SCS PTC-IIex, Manual

Page: 98 / 220

6 Commands
6.99 UMlauts
Default setting: 1
Parameter: 0 No umlaut in Huffman.
1 German umlauts in Huffman.
With
UMlauts
, the umlaut convention (for German umlauts) for Huffman coding is
activated or de-activated. The coding table is described in the
MOde
command. Usually
the activated umlaut convention is used, as this considerably increases the transmission
speed of German plain-language texts. The very often occurring umlaut is then being
transmitted within a Huffman packet.
Unfortunately, within the ranks of PTC clones, there is equipment that cannot convert the
umlaut (multimode controllers from the USA). In order to remain compatible with these
systems, the PTC allows the umlaut coding table to be turned off.
6.100 Unproto
Default setting: 1*2
Parameter: 1... 10,
30…41
Transmission mode for Unproto operation.
*1… 5 Number of packet repetitions.
This command allows the transmission of broadcasts (CQ calls etc). in PACTOR without
acknowledgment from the receiving station(s). An optional parameter sets the baud rate,
and the number of repetitions of packets, in the transmission. This parameter can be set
according to prevailing conditions.
Set the number of packet repetitions to 3.
cmd:
U
*3 <Return>
Now, with the following command a 200 baud transmission can be started.
cmd:
U
2 <Return>
Unproto possibilities for PACTOR-I:
Parameter Speedlevel Packet definition
1: 100 Bd FSK (standard method for Level I CQ calls)
2: 200 Bd FSK
Unproto possibilities for PACTOR-II:
Parameter Speedlevel Packet definition
3: 100 Bd DPSK (short cycle) (standard method for Level II only calls)
4: 200 Bd DPSK (short cycle)
5: 400 Bd DPSK (short cycle)
6: 800 Bd DPSK (short cycle)
7: 100 Bd DPSK (long cycle)
8: 200 Bd DPSK (long cycle)
9: 400 Bd DPSK (long cycle)
10: 800 Bd DPSK (long cycle)
84