I am trying to understand if it's feasible to transmit -1,0,+1 data using FM on 20-30m wavelength to be received 10,000km away. From Europe to US.
Ultimately I would like to create a solution which is sensitive to wave slope. I know it is possible as I read GPS time signal works this way. Hence I can transmit trinary signal not binary
- What SNR should I expect?
- What kind of power on TX side?
"Desired performance" here is (if the trinary data achievable as above):
- latency is 4ms
- data rate 2 tribit per second
- as its not commercial i'd rather calibrate optimal missing reception etc per session (dependent on weather etc), so 20-80%..
Also note: I looked into known ham radio digital modes and signal processing algorithms - they seems to be too slow as they are designed to use minimal power for reasonable detection rates with pretty much infinite latency. My task is the other way around - to use maximal reasonable power to achieve low latency.