Specifications

11.7 PACTOR Operating Tips
The following "Special Function Characters" and immediate commands are
included for PACTOR operating convenience.
Immediate Commands from the Command Mode:
"PT" Selects the PACTOR mode
"PACTO" Selects the PACTOR mode as above
"PTCONN <CALL>" Starts a linked connect and forces Converse
"PTSEND" Starts an unproto transmission and forces Converse
"R" Stops sending immediately, forces PACTOR Standby
"PTLIST" Allows reception of both unproto and linked
transmissions
"PTHUFF <ON|OFF>" Off - prevents Huffman compression
On - allows automatic use of compression
"PT200 <ON|OFF>" Off - prevents 200 baud operation
On - allows automatic speed selection
"PTOVER <$HH>" Used to select the changeover character
Defaults to <CTRL-Z> ($1A)
Special Function Characters embedded in transmitted text:
<CTRL-B> Sends your AAB string as a HERE-IS message
<CTRL-D> Stops sending after the transmit buffer is empty
<CTRL-E> Sends a "Who Are You" request to the other station
<CTRL-F> Same as <CTRL-D> but sends your callsign in Morse
<CTRL-T> Sends the TIME if the DAYTIME clock has been set
<CTRL-Z> Changes your PK-900 from send (ISS) to receive
(IRS)
11.7.1 ARQ Break-In (ACHG Command)
In the linked or connected mode, (ARQ), when you're the "Information
Receiving Station," you can use the "ACHG" command to interrupt the
distant station's comments.
As the "Information Receiving Station," you normally rely on the
distant station to send the <CTRL-Z> to "change-over" at the end of
his comments. ACHG is a command that forces both systems to reverse
the "Information Receiving" and "Information Sending" status of the
link.
o Use the ACHG command only when really needed to interrupt the
distant station.
11.7.2 Entering Your Auto-AnswerBack (AAB)
AEA PACTOR allows you to request the identity of the station you are
conversing with by sending your PK-900 a <CTRL-E>. This causes the
PK-900 to send an inquiry (WRU) request to the other station.
For this reason, you should set your own Auto-AnswerBack (AAB) message
to "DE YOUR-CALL". Your PK-900 will automatically send the AAB
message when another station requests your identity, and
then stop sending.
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