Timewave PK-232MBX, Руководство по эксплуатации

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PK-232 MBX – OPERATING MANUAL BAUDOT AND ASCII OPERATION
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6.5.4
Sending a Synchronous Idle or DIDDLE
Some RTTY users like to send an idle signal when no data is being transmitted. To allow
for this the PK-232 has the DIDDLE command. See the Command Summary for more in-
formation.
6.5.5 Echoing Transmitted Characters As Sent
Since Baudot RTTY at 45 baud is rather slow, some users like to know just when the char-
acters they are actually being sent. The EAS command when turned ON will Echo charac-
ters to the display only when they are sent over the air.
6.5.6 Sending Only Complete Words
Some RTTY users like to have their words sent out only when they are complete. This al-
lows the word you are currently typing to be edited as long as you have not typed a
<Space> character. Turning WORDOUT ON activates this feature. See the Command
Summary for more information.
6.5.7 Operating on the Wrong Sideband
In RTTY operation it is important to be operating on the correct sideband, otherwise other
stations will not be able to copy your transmissions. If you find another station operating
on the wrong sideband, you can reverse your receive sense with the RXREV command so
you will not have to change sidebands yourself.
Similarly, if someone tells you that you are on the wrong sideband, you can correct your
transmit signal sense with the TXREV command. See the Command summary for more in-
formation on these commands.
6.5.8
Unshift-On-Space (USOS)
The Unshift-On-Space (USOS Command) automatically changes the received Baudot/Mur-
ray code characters to the LETTERS or lower case condition after any "space" character is
received.
When operating Baudot RTTY under poor conditions, a received LETTERS-SHIFT character
can be garbled, or another character can be wrongly interpreted as a FIGURES-SHIFT
character. Turning USOS ON helps reduce reception errors under these conditions.
Some commercial, weather and utility RTTY services send groups of numbers separated
by spaces. When receiving such non-amateur signals, USOS should be OFF to prevent dis-
playing LETTERS-shifted characters when the originator may have intended the data to be
FIGURES-shifted.
6.5.9 Operating at Commercial or VHF Wide RTTY Shifts
Most commercial stations found in the non amateur Short Wave bands operate with a
wide Frequency Shift keying of either 425 or 850 Hz shift. To allow these stations to be re-
ceived the WIDESHFT command must be turned ON. If your license permits, you can also
transmit to these stations when WIDESHFT is ON.
6.5.10 The CODE Command for International RTTY Compatibility
The CODE command allows the PK-232 to receive (and sometimes send) other RTTY char-
acter sets. Part 97.69 of the FCC rules specifies that the International Telegraph Alphabet