Telemetry – HB9HSLU

The telemetry portion of the beacon contains a comma-separated list of text values of selected housekeeping parameters. The parameter values are already calibrated to SI units and only require minimal conversion or interpretation.

	Parameters (one per cell)	Unit	Format	Examples
				Value	Meaning
Time	On-board time counter Relative to spacecraft epoch of: 2016-01-01 at 00:00:00	2EE-16s	0xhhhhh hhhhhhh	0x05723B DC59CB	5988188707275 ticks -> 91372508.351s -> 2018-11-23 13:15:08.351
Analog measurements	Voltage	V	d.ddd	3.242	3.242 V
	Current	mA	ddd	264 86	264 mA 86 mA
	Temperature	C	[-]dd	28 -4	28 C -4 C
RF measurements	RSSI	dBm	-ddd	-67 -103	-67 dBm -103 dBm
	AFC	Hz	[-]ddddd	-31390 8170	-31390 Hz 8170 Hz
Link Settings	Transfer Layer idle frames Downlink Reed-Solomon Downlink randomizer Downlink convolutional Uplink BCH Uplink derandomizer	n/a	0xhh i.e. 1 byte bit field in hexadecimal form, idle frames is MSB.	0xEC	0b11101100 All enabled except convolutional

Message example, using first example of each parameter:

$HK,0x05723BDC59CB,3.242,264,28,-67,-31390,0xEC*

Ranging principles