For communication, I've found that CONTESTIA 4/250 has a very good resilience -vs- speed and bandwidth. For communication, you rarely if even need the full ASCII set. Using only uppercase, nimbers and most punctuation, CONTESTIA has a shorter data set (bits per letter) and so sends fewer bits for the same letters. It uses a STRONG FEC like OLIVIA and works well into the noise. Unlike the 2-way beacon modes, which at first seem great for prepping, there is no timebase needed. Most of the 'low power' beacon modes use internet clocks or GPS slaving - both of which are questionable in a SHTF situation. I did a full evaluation and the time synch is a major problem - after all, if we HAVE the internet, we'd use the internet.
My 0.02 Euros worth - please adjust for currency devaluation, Brexit & etc.
de RadioRay ..._ ._
Ps. Remember, for digital QRP, include the COMPUTER power drain in the power budget calculations. Morse uses no computer, other than the brain.
My 0.02 Euros worth - please adjust for currency devaluation, Brexit & etc.
de RadioRay ..._ ._
Ps. Remember, for digital QRP, include the COMPUTER power drain in the power budget calculations. Morse uses no computer, other than the brain.