Radio Link Budgets of ASRTU-1 Satellite

Command Uplink

	Data	Unit
Frequency	145.8	MHz
Modulation Type	FSK-FM	-
Data Rate	1000	bps
Distance	2226	km
TX Power	7	dBw
TX Gain	14	dBi
Ant Polarization Loss	3	dB
Path Loss	142.6	dB
RX Gain	-6	dBi
Implementation Loss	1.0	dB
RX Input Level	-101.6	dBm
Sensitivity	-105	dBm
Margin	3.3	dB

Telemetry Downlink

	Data	Unit
Frequency	436.2	MHz
Modulation Type	BPSK	-
Data Rate	9600	bps
Distance	2226	km
TX Power	-3	dBw
TX Gain	-6	dBi
Ant Polarization Loss	3	dB
Path Loss	152.2	dB
RX Gain	17.5	dBi
Noise Figure	2	dB
Required Eb/N0	9.6	dB
Implementation Loss	2	dB
Coding Gain	6	dB
Margin	3.3	dB

FM Repeater Uplink

	Data	Unit
Frequency	145.8	MHz
Distance	1535	km
Modulation Type	FM	-
TX Power	7	dBw
TX Gain	7	dBi
Ant Polarization Loss	3	dB
Free Space Loss	139.4	dB
Other Path Loss	1	dB
RX Gain	-6	dBi
RX Input Level	-105	dBm
Sensitivity	-112	dBm
Margin	6.5	dB

FM Repeater Downlink

	Data	Unit
Frequency	435.4	MHz
Distance	1535	km
Modulation Type	FM	-
TX Power	-3	dBw
TX Gain	-6	dBi
Ant Polarization Loss	3	dB
Free Space Loss	148.9	dB
Other Path Loss	1	dB
RX Gain	14	dBi
RX Input Level	-117.9	dBm
Sensitivity	-121	dBm
Margin	3	dB

Image Downlink

	Data	Data	Unit
Frequency	10.46	10.46	GHz
Modulation Type	QPSK	QPSK	-
Data Rate	1	10	Mbps
Distance	1535	1535	km
TX Power	3	3	dBw
TX Gain	5	12	dBi
Ant Polarization Loss	3	3	dB
Path Loss	175.7	175.7	dB
RX Gain	42	45	dBi
Noise Figure	2.0	2.0	dB
Required Eb/N0	2.6	2.6	dB
Implementation Loss	2.0	2.0	dB
Margin	3.8	3.8	dB