Timewave DSP-232, Operating Manual

Page: 193 / 271

Chapter 10 Morse Operation
~ CH (Morse only)
{ SH
] SHCH
x ’
|
E (RTTY only)
’ YU
q YA
CODE 4
: Katakana
Katakana is the phonetic character set used in Japan for spelling out words of foreign (to Japan) origin. The
Japanese also use Katakana for Morse and some computer communication. There are about 50 Katakana characters.
CODE 4 translates the Katakana Morse code into an 8-bit extended version of ASCII. The characters displayed are
generally in the range from $A0 to $DF, except for numerals and punctuation. If you’re using
CODE 4
, remember
to set the DSP for AWLEN 8 , PARITY 0 and 8BITCONV ON .
CODE 5
: Transliterated Katakana
This is similar to CODE 4 except that the extended ASCII is transliterated into English equivalents for easier
reading. The Morse characters are translated into 2- and 3-letter syllables.
CODE 6 : European
This is primarily for users with German language terminals. The differences in Morse coding are as follows:
Morse
CODE
0
CODE
6
.-.-
$5B $5B
---.
$5C $5C
..-- $5E $5D
.--.-
$5D
In addition,
CODE 6 avoids the use of square brackets ($5B, $5D) in monitored packet headers and Maildrop
prompts, using parentheses instead. US ASCII square bracket characters are used as extended alphabetic characters
in most languages outside of English.
CODE 7
: TOR lowercase
Meaning Morse Baudot AMTOR Packet
TOR (lowercase) — — RX/TX —
CODE 7 applies to AMTOR operation only. It codes upper and lowercase letters using the NULL character as a
shift while in LTRS case. This protocol is used by APLINK stations, European mailboxes, the AMT-3 and G4BMK
software. The difference between CODE 7 and CODE 2 (Cyrillic) upper/lower case is that CODE 2 uses LTRS for
upper case and NULL for lowercase, while CODE 7 uses the NULL to toggle between upper and lowercase. CODE
7 is invisible to stations using classic AMTOR (CODE 0). However, a CODE 7 station talking to a station using
CODE 2 (AEA’s already existing upper/lower case protocol) will result in upper/lowercase reversals or constant
lower case text.
CODE 8 : Extended TOR lowercase
Meaning Morse Baudot AMTOR Packet
Extended Lower Case — — — —
CODE 8 also applies to AMTOR only. It includes the features of CODE 7 above, and additionally codes new
punctuation characters using NULL as an escape while in FIGS case. Thus CODE 8 supports all 95 printable ASCII
characters ($20-7E) plus CR, LF, space and ENQ while in AMTOR operating mode, but not BELL, backspace and
TAB. At the moment, this protocol is used only on links between mailboxes forwarding messages. It could be used
with the AEA AMTOR-to-Packet Gateway if all users had CODE 8. (CODE 8 isn’t invisible to other users.)
EAS ON | OFF Default: OFF
September, 05 10-7