Is my ARD not equal to 1000us when set to 3? 0=250us, 1=500us, 2=750us, and 3=1000us?
I am also in 250KBPS mode, but as you have shown me from the datasheet, 500us should be long enough for any ACK packet.
You configured the retry timeout too short.
You are correct. Once I changed the delay from 3 to 5 I get an acknowledgement.
I have noticed something strange about these NRF's though. For these tests I have been using the standard modules, but I have also bought the PA+LNA kind as well. When I switch in the transmitter NRF for an upgraded one, everything works fine as it should. When I switch out the receiver NRF for the upgraded one, it stops working unless I put the setting to 2MPBS or have it set to 250KBPS and touch the antenna with my finger.
What is going on here? Are their consequences to using the PA+LNA version of the module?