TRISAT Operations
The TRISAT nanosatellite has a downlink in the UHF frequency band. The transmit power is 1 W. The modulation used is a GFSK modulation with a modulation index of 0.5. The CCSDS TM data protocol is used. The combined Convoltional (7 1/2) with Reed-Solomon (255,223) coding is used.
TRISAT periodically transmits beacon signals in the form of several CCSDS TM frames with a period of approximately 40 seconds. Additionally, CCSDS TM frames are transmitted in response to CCSDS TC queries, which are expected to take place when the satellite is above the GS at the University of Maribor.
Downlink parameters
| Frequency | 435.6125 MHz |
| Bandwidth | Less than 25 kHz |
| Transceiver transmit power | 1 W |
| Modulation | GFSK, m = 0.5 |
| Baud rate | 9766 bps |
| Protocol | CCSDS TM |
| Encoding | Reed Solomon (255,223) coding Convolutional (7 1/2) coding |
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TRISAT-R Operations
The TRISAT nanosatellite has a downlink in the UHF frequency band. The transmit power is 1.6 W. The modulation used is a GFSK modulation with a modulation index of 0.5. The CCSDS TM data protocol is used. The combined Convoltional (7 1/2) with Reed-Solomon (255,223) coding is used.
TRISAT periodically transmits beacon signals in the form of several CCSDS TM frames with a period of approximately 40 seconds. Additionally, CCSDS TM frames are transmitted in response to CCSDS TC queries, which are expected to take place when the satellite is above the GS at the University of Maribor.
Downlink parameters
| Frequency | 435.6125 MHz |
| Bandwidth | Less than 20 kHz |
| Transceiver transmit power | 1.6 W |
| Modulation | GFSK, m = 0.5 |
| Baud rate | 1000 bps |
| Protocol | CCSDS TM |
| Encoding | Reed Solomon (255,223) coding Convolutional: (7 1/2) coding |