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o If you are using an Timewave PAKRATT program, check the program<br />
manual for instructions on starting an ARQ AMTOR contact.<br />
o<br />
If you are using a terminal simply type "ARQ NNML" to<br />
start a CCIR 476 ARQ contact, or "ARQ VTMFFFF" to start a<br />
CCIR 625 ARQ contact.<br />
After your <strong>PK</strong>-<strong>232</strong> has locked or synchronized with the distant station,<br />
you may begin your conversation.<br />
N7ML N7ML DE YOURCAL YOURCAL...etc<br />
7.3.4 ARQ AMTOR <strong>Operating</strong> Fundamentals<br />
When you finish typing your comments or traffic to the other station<br />
and wish the distant station to transmit to you Do Not type "KKK" or<br />
anything like that!<br />
o Do type a plus sign immediately followed by a question mark (+?).<br />
"+?" is a software changeover command that switches your system from<br />
being the "Information Sending Station" (ISS) to the "Information<br />
Receiving Station" (IRS), and switches the distant system from being<br />
the IRS to being the ISS. When your distant partner sees the "+?" he<br />
knows he can begin typing comments or traffic.<br />
NOTE:<br />
When discussing ARQ operation, we use the terms "Information<br />
Sending Station" and "Information Receiving Station" instead<br />
of "transmit" and "receive" since in ARQ AMTOR both stations<br />
are rapidly switching from transmit to receive.<br />
o<br />
Don't bother with multiple call signs and "over-to-you" routines<br />
or "KKK" used in Baudot and ASCII RTTY operation. The system<br />
does it all for you when you type the "+?".<br />
The FCC requires station identification once every ten minutes. It's<br />
sufficient to begin with "QRA (mycall)" or end your transmission with<br />
"QRA (mycall)" before the "+?" changeover code, or use the <br />
"HERE-IS" to send your own Auto-AnswerBack message.<br />
7.3.5 Ending an ARQ AMTOR Contact<br />
When you've finished your "final finals" to the distant station and<br />
both stations are ready to end the Mode A (ARQ) contact, you can end<br />
the contact and terminate the link in several different ways:<br />
o<br />
Type to return to Command Mode, then type "R" to break<br />
the link.<br />
The "R" command breaks the ARQ link immediately and returns your<br />
system to AMTOR Standby. This can be used as an "Emergency<br />
Shutdown" if you need to take your transmitter off the air.<br />
o<br />
Type to break the link and send your Morse ID.<br />
Your <strong>PK</strong>-<strong>232</strong> switches to the Morse Mode, sends your call sign at<br />
the speed set by MSPEED, and then shuts off your transmitter.<br />
4/91 7-5<br />
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