o If you are using an Timewave PAKRATT program, check the program
manual for instructions on starting an ARQ AMTOR contact.
o If you are using a terminal simply type "ARQ NNML<Enter>" to
start a CCIR 476 ARQ contact, or "ARQ VTMFFFF<Enter>" to start a
CCIR 625 ARQ contact.
After your PK-232 has locked or synchronized with the distant station,
you may begin your conversation.
N7ML N7ML DE YOURCAL YOURCAL...etc
7.3.4 ARQ AMTOR Operating Fundamentals
When you finish typing your comments or traffic to the other station
and wish the distant station to transmit to you Do Not type "KKK" or
anything like that!
o Do type a plus sign immediately followed by a question mark (+?).
"+?" is a software changeover command that switches your system from
being the "Information Sending Station" (ISS) to the "Information
Receiving Station" (IRS), and switches the distant system from being
the IRS to being the ISS. When your distant partner sees the "+?" he
knows he can begin typing comments or traffic.
NOTE: When discussing ARQ operation, we use the terms "Information
Sending Station" and "Information Receiving Station" instead
of "transmit" and "receive" since in ARQ AMTOR both stations
are rapidly switching from transmit to receive.
o Don't bother with multiple call signs and "over-to-you" routines
or "KKK" used in Baudot and ASCII RTTY operation. The system
does it all for you when you type the "+?".
The FCC requires station identification once every ten minutes. It's
sufficient to begin with "QRA (mycall)" or end your transmission with
"QRA (mycall)" before the "+?" changeover code, or use the <CTRL-B>
"HERE-IS" to send your own Auto-AnswerBack message.
7.3.5 Ending an ARQ AMTOR Contact
When you've finished your "final finals" to the distant station and
both stations are ready to end the Mode A (ARQ) contact, you can end
the contact and terminate the link in several different ways:
o Type <CTRL-C> to return to Command Mode, then type "R" to break
the link.
The "R" command breaks the ARQ link immediately and returns your
system to AMTOR Standby. This can be used as an "Emergency
Shutdown" if you need to take your transmitter off the air.
o Type <CTRL-F> to break the link and send your Morse ID.
Your PK-232 switches to the Morse Mode, sends your call sign at
the speed set by MSPEED, and then shuts off your transmitter.
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