diff options
Diffstat (limited to 'doc/protocols')
| -rw-r--r-- | doc/protocols/ttx-down.txt | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/doc/protocols/ttx-down.txt b/doc/protocols/ttx-down.txt index 81ede35..aa88564 100644 --- a/doc/protocols/ttx-down.txt +++ b/doc/protocols/ttx-down.txt @@ -5,9 +5,9 @@ Protocol Definition for TTX Beacon to Ground Stations Introduction ------------ -- using CW on FSK +- using CW - transceiver should send a beacon about every 60s -- transceiver sends a aknowledge frame if requested +- transceiver sends acknowledge frame if requested - parity Signs (Char Table) @@ -21,6 +21,7 @@ DEFGHIJK LMNOPQRS TUVWXYZ + Base32 Coded Signs ------------------ @@ -29,6 +30,28 @@ Base32 Coded Signs 00 | A B C D E F G H I J K L M N O P 10 | Q R S T U V W X Y Z 2 3 4 5 6 7 +Values following this encoding scheme marked with: (Base32) + + +Character Coded Numbers +----------------------- + +Num | Character +--------------- + 0 | T + 1 | A + 2 | U + 3 | V + 4 | 4 + 5 | E + 6 | 6 + 7 | B + 8 | D + 9 | N + +Values following this encoding scheme marked with: (NumChar) + + Beacon Frame: ------------- @@ -50,7 +73,7 @@ CHECKSUM (1 Sign) .. Parity Sign ... tba MSB -Aknowledge Frame +Acknowledge Frame ---------------- 'A' (1 Sign) .. Start Character (.-) |