Kantronics KPC-4 - NAVTEX;AMTEX Operation

Once a message has been received from a particular station with less than a specified
amount of errors, it will not be printed again, as the receiving system keeps track of
the message numbers it has received. If it then sees the same message class and
peak from the same transmitting station, it will not output the message to the
terminal.
For ARRL AMTEX bulletins, the defined B1 codes are:
A ARRL issued bulletins
C CRRL issued bulletins (Canadian)
I IARU issued bulletins
J JARL issued bulletins
S AMSAT issued bulletins
X Miscellaneous
and the currently assigned message classes are:
A Emergency bulletins
B Priority bulletins
D Reserved
E DX bulletins
G General bulletins
K Keplarian bulletins
P Propogation forecasts
S Satellite bulletins
X Miscellaneous bulletins
NAVTEX/AMTEX Operation
To enter the NAVTEX/AMTEX mode, you simply type NAVTEX from the cmd: prompt
and press return. At this point you will see nothing on the terminal until a valid
NAVTEX message is received.
To exit the NAVTEX mode and return to the cmd: prompt, type a Ctrl-C followed by the
letter X. (Do not hold the control key when you type the X.)
Before entering the NAVTEX mode (while you still have the cmd: prompt) you may
specify which stations you wish to receive using the NAVSTA command. For instance,
if I wish to copy AMTEX bulletins issued by ARRL, but do not want those from other
stations (CRRL for example), I would type NAVSTA A at the cmd: prompt. To monitor
all stations, simply type NAVSTA ALL.
You may also specify which message classes you wish to receive by using the NAVMSG
command. If you want the Satellite bulletins and DX bulletins, you would type
NAVMSG ES and press return. Note that if you eliminate message classes A, B, or D
from the list of valid message classes, you will receive a WARNING message from the
KAM since the NAVTEX specification requires that these classes must be printed at
least once. To set your system to copy all message classes, type NAVMSG ALL.
The NAVERR command is used to specify the percent of errors allowed in a received
message before the KAM considers the message as not being received properly.
In the event you wish to clear the message sequence numbers, allowing all messages to
be
received
again,
use
the
NAVCLR
command.
If
the
Navtex
mode
is
used
infrequently,
it is advisable to clear the numbers, since the transmitting station may have already
wrapped sequence numbers back around to those you have stored.
50B . NAVTEX/AMTEX
E O Copyright 1990, Kantronics, Inc. All Rights Reserved.
Version 3.0 Aug. 13, 1990 Duplication of this manual or the firmware without
Operations Manual , permission of Kantronics, Inc. is prohibited.