Thank you so much for all your help, after some tinkering, I finally got it fully working using the Nano's 3v3 output, I can't thank you enough for that suggestion. One final question, when I wire the NRF's up using an external voltage regulator it doesn't seem to work, even though I know the output is 3.3v, is there a special way of wiring it when using an external power source? I say this as I want to use the high power modules, which I've been told won't work of the Nano.