Beacon Definition
YAML configuration file that defines this beacon can be found at: https://github.com/oresat/oresat-configs/blob/master/oresat_configs/oresat1/beacon.yaml
AX.25 Header
Dest Callsign |
Dest SSID |
Src Callsign |
Src SSID |
Control |
PID |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Value |
“S” |
“P” |
“A” |
“C” |
“E” |
“ “ |
60 |
“K” |
“J” |
“7” |
“S” |
“A” |
“T” |
F7 |
03 |
F0 |
Hex |
53 |
50 |
41 |
43 |
45 |
20 |
60 |
4B |
4A |
37 |
53 |
41 |
54 |
F7 |
03 |
F0 |
Hex (bitshifted) |
A6 |
A0 |
82 |
86 |
8A |
40 |
60 |
96 |
94 |
6E |
A6 |
82 |
A8 |
F7 |
03 |
F0 |
Offset |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
Total header length: 16 octets
Packet
Offset |
Card |
Name |
Unit |
Data Type |
Size |
Description |
|---|---|---|---|---|---|---|
0 |
c3 |
ax25_header |
octet_str |
16 |
ax.25 packet header (see above) |
|
16 |
c3 |
beacon_start_chars |
str |
3 |
the aprs start characters : {{z |
|
19 |
c3 |
satellite_id |
uint8 |
1 |
the unique oresat satellite id : 3 Value Descriptions:
|
|
20 |
c3 |
beacon_revision |
uint8 |
1 |
the beacon revision number : 0 |
|
21 |
c3 |
crc32 |
uint32 |
4 |
packet checksum |
Total packet length: 25 octets