPEED of 4. Your Controller
also supports speeds of 15 and 3-lines per second. Refer to the "Controller
Commands section, beginning on Page 6L 1, for more information about the FSPEED
command.
When stations use different horizontal scan speeds, the number of lines per vertical
inch can also vary. lt' you do not change the number of lines that are printed by the
printer, the pictures may appear squashed or elongated. The ASPECT command
resolves this problem by directing the Controller to print from 1 to 6 line-s for every
six lines that are received. The default setting of ASPECT 2 causes 2 lines out of
every 6, or 1 out of every 3 horizontal lines to be printed. Thia is the most mmmon
getting you will use for WEFAX, but other services may require you to use other
values to print pictures withoutaspect ratio distortions.
if your terminal program allows you to save non~ASCll files to disk for later
tranurnission or printing, you can use the PRFAX command to route the facsimile data
to the Es-232 port instead of to the parallel printer, When PRFAX is OFF, the
Controller sends the Epson escape codes to the RS-232 port instead of the parallel
pn'nter. The Controller will respond with:
PRFAX va- ON
PRFAX now OFF
When you route a facsimile signal to the R532 port, be sure you set AWIEN to 8,
SBITCONV to ON, PARity to 0, and ACRDlSl to 0 before you turn on the file
capture of your terminal program. if you enter the Transparent Mode before you turn
the tile capture of your terminal program on, you will only need to set AWLEN to 8.
if you use the Transparent Mode, make sure TRFLOW and TXFLOW are both OFF,
Hardware flow control is necessary when you transfer 8-bit filer»
Some terminal programs do not allow you to capture 8
file. Also make sure your terminal program does not add carriage returns or line feeds
to the captured file. After you save a file to disk, you should be able to print it or
reb-ansmitit.
TRANSMITTING FAX
Type an "X" from the Command Mode to place the Controller into the facsimile
transmit mode. To correctly transfer a file that was previously saved on disk, sot
AWLEN to 8, PARITY to 0, PRFAX to OFF. Also make sure the Controller is in the
Transparent Mode. TRFLOW and TXFLOW should both beOFF.
The Controller is set up for a 1000 Hz shift in transmit and receive, but commercial
facsimile is sent with an 8(1) Hz shift as described earlier. You should recalibrate
the VHF transmit tones for an 800 Hz (1300 Hz and 2100 Hz) as was described earlier
in "Facsimile Transmit Tone Recalibration."
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Page 6443
The CTEXT message can be any text string up to 120 characters. You can include
by prefixing them with the pass character (CTRL~V is the default). For example:
cmd:CTEXT Sorry, I can't talk right now.
I'll be on the alr agnln after B PM.
Joe
CFROM must be set to ALL (default) so that the connection takes place before this
message is sent to stations connecting to you.
Do You Want to Transmit?
If you want to leave your station on to monitor and perhaps record the activity on the
channel, but prevent your station from transmitting, set )CMITOK to OFF. In this case, you
would probably want to set CFROM to NONE as well.
Type "XMITOK OFF"
Type "CFROM NONE"
Digipeater Details
You may wish to connect to a packet station that is beyond your direct radio range. If a
third packet station is on the air and both you and the station you want to talk to are in
range of that third station, the third station can relay or "digipcat" your packets. To do
this you set up the "digipeater" routing when you request the connection. Your Controller
automatically includes the necessary routing information inthe transmitted packets. The
following sketch shows how digipeating can solve problems:
WXZBBB
WXIAAA -/ L wxsccc
Assume that you are station WXlAAA and you want to have a packet QSO with
WBCCC, but there is a mountain between you and WX3CCC. You are out of simplex
range of each other. You know, however, that there is a packet station located on the ridge
(WXZBBB) which is in range of you and WXSCCC.
Instruct your Controller to set up a connection to WXSCCC by using WX2BBB as an
intermediate digipeater. After the "cmd: prompt, type: "CONNECT WXBCCC VIA
WXZBBE."
You can specify a routing list of up to eight intermediate stations. Consider a modification
of the above example:
WX4DDD . . . . . . WXSEEE
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The PASS Character
You may want to include a special inputcharacterin a packet. To send several lines in the
same packet, for example, you must include a
"send- packet" function except at the intended end of the packet. You can include any
character in ii packet (including all special characters) by pi'efixing tha t character with the
pass character,
lwaun't at the meefing.
