You are now linked with the other station, and, since you initiated the link, you are the
Information Sending Station (ISS). You now type a message on the keyboard, and the RAM
Plus sends this data to the other station. When you are finished with your message and want
to let the other station send to you, you must perform a "change-over". In AMTOR ARQ, this
is done by typing "+?" (not the quotes, just the plus and question mark). The other station
becomes the ISS, and you become the Information Receiving Station (IRS). When the other
station is through talking and wants you to talk again, he sends a
+? to you. When this appears
on your screen, you become the ISS and may again send to the other station.
It is possible to interrupt the other station - that is, when you are the IRS and want to become
the ISS, you may "seize" the link by typing CONTROL-C and then the letter T.
When you are finished with your qso and want to discontinue the link (break the link), type
CONTROL-C and the letter D. If you are the IRS, a changeover occurs and then the RAM Plus
sends the proper shutdown sequence to the other station. If you are the ISS, it simply performs
the proper shutdown sequence. When the link has been terminated, you again see the
<AMTOR STANDBY> message on your screen.
When you finish operating AMTOR and want to change to another mode, you must return to
the Command mode. Type CONTROL-C and then the letter X. This exits the AMTOR mode
and returns to Packet mode, giving you the cmd: prompt from the RAM Plus.
LAMTOR
If you want to monitor AMTOR stations that are already linked to each other, you must use
the LAMTOR (Listen AMTOR) mode. To enter this mode, first you must have the cmd: prompt
from the KAM Plus, then type LAMTOR and press return. The RAM Plus enters LAMTOR,
and allows you to monitor ARQ or FEC AMTOR transmissions from other stations. NOTE:
You can not transmit from the LAMTOR mode.
When you are finished monitoring, you can return the RAM Plus to the Command mode and
leave LAMTOR by typing CONTROL-C and then the letter X.
FECAMTOR
When operating this mode using AFSK (mic input), set your HF radio in lower sideband (LSB).
This is general practice in the amateur community for digital communications. You should also
have the VOX disabled since the RAM Plus will key your transmitter. When transmitting, the
amount of power generated by your station can be adjusted with the mic gain control on your
radio. You should set this control just to the point of maximum power output. If your radio
has an ALC indicator, adjust mic gain for minimal indication.
You may also operate FEC mode with your RAM Plus by typing FEC and pressing return
at the cmd: prompt. This places your RAM Plus in the FEC mode of operation, allowing
you to receive and transmit FEC AMTOR. This mode is very useful when you want to have
a discussion with several people at the same time. Only one station may transmit at a time,
but everyone will be able to copy the FEC "broadcasts." When it is your turn to transmit,
type CONTROL-C and then the letter T to start transmitting, type your message, and
then type CONTROL-C and E to return to receive.
You could have an FEC roundtable discussion from the AMTOR STANDBY mode, but you
will receive the <AMTOR STANDBY> message every time a station stops transmitting.
When you are finished with the FEC mode and want to change to another mode, type
CONTROL-C followed by the letter X. You receive a command prompt (cmd:) from the
KAM Plus.
GETTING STARTED
G12
April 15. 1993 KAM Plus
© Copyright 1993. Kantronics Co .• Inc. All Rights Reserved.
Duplication of this manual or the firmware without permission of Kantronics Co., Inc. is prohibited.
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