ESEO UHF Beacon Information

You can find the TLEs here. 

Frequency: 437.00 MHz

Transmission Format: See attachment 1

Modulation Format: GFSK

Beacon schedule:

• Every 1 minute when in safe mode and just after deployment during the de-tumbling phase

• Every 1 minutes when in sunlight

• Every 5 minutes when in eclipse

Beacon Types (transmitted cyclically):

1. General

2. Power System

3. OBDH

4. AOCS and sensor/actuator

5. FDIR and TMTC

6. Payload

Additional beacon (not in nominal rotation): Emergency

Telemetry equations: See attachment 2

Destination Address is: ESEO 

Source Address is: IW4DUL 

The following information is stored in every packet sent from the spacecraft in the Address part of the message, as per AX.25 protocol. 

First Byte
Destination Address Subfield	Source Address Subfield
A1 A2 A3 A4 A5 A6 A7	A8 A9 A10 A11 A12 A13 A14

Byte	ASCII	Bin Data  MSB           LSB	Hex Data
A1	E	10001010	8A
A2	S	10100110	A6
A3	E	10001010	8A
A4	O	10011110	9E
A5	Space	01000000	40
A6	Space	01000000	40
A7	SSID	01100000	60
A8	I	10010010	92
A9	W	10101110	AE
A10	4	01101000	68
A11	D	10001000	88
A12	U	10101010	AA
A13	L	10011000	98
A14	SSID	01100001	61