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During autobaud (setup), when you entered your callsign, your “selcal” was cal
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culated and stored. For details, see the MYSELCAL command.
Transmitting Mode B SELFEC
To transmit a Mode B SELFEC broadcast, type FEC followed by the selcal of the
stations you wish to send to and press return. The KAM’98 keys your radio, the
bargraph goes dark, and the red transmit LED lights. The KAM’98 sends the
Selcal you entered as the preamble to a transmission, followed by any message
you type on the keyboard. To return to receive, type <Ctrl+C> E. The KAM’98
unkeys the transmitter after all of the data has been transmitted, and will receive
ANY FEC transmission. Should you desire to receive just SELFEC transmis
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sions, you must have AUTOSTRT ON in the KAM’98.
When you are ready to transmit again, type <Ctrl+C> T. The KAM’98 will again
send the selcal you entered previously and then your next message. The selcal is
transmitted each time you start a new transmission while in the the SELFEC
mode. To cancel SELFEC mode, type <Ctrl+C>X to return to the Command
mode.
Listen AMTOR operation
To enter Listen AMTOR mode, the KAM’98 must first be in Command mode
(cmd:). Type LAMTOR and press return. This places the KAM’98 in a moni
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tor-only mode, enabling you to listen to Mode A, Mode B, or SELFEC AMTOR
transmissions. If you are monitoring a Mode A link between two other stations, it
is very possible that you will miss parts of the transmissions and print repeated
information. This occurs because you are copying two stations separated from
each other and from you. Also, in AMTOR, stations will repeat information that
is not received properly. You may “catch” these repeat copies! If you are receiv
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ing what appears to be random garbage characters while monitoring Mode A
AMTOR, you can force the KAM’98 to attempt to re-synchronize by typing
<Ctrl+C> R.
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NOTE: You cannot transmit from the LAMTOR mode.
Non-Packet Modes of Communication AMTOR Operation
User’s Guide 120 KAM’98 v 8.3
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