What happened?
Without the PASS character, this message would go out as two packets. By prefixing the
first
More Carriage Returns and Line Feeds
If you have set the send-packet" character to
be included in the packet tor display at the other station.
If you set the send-packet character to a nonprinting character, you will probably want
that character to be treated only as a command. The ACRIACK command determines
whether the "send-packet" character is echoed L1nd included in the packet.
You can add a
station operator reports that lines are owrprinted on his display and he cannot change
it at his end, set ALFPACK to ON.
These formatting features and commands are described in full in the "Controller
Commands" section.
MULTIPLE CONNECTIONS
Multiple-connectioncapability is a very powerful addition to your Controller that can be
very useful for traffic net operation, multi-user bu l letin board and host computer systems,
path checking, and 0rd: nary roundtable" ragchews.
Multi plc connects work with "l ,ogical channels." These channels a re created or simulated
by computer logic and do not really U\l3l in the same way that ti "radio channel exists.
Multiple connects do not effect your radios performance. Use your radio equipment
normally on only one channel.
Amultipleconnectionisnot theatme asa"multiwvay"rontact (thi:1 toaturcxsnotavailable
yet it in a multiple connection, you can establish separate "point-to- puint links up to ten
different stations. In a multi-way contact, several stations are simultaneously connected
to eachother, forminga network in which each station sees all ot the data passed from any
station in the group, with full error correction in effect.
Your Controller has ten "channels" that allow you do perform mulhplt. connections. You
could, for example, attempt to connect to a station on channel 1, connect to a different
station on channel 2, and accept a connect on channel 3. The setting of the USERS
command (explained later) determines how many channels are available.
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cmd:BEACON E - A parameter was left out.
'2de
cmd:PACLEN 265 - Unacceptable numerical value.
flange
cmd:DAY - You did not set the
7clock not 351 Controller's clock.
Cmd:x - Command is invalid for the
?not while In PACKET mode in use.
cmd:c NelA - Command is invalid for the
'Pnot whlle ln MORSE mode in use.
cmd :c NGIA - Command is invalid for the
'i'not while In ASCII mode in use.
cmdzc NSIA - Command is invalid for the
(not while In BAUDOT mode in use.
CONINIAN D LIST
Commands are listed alphabetically toward the rear of this section. Each command
entry contains the following:
Command name
Command abbreviation or mnemonic
Default value
Parameters
CONINIAND NAMES
The abbreviation (mnemonic) at the beginning of the description (in larger print) is
the short form of the command that you can use instead of the full word. Next to the
abbreviation (also in larger print) is the full command name. You can type out the
entire command word, or any abbreviation that is longer than the minimum
abbreviation. You can simply type MY", for example, to enter the command
MYCALL. NOTE: DO NOT type the "quotation marks; these are shown for clarity in
identifying the letters you will type.
The abbreviation "M" is not sufficient (and will be interpreted as a different
command), but "MY', "MYC", "MYCA", "MYCAL", or "MYCALL" are all acceptable.
If a command requires parameters, the type of parameter is indicated after the
command name as well as the default value.
A letter "n", for example, means the command takes a numerical parameter value.
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Page 843
"X" Switches the system to the transmit mode.
450 Hz rateand turns off the transmitter.
turning of! the transmitter.
CLEAR STRING COMMANDS
When the Controller is in the Command Mode, you can clear the commands listed
below by typing the command word followed by a single percent sign (%), an
ampa'sand (m, "N", "NO", "NONE", or "OFF as the commands argument:
B'IEXT MHEARD DFROM
CTEXT MFROM
MEX MTO
MY ALIAS CFROM
SPECIFIC COMMANDS
The following "List of Commands" contains detailed descriptions about the meaning,
use, effects of each command, its parameters, default values, and arguments. Examples
of command usage are alsn included.
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LIST OF COMMANDS
BBITCONV ON/OFF Default: OIT
Mode: Packet
Parameters:
ON The highorder bit 15 NOT stripped in the Converse Mode.
OW The high-order bit 15 stripped in the Converse Mode,
8BITCONV ponni ts packet transmission of eight-bit data in the Converse
Mode.
If 8B1TCONV is OFF, the high-order bit (hit seven) of characters received from
the tenninal is removed before the characters. are transmitted in apacket.
The standard ASCII character set requires only seven bits. The eighth or final hit is
used as a parity bit or ignored.
