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:

  • 1: oresat0

  • 2: oresat0_5

  • 3: oresat1

20

c3

beacon_revision

uint8

1

the beacon revision number : 0

21

c3

crc32

uint32

4

packet checksum

Total packet length: 25 octets