Specifications
signals with the SIGNAL IDENTIFICATION (SIAM) mode. However, you can
manually step through all the available RTTY receiving speeds with the
RBAUD command.
The following "Function Keys" and immediate commands are included for
Baudot RTTY operating convenience.
Immediate Commands from the Command Mode:
"L" Forces LETTERS case in receive.
"N" Forces FIGURES case in receive.
"R" Switches system to receive mode, forces LETTERS case.
"X" Switches system to transmit mode and forces immediate
entry into Converse mode.
"K" Go to CONVERSE Mode in order to load Transmit type
ahead buffer.
"Function Key" characters embedded in transmitted text:
<CTRL-B> Sends AAB string as a HEREIS message.
<CTRL-E> Sends "Who Are You" request to distant station.
<CTRL-O> Sends LETTERS shift character.
<CTRL-N> Sends FIGURES shift character.
<CTRL-D> Shuts off transmitter after sending character buffer.
<CTRL-F> Sends call sign in Morse and shuts off transmitter.
<CTRL-T> Sends the Time if the DAYTIME clock has been set.
6.5.1 Changing Speed
Assume you've been receiving at 45 bauds and wish to increase the baud
rate in steps. From the Command mode, type RB U (Up) followed by an
<Enter>. The PK-900 responds with:
RBaud was 45
RBaud now 50
The RBAUD command sets the Baudot RTTY speed. The most common speed
is 45 bauds on HF, but other speeds including commercial speeds are
supported. See the Command Summary for all the supported speeds.
6.5.2 Formatting Your Transmitted and Received Text
The default configuration of the PK-900 RTTY parameters are set for
natural conversation and traffic. Sometimes it is desired to alter
how your text looks on the screen of the station you are talking to.
The commands ACRRTTY and ALFRTTY allow for customizing the Carriage
Return and Linefeed characters in your transmitted text.
To allow for changing how received text is displayed on your screen or
printer, see the ACRDISP and ALFDISP commands in the Command Summary.
MARS operators have some special requirements for RTTY operation and
displaying text. To accommodate these, the CRADD and MARSDISP
commands are included and should be reviewed in the Command Summary.
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