NOTE: Setting bit seven in text rharartcrs transmitted over the air may cause
confusion at the other end.
If you need to transmit eight-bit data but do not want all of the features of the
Transparent Mode, set BBITCONV ON and AWLEN to 8. This may be desirable if
you are using a special non-A SCH character set.
Since commands require only the standard seven»bit ASCII character set, bit seven
is always removed in the Command Mode.
AAB text Default: H [(-232
Modes: Baudot, ASCII, and AMTOR.
Parameter:
text A':"y combination of characters and spaces up to a maximum of 17
characters.
Use the AAB command to enter an acknowledgment text in the ANSWERBAQX
section of tho.- Controller's memory. AAB sends automatic continuation in Baudot,
ASCU, and AM'] OR operation in response to another station's WRLI? command,
AAB is not related to the CTEXT and BTEXT messages that are used only in the
packctmodc. SetWRU ON to activate your amwerbgick.
Type "AAB <17-character tab" to store your answer-back in memory.
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AXD
lt' eight-bit words are sent to the Controller in the Command or Converse Modes, the
eighth bit is normally removed, lmving a standard ASCII character, regardless of the
setting of AWLEN.
All eight data bits ofeach charactermxzst be retained to send executable files or other '
special data.
NOTE: Set AWLEN to 3 and use the Transparent Mode.
You can also use the Converse Mode and set AWLEN to 8 and 8BITCONV ON You must,
however, precede the Converse Mode special characters with the PASS character in the
data you send.
AX25L2V2 ON/OFF Default: ON
Mode: Packet
Parameters:
ON The Controller uses AX.25 Level 2 Version 2.0 protocol.
OFF The. Controller uses AXES Level 2 Version 1.0 protocol.
Sonm implementations of the earlier version of AX.2S protocol Will not properly digipeal
Version 2.0 AX.25 packets. This command exists to provide compatibility with, these
other TNCs until their software has been updated.
For best results during this transition period, set AX25L2V2 OFF.
After your local area TNCs have been updated to the newer protocol version, set
AX25l2V2 ON.
AXDELAY "n" Default: 0 (00 msec.)
Mode: Packet
Parameter.
"n" 0 to 180 specifies a key-up delay for voice repeater operation in ten-millisecond
intervals.
AXDELAY specifies the period of time the Controller will wait, in addition to the
normal delay set by TXDELAY, after keying the transmitter and before data is sent.
Packet groups using a standard "voice" repeater to extend the range of the local area
network may need to use this feature.
Repeaters with slow electromechanical relays, split sites, auxiliary links, orother circuits
which delay transmission for some time after the RF Carrier is present, require some
amount of time to get RF on the air.
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'3 BEACON EVERY/AFTER "n" Dqault: EVERY 0
Mode: Packet
Parameters:
EVERY Send the beacon at regular intervals.
AFTER Send the beacon once after the specified time interval of no packet
activity.
n
u
0 to 250 specifies beacon timing in leecond intervals.
0 (zero) Turns off the beacon.
The BEACON command sets the conditions under which your packet beacon will be
transmitted.
NOTES:
1. A beacon frame contains the text that you have typed into the BTEXT
message in a packet addressed to "CO" or other UN'PROTO address.
2. A beacon frame may be sent directly, or sent via the digipeat addresses
specified by the UNPROTO command.
When the keyword EVERY is specified, a beacon packet is sent every n times 10
seconds. This mode canbeused to transmit packets for testing purposes.
When AFTER is specified, a beacon is sent after n times 10 seconds have passed
with no packet activity.
NOTE: The beacon is sent only once until further activity is detected.
You can use this mode to send announcements or test messages only when packet
stations are on the air.
NOTE: Proper choice of "n avoids cluttering a busy channel with lots of unnecessary
transmissions.
You can monitor beacon frames from other packet stations by setting MONITOR in
the range 1-6.
NOTE: If you set the BEACON timing at less than "00. a value judged by many
authoritative sources as too small for busy channels, you Will see the message:
WARNING: BEACON too alien
The warning message appears in the Command Mode each time a new command is
typed.
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BI
BK
BITINV n" Default: $00
Mode: Baudot R l i Y
Parameter:
":1" $00 to $1F, or 0 to 31, determines the bit pattern that is exculsiveORed with
every received Baudot character.
