summaryrefslogtreecommitdiff
path: root/doc/protocols
diff options
context:
space:
mode:
Diffstat (limited to 'doc/protocols')
-rw-r--r--doc/protocols/ttx-down.txt29
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 (.-)