"@AndrewZ: Encryption is per-packet. So one bit error will affect the whole packet. But there are many packets per second, so in practice it equals a larger number of "normal" errors which the h.264 decoder handles fairly well."
"Thanks. Interesting about the image degradation... I wonder how that works mathematically since a single bit error in the ciphertext is supposed to, on average, affect 50% of the decrypted plaintext, for a good cipher."
"Also by the way will the image quality also degrade in a similar way with encryption enabled? Or will transmission errors cause a total loss of the frame or blocks of the frame, as could be expected?"
"Some total end-to-end latency figure (glass to glass I think the call it) incl. rapivid and your choice of a display device would be good to have when you get around to benchmarking it. Thanks! Look promissing."
"@JeanLeFlambeur: Sure. You are right about the specs. And yes, -88dBm is usable. Its just that the SiLabs software has this limit, combined with the fact that we never managed to push it much beyond 500 kbit.
"@FernRF Actually the datasheet says the max is 500k symbols per second. With 4FSK a symbol is 2 bits so a max rate of 1Mbps. This is well within the specs.
The RX sensitivity @1Mbps is -88dBm which is very usable.
Regarding the fifo, I was…"
"@FernRF: Its true that the data sheet says 1 mbit. And the hardware might even support it. But SiLabs configuration software only allows initialization up to 500 kbit. I suspect that the receive sensivity gets so low that it isn't worth it. But…"
"@FernRF: thanks a lot for the hint PA. I will definitely check out your code. It might be what you mention, maybe I got the wrong frequency modules or I had the wrong configuration - even though I doubt it, I was measuring with a SDR and spot on 433…"
"@JeanLeFlambeur: Come to think of it, your problems might related to some challenges we had earlier on. It is possible to run the si4463 chip outside the specified module PA freq range. In that case its only the si4463 chip inside which transmits.…"
"@JeanLeFlambeur: Sorry to hear that. We haven't seen that issue. Current products are made with version 2.1. Only issue have been some early problems with the 915 mhz variant. But these were caught by our QC. We buy the modules directly from…"
"@FernRF - do you happen to know what version they are?
I tried to get 2 of them to work for 3 months without success. They got unstable at higher power levels (>50mW) and the power rail got a lot of noise. My guess is that the power amplifier…"