Some commercial stations use bit inversion to prevent the casual listener from reading the
content of some Baudot transmissions. Usually either 2 or 3 bits of each 5-bit Baudot
character are inverted to produce the appearance of an encrypted transmission. Try
different BlTlNV settings on an unknown signal after you have determined the baud rate
and signal class.
BITINV $00 refers to no inversion at all. This is the plain text setting.
Use BITINV UP (Bl U) to increase the value of BITJNV by l, or use BlTlNV DOWN (Bl D)
to decrease the value of BlTl NV by 1. Thi s IS especially useful when you are trying various
combinations RBAUD, RMUZV, and BITINV to decode an unknown Baudot signal.
BKONDEL ON/OFF Default: ON
Mode: All
Parameters:
ON The sequence
when a character is deleted from the input line.
OFF ghle :ACKSLASl-b character <\> is echoed when a character is
-=ei' .
BKONDEL determines how character deletion is displayed in the Command or Converse
Modes.
The
screen.
NOTE: Set BKONDEL ON if you are using a video display terminal or computer.
On a printing terminal the
result in overtyped text.
NOTE: Set BKONDEL OFF it' you have a paper~output display, or if your terminal does
not respond to the
The Controller displays a
display of the corrected input by typing the redisplay- line character that you can set with
the REDlSPLAY command.
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When FLOW is ON, type-in flow control is active. Any character typed
on your keyboard causes the output from the Controller to the terminal to
stop until any of the following conditions exist:
A packet is forced (in the Converse Mode).
A line is completed (in the Command Mode).
The packet length (See PACLEN) is exceeded.
The terminal output buffer fills up.
Canceling the current command or packet or typing the redisplay-line
character also causes output to resume. Type-in flow control is not used in
the Transparent Mode.
Setting FLOW ON prevents inbound or received data from interfering
with your keyboard data entry. lf vou (and the person you are talking to)
normally wait for a packet from the other end before starting to respond,
you can set FLOW OFF
Some packet bulletin board programs (PBBS) may work best with FLOW
set to OFF.
Some computers with software UARTs" may be unable to send and receive
data at the same time. If you are using that typeof computer, set FLOW
to ON.
FR FRACK "n" Default: 3 (3 sec.)
Mode: Packet
Parameter:
"n" 1 to 15, specifying frame acknowledgment time-out in one-
second intervals.
FRACK is the FRame ACKnowledgment time in seconds that your
Controller will wait for acknowledgment of the last-sent protocol frame
before resending or retrying" that frame.
After sending a packet requiring acknowledgment, the Controller waits
for FRACK seconds timeout before incrementing the retry counter and
sending the frame again. If the packet address includes digipeat
instructions, the time between retries is adjusted to:
Retry interval: "n " x (2 xm +1)
where m is the number of intermediate relay stations.
When a packet is retried, a random wait time is added to any other
wait times in use. This avoids lockups in which two packet stations
repeatedly send packets which collide with each other.
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MYS MYSELCAL aaaa Default: empty
Mode: AMTOR
Parameters:
aaaa specifies your SELective CALling code (SELCAL)
Use the MYSELCAL command to enter the SELCAL (selective calling) code required
in AMTOR ARQ (Mode A) and SELFEC operating modes. MYSELCAL is a unique
character string which must contain exactly four alphabetic characters and is normally
derived from your call sign. You cannot operate AMTOR unless your SELCAL is
installed The following error message reminds you to enter your SELCAL:
?noed MYSELCAL
Some of the call sign groupings now in use:
93.022 QALL SELEAL
1 by 2 w1xx wwxx
1 by 3 W1 xxx wxxx
2 by 1 AB1X AABX
2 by 2 AB1XX ABXX
2 by a KA1XXX KXXX
For "i by 2" call signs, the first letter is doubled; e.g., WlAW becomes WWAW. For
most cases this is acceptable. If you become aware, however, that a station in another
call district or zone is also active on AMTOR and may be using the same SE LCAL, you
can derive your own unique SELCAL by substituting a letter for your call district
number. Use the letter corresponding to the call district number as it appears on the
keys of a standard typewriter or Baudot RT'I'Y keyboard.
