SCS PTC-IIex, Manual

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6 Commands
Unproto possibilities for PACTOR-III:
Parameter Speedlevel Packet definition
30: 1 short cycle
31: 2 short cycle
32: 3 short cycle
33: 4 short cycle
34: 5 short cycle
35: 6 short cycle
36: 1 long cycle
37: 2 long cycle
38: 3 long cycle
39: 4 long cycle
40: 5 long cycle
41: 6 long cycle
If no argument is given, then the PTC-IIex uses the mode that was last used, or the default
setting. The actual mode is shown on the LED status field.
The Unproto mode may be terminated with a QRT character, a
Disconnect
. It is
always possible to abort a unproto transmission using the command
DD
.
A repetition rate of 3 does not mean that the text appears on the screen of the receiving
station 3 times. In this case, the PTC increases the redundancy of the signal by repeating
it. The transmission takes longer, but there is a correspondingly greater chance of
receiving it correctly. At the receiving station, once a packet is correctly received, it will
not be received again. A data packet may be repeated 3 times, but will only appear once
at the receiving station(s). It is recommended that the repetition rate should be adjusted
according to propagation conditions. A greater repetition rate, and lower baud rate, for
poor conditions, and conversely a lower repetition rate, and higher baud rate, for better
conditions.
After approximately 4 minutes of idle transmissions, an automatic QRT is carried out.
6.101 UPDATE
The
UPDATE
command renews the PACTOR firmware in the Flash ROM of the PTC-
IIex. It should only be used together with the corresponding program on the PC.
6.102 USer
Remote
The User command enables an overview of all presently operating PTC-IIex links. Here
the PTC-IIex gives out the callsign of the opposite station, as well as the digipeater list
etc. In contrast to the
CStatus
command in the
pac:-
menu, the
User
command also
lists an operating PACTOR link, under channel number 0. (This channel is free, as the PR
channel 0 only serves as a
monitor channel and thus no link is possible).
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