1.4 KiB
1.4 KiB
Amplitude-Shift Keying
| Attribute | Value |
|---|---|
| UHF Band Name | LPD433, SRD860 (ISM) |
| Carrier Freq. | 433 MHz, 868 MHz |
| Bandwidth LPD | 1.7 MHz (433.05 – 434.79) |
| Data Rate | 4 KHz, maybe more? |
General Notes
- Generic 433 MHz RX/TX chips with ASK.
- Transmitter is on if data pin is high. Receivers have automatic gain control. Will output random noise when there is no signal. Requires an error checking protocol.
- Use manchester encoding and training preamble for receiver and transmitter to sync up their clock phases.
- Encrypted serial connection over 433 MHz?
Planned Modules
- Frequency-shift keying (FSK)
- Phase-shift keying (PSK)
- Chirp spread spectrum (CSS)