Timewave DSP-232, Operating Manual, Page: 177 / 271

Chapter 9 AMTOR Operation
Lock
Immediate Command
Mode: Morse/Baudot/AMTOR Host: LO
AMTOR and Baudot: LOCK is used to force a LETTERS shift in the received data. This can be helpful if noise has
garbled the LTRS character causing FIGURES to be displayed.
Morse: LOCK instructs the DSP to lock its timing circuits to the current measured speed of a received Morse
signal; This may improve the DSPs ability to decode those signals in the presence of high noise levels. To
“un-Lock” the Morse speed and allow the DSP to track the received signal automatically, enter an
R or
MO
in the Command mode, followed by a (
RETURN
) .
MARsdisp ON
|
OFF
Default: OFF
Mode: Baudot and AMTOR, RTTY Host: MW
OFF
The DSP operates normally in Baudot and AMTOR (default).
ON The DSP translates received LTRS characters to a ( CTRL-O ), and FIGS characters to a ( CTRL-N ) then
sends these to the terminal.
MARSDISP
enables the Baudot and AMTOR operator to detect and display every character, including LTRS and
FIGS sent by the other station. ACRDISP and ALFDISP may be turned off to prevent extraneous ( RETURN )s and
LFs
from being sent to the display. If this data is retransmitted,
ACRRTTY
should be
0
, and
ALFRTTY OFF
. The
(
CTRL-O
) and (
CTRL-N
) characters will send LTRS and FIGS, respectively.
MDMon ON
|
OFF
Default: OFF
Mode: AMTOR, PACTOR and packet/Maildrop Host: Mm
OFF You don’t monitor a connected station’s activity in your Maildrop.
ON
Lets you monitor a connected station’s activity in your Maildrop.
MDMON permits you to monitor activity on your AMTOR, PACTOR or packet Maildrop, showing you both sides
of the QSO. (Packet headers aren’t shown while a caller is connected.) When no one is connected to your Maildrop,
channel activity is monitored according to the setting in
MONITOR .
Note that Maildrop connect and link status messages will be displayed even with
MDMON OFF . These status
messages are important and allow you to see who is connected to your Maildrop. They can be disabled, however,
with
UBIT 13 . (See UBIT for more information).
MFilter
n1 [, n2 [, n3 [, n4 ]]] Default: $80
Mode: Morse, Baudot ASCII, AMTOR, PACTOR and packet Host: MI
“
n ” 0 to $80 (0 to 128 decimal) specifies an ASCII character code.
(Up to four characters may be specified separated by commas.)
Use
MFILTER
to select up to 4 characters to be “filtered” or excluded from Morse, Baudot, ASCII, AMTOR,
PACTOR and monitored packets with parameters n1 - n4 , the ASCII codes for the characters you want to filter. The
special value of $80 (default) filters all characters above $7F and all control-characters except ( RETURN ) ($0D),
LF
($0A), and (
TAB
) ($09).
MHeard
Immediate Command
Mode: packet/AMTOR Maildrop Host: MH
MHEARD
displays a list of the 18 most recently heard stations.
9-18 September, 05