Assume that your call sign isN7ML. You discover that there is another station with the
call sign NYML. Change your SELCAL to NUML, according to the following table:
U O=P
l
1 Q 4
2 W 5
3 E 6 0
IIIIII
-<-l:fl
7
B
9
II II II
II II II
Although the convention is to form the SELCAL from the call sign, your Controller is
capable of including any AMTOR character in the SELCA L, including digits 0 through
9. In accordance with CCIR Recommendation 491, four- or five-digit numbers may be
entered; the Controller will automatically translate the numeric entry to your four-
letter alphabetic SELCAL.
NE NEWMODE ON/OFF Default: ON
Modes: All
Parameters:
ON The Controller automatically returns to the Command Mode at
disconnect.
OFF The Controller does not return to the Command Mode at disconnect.
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REL
RESET
RES
RELINK ON/OFF Default: OFF
Mode: Packet.
Parameters:
ON Causes the Controller to try to automatically reconnect to another station
after the link has timed out on retries.
OFF The Controller will not try to reestablish a failed link.
Set RELINK to OFF when you use your Controller with host computer applications, com-
puter-based message systems, and programs like WA7MBL's Version 3.12 Packet Bulletin
Board (PBES) software.
RESET Immediate Command
Mode: Command
RESET is an immediate command that resetsall parameters to the Con trolier's PROM default
settings and reinitializes the Controller.
WARNING: All parameter customizing and monitor lists are lost.
To reinitialize the Controller using the parameter values in bbRAM, turn the Controller OFF
then ON, or use the RESTART command.
RESPTIME "n" Default: 10 (1000 msec.)
Mode: Packet
Parameter:
n
n" O to 250 specifies loo-millisecond intervals.
RESPTIM'E adds a minimum delay before your Controller sends acknowledg-ment
packets. This delay may run concurrently with the default wait time setby DWAlT and
any rmdom wait in effect.
Use RESPTIME delay to increase throughput during operations such as file transfer when
the sending TNC usually sends the maximum number of full»length packets.
Occasionally, the sending TNC may nothave a packetready in time to prevent transmission
from being stopped temporarily, with the result that the acknowledgmentof earlier packets
collides with the final packet of the series.
These collisions can be avoided if the receiving TNC sets RESPTIME to 10.
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Experiment to determine the best TXDELAY value for a specific radio.
TXDELAY can also compensate for certain characteristics of the radio used by the station
which you are communicating with.
If the other stations radio has slow AGC recovery or squelch release times when it is
switching from transmit to receive, increasing your TXDELAY may reduce retries and
improve throughput by retarding the start of your data until the other receiver has
reached full sensitivity.
TXFLCW ON/OFF Default: OFF
Mode: Packet
Parameters:
ON Software flow control for the Controller can be activated in the Transpar-
ent Mode.
OFF Soitgvare flow control for the Controller is disabled in the Transparent
M C.
When TXFLOW is ON, the setting of XFLOW determines the type of flow control used
in the Transparent Mode.
When TXFLOW is OFF, the Controller uses only hardware flow control; all data sent to
the terminal remains fully transparent.
When 'I'XFLOW and XFLOW are ON, the Controller uses the Start and Stop characters
(set by XON and XOFF) to control the input from the termiml.
Unless TRFLOW is also ON, only hardware flow control is available to the computer or
terminal to control output from the Controller.
If the Controller Start and Stop characters are set to $00, hardware flow control will
alwaysbe selected regardless of the setting of TXFLOW.
TXREV ON/OFF Default: OFF
Modes: Baudot, ASCII, and AMTOR.
Parameters:
ON Transmit data polarity is reversed (mark-space reversal).
OFF Transmit data polarity is normal.
Use the TXREV Command to invert the polarity of the data sent to the Controller's AFSK
tone generator, thus reversing mark and space in the transmitted AESK and FSK signals.
Page 250
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You can remove transistors in the same manner as other components. Make sure you
install the replacement transistor with its leads in the proper holes. Then solder
the leads quickly to avoid heat damage. Cut off the excess lead lengths.
FOIL REPAIR
To repair a break in a circuit board foil, first clear the solder resist coating to expose
clean foil. Then bridge solder across the break. Use a length of bare wire to bridge
large gaps in the foil. Lay the wire across the gap and solder each end to the foil.
After the connections cool, carefully trim off any excess bare wire.
PLATED-THR OUGH HOLES
Some of the circuit board holes have foil connections on both sides. These plated-
through holes carry the circuit from one side of the circuit board to the other. When
you troubleshoot the Controller, make sure you check for circuit continuity through
these holes.
