COMMANDS
6
AUtocr
n
(n = 0 – 255)
default 72
KAM
RTTY/ASCII/AMTOR
A carriage return <CR> character is sent to the radio after n characters are typed in a line. For
example, with n = 72 a <CR> is automatically sent after 72 other characters have been typed.
The character count is reset to zero whenever a manual
<CR>
is sent from the keyboard.
AUTOLf
ON | OFF
default ON
All units
RTTY/ASCII/AMTOR/Packet
When ON, a line feed is sent to the terminal after each carriage return. This parameter should be
set ON when overprinting occurs and the terminal being used does not automatically supply its
own linefeed after a carriage return. This command affects only the data sent to the terminal, not
sent in packets.
AUTOStrt
ON | OFF
default OFF
KAM
RTTY/ASCII/AMTOR
When ON and in RTTY/ASCII Mode, the
KAM
will receive information only when preceded by the
MYAUTOST. A series of four "N"s signifying end of message, or thirty seconds of no signal will
cause the TNC to stop receiving data. No further information will be received until a new
MYAUTOST activates it again.
When ON and in FEC Mode, only AMTOR SELFEC (Selective FEC) messages beginning with the
MYSEL4 or MYSEL7 will be received. Loss of lock will cause the TNC to stop receiving data. No
further information will be received until a new MYSEL4 or MYSEL7 activates it again.
See also: myautost, mysel4, mysel7
AX25l2v2
ON | OFF
default ON
KPC-1
/
KPC-2
/
KPC-2400
Packet
default ON/ON
KAM
/
KPC4
Packet
This command provides compatibility with all known packet units implementing AX.25 protocol.
When ON, Level 2 Version 2 protocol is implemented and the TNC will automatically adapt to
whichever version the connecting station is using. When OFF, Level 2 Version 1 is implemented.
Set this command to OFF if you need to digipeat through other units which do not digipeat version
2 packets. You may also find benefit from setting this command to OFF when using several digi-
peaters (not nodes) to send packets, or when conditions are marginal between the two stations in-
volved. NOTE: Changing this setting after connecting to another station will have no effect on the
current connection.
The major difference in V1 and V2 protocol is the method used to handle retries. In the connected
mode, if a packet is sent and not acknowledged, Version 1 will resend the entire packet and then
disconnect if the RETRY count is reached. Version 2 will first send a poll, the response to this poll
will determine if the packet was received. It is possible that the ack was collided with and there-
fore the packet does not need to be resent. If the packet was not received, it will be re-transmit-
ted. Each time a poll is answered, the RETRY count is reset to 0. If the RETRY count is reached,
Version 2 will attempt to re-connect unless RELINK is OFF. If the re-connect attempt is unsuccess-
ful, the Version 2 will issue a disconnect.
See also: relink, retry, tries
