subset of Mode B AMTOR is called SELFEC—Selective FEC. In this mode, sta
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tions limit reception to messages addressed to their “selcal”.
The third mode of AMTOR operation is listen-only, called LAMTOR. In this
mode, you can monitor two stations communicating with each other using Mode
A AMTOR; you can also monitor SELFEC transmissions that do not contain
your SELCAL.
+
For more information on AMTOR theory, you may want to read the American
Radio Relay League Operating Manual.
Mode A (ARQ) Operation
To operate Mode A AMTOR, you must first be sure you are in Command Mode
(cmd:). Type AMTOR and press return. This places your KAM’98 in the
AMTOR standby mode, and you will see the message “AMTOR STANDBY” on
your terminal. In this mode you can monitor other stations transmitting FEC
(calling CQ), transmit FEC to call CQ, and respond to a Mode A link request
from another station. NOTE: You will not be able to monitor or transmit FEC
from this mode if ARQBBS is ON. If AUTOSTRT is ON, you will only copy
SELFEC transmissions from other stations if they contain your SELCAL in the
transmission.
Calling CQ
To call CQ from this mode, type <Ctrl+C>T. The KAM’98 keys your transmit
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ter, the bargraph on the KAM’98 goes dark, and the transmit LED lights. Now,
type your CQ message on the keyboard. A typical CQ message would be like the
following:
CQ CQ CQ CQ DE NØGZZ NØGZZ (NGZZ)
CQ CQ CQ CQ DE NØGZZ NØGZZ (NGZZ)
CQ CQ CQ CQ DE NØGZZ NØGZZ (NGZZ)
SELCAL: NGZZ NGZZ
PSEKKK
When you’ve finished typing your CQ, type <Ctrl+C> E, instructing the
KAM’98 to return to the AMTOR Standby mode. After all of the data has been
transmitted, the KAM’98 will send the AMTOR STANDBY MESSAGE TO
AMTOR Operation Non-Packet Modes of Communication
KAM’98 v 8.3 117 User’s Guide
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