If you are not sure about a plated-through hole where a component is not installed,
install a small piece of wire in the hole. Then solder the wire to the foil on both
sides of the circuit board. To correct a problem where a component lead is installed
at the hole, simply solder the lead on both sides of the circuit board.
TROUBLESHOOTING CHART
The following chart lists the "Condition" and the Possible Causes" of some
problems you may encounter for each function of the Controller. If particular parts
are mentioned (R15, C3, etc.) as a possible cause, check these parts to make sure you
correctly wired or installed them. Also make sure the proper part is installed at
each location. It is possible, on rare occasions, for a part to be faulty.
CONDITION POSSIBLE CAUSES
No 13 VDC supply, .guss :18,
. witc 1.
. Integrated circuits U22 through U37.
, Diode D100rD11.
. Capacitor C28
U1#WM-
NoSVDC supply. .Diode D10, D11, 012. or D13.
. Capacitor C26.
. Integrated circuit U21.
.Rasistor R31 or R32.
bum-4
LED Tune bargraph does not work. 1. See "Troubleshooting the Filters."
2.00nnectorJ110rJ12.
3. Resistor R137. Ri38, or R139.
4. Integrated circuit U36, U18, or U41.
5. Capacitor 052 or 028.
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MFG RADIO PINOUT NOTES
YAESU 4 pin AFSK 2
PIT 3
_m____EELL_J ______________
8-pin AFSK 8 F'T-270/ 2700 require DC
PTT 6 mike blocking capacitor
1 GND 7 and a diode in series with
P'IT line.
FT-XOS vu)-l(~'- RX audio available on tip of
x09 um m +£83.32? large connector.
727 "V DID llil'l! '
FT-208 AFSK 1 RX audio on pin 2.
P11" 3
GN D 4
KENWOOD 4-pin AFSK 1
PIT 2
GND 3,4
_ _ _ .1 _______________________
513m AFSK 1
PIT 2
GND 4,5
6-pin AFSK 1
PIT 2
GND 6
._ _ _ _ ________________________ .1
8-pin AFSK 1
PT? 2
GND 7,8 A
TR 2500 "MM RX (1' 1 bl ' f
- W , m w my au 10 avai a e on hp 0
i .. . rut E?- °"° small connector.
'I'R-x600 vn-nuooJ'H-n m w W RX audio available on tip of
TH-xl W>-ll"-~ NU small connector.
TEN-TEC 4-pin AFSK 1
WT 3
GND 2
._ - - -J -
1/4 AFSK ring
stereo PTT tip
GND sleeve
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Heathkif
INDEX
, 64, 6-40, 550
5, 5-22, 5-26, 6-103
%, 5 17, 04,641, 644,648,649, 650, EH3
&, 64,641, (744,648, 6419, 6-50, 8-13
+, M
(, 64
=, 64
>, G4
!, 64
+?, (>17, 6-20
\, 6-52. 3-30
/,2| 4
Imezer transcmva, 4-1
8BITCONV command, 5-7, (>29, $14, $3.3
A Typical ASCII RTTY Contact, 5-12
A T y'pfixil Baudot RTTY Contact, 6-6
AAB command, S~21, 5-22, 844, &96, S-ICB
AB command, {>12
AEAUD command, 6-11, 6-12, 8-5, 8-15, 3-80
Abbreviation, 2L3
ACHG command, 6-18, PL '1 5
ACK 6 39, 6'44, 6-45, 7-4
ACRDISI cummand, 5-5, 5-7, 5-7.2, 523, 5-26, 6-29, 8-16
ACRIACK command, 5-6, 5-23, 5-24, 546, 653, 846, 845
ACRRTTY mmnund, 523, 5-24, 5-26, 8-17
ADELAY command, (>21, 8-16, 8-18
Advanoed Packet Operation, 71
ARK Adjuslmcmt, 4-2
AFSK drum, 34
APSKCW Keying 4-9
AFrK LEVEL, 34. 4-3 to 4-5, 6-22, 6-39
APSK tune gcm'mtur, 4-2, 4-4
AFSK operannn, #6, 445, 8-15
Acc, 4-3
AL command, 615, 8-12
ALC, 4-3, 44
ALFDISP Comrrumd, 5-5, 5-7, 5-24, 5-26, EMS, 8-19
Page X-l