mirror of
https://github.com/n5ac/mmsstv.git
synced 2025-12-06 04:12:03 +01:00
106 lines
2.3 KiB
Plaintext
106 lines
2.3 KiB
Plaintext
MMSSTV FSKID
|
||
|
||
[Code composition]
|
||
|
||
The FSKID used in MMSSTV is sent by using 45.45 baudot FSK. One symbol is composed of 6 bits (B5-B0).
|
||
|
||
1500Hz 300ms (1900Hz in a narrow mode)
|
||
2100Hz 100ms
|
||
1900Hz 22ms start bit
|
||
B5 22ms (1=1900Hz, 0=2100Hz)
|
||
B4 22ms :
|
||
B3 22ms :
|
||
B2 22ms
|
||
B1 22ms
|
||
B0 22ms
|
||
B5 22ms
|
||
:
|
||
B0 22ms
|
||
B5 22ms
|
||
:
|
||
B0 22ms
|
||
:
|
||
|
||
[Call sign]
|
||
|
||
$2A C1 C2 ... CN $01 XSUM
|
||
XSUM = C1 xor C2 xor ... xor CN
|
||
|
||
C1 to CN are modified ASCII code. Code symbols $20 to $5F are represented by $00 to $3F in Cx (x = 1 to N).
|
||
|
||
[Contest number (3 digits or 4 digits and less than 4096)]
|
||
Following the call sign, MMSSTV sends the contest number as follows:
|
||
|
||
$02 HH LL XSUM
|
||
HH = Upper 6 bits of the number
|
||
LL = Lower 6 bits of the number
|
||
XSUM = $02 xor HH xor LL
|
||
|
||
[Contest number (any string)]
|
||
Following the call sign, MMSSTV sends the contest number as follows:
|
||
|
||
S1 S2 ... SN $01 XSUM
|
||
XSUM = S1 xor S2 xor ... xor SN
|
||
Si (i = 1 to N) is ASCII code minus $20. The original code symbols $30 to $5F are represented by $10 to $3F.
|
||
|
||
[Notice]
|
||
You can freely use the MMSSTV compatible FSKID in your program. You do not have to notify me in any case.
|
||
|
||
73, Mako
|
||
|
||
|
||
******************** Japanese ********************
|
||
|
||
MMSSTVのFSKID
|
||
|
||
MMSSTVのFSKIDは6bits(B5-B0)を１シンボルとする以下のようなFSK(45.45bps)で伝送します。
|
||
|
||
1500Hz 300ms (狭帯域モード時は1900Hz)
|
||
2100Hz 100ms
|
||
1900Hz 22ms start bit
|
||
B5 22ms (1=1900Hz, 0=2100Hz)
|
||
B4 22ms :
|
||
B3 22ms :
|
||
B2 22ms
|
||
B1 22ms
|
||
B0 22ms
|
||
B5 22ms
|
||
:
|
||
B0 22ms
|
||
B5 22ms
|
||
:
|
||
B0 22ms
|
||
:
|
||
|
||
コールサイン
|
||
~~~~~~~~~~~~
|
||
以下のように伝送します。
|
||
|
||
$2A C1 C2 ... CN $01 XSUM
|
||
XSUM = C1 ～ CNまでのXOR値
|
||
|
||
C1-CNのコールサインはASCIIコード$20～$5Fまでを$00～$3Fに変換して伝送します。
|
||
|
||
コンテストNR(3桁または4桁の数値で値が4095以下の場合)
|
||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
コールサインに続けて以下のように伝送します。
|
||
|
||
$02 HH LL XSUM
|
||
HH = NRの上位6bits
|
||
LL = NRの下位6bits
|
||
XSUM = $02 ～ MMまでのXOR値
|
||
|
||
コンテストNR(任意の文字列の場合)
|
||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
コールサインに続けて以下のように伝送します。
|
||
|
||
S1 S2 ... SN $01 XSUM
|
||
XSUM = S1 ～ SNまでのXOR値
|
||
|
||
S1-SNの文字列はASCIIコード$30～$5Fまでを$10～$3Fに変換して伝送します。
|
||
|
||
その他
|
||
~~~~~~
|
||
MMSSTVコンパチブルのFSKIDを他の装置に組み込むことは完全に自由です。私への連絡は一切必要ありません。
|
||
|
||
73, Mako |