This wouldn't be the first thing I've built with the ATmega128RFA1 or ATmega256RFR2, but now I really want to connect it to a 2W or 3W off-the-shelf WiFi booster. These boosters are bidirectional but rely on detecting the RF power in order to determine direction and operate the RF switches inside.
The preamble of all packets is 4 bytes long and cannot be changed. I do plan on using 250 kb/s. Datasheets says the preamble is going to take around 128 microseconds.
Is this enough preamble time to activate a typical $50 WiFi booster?