The same, except you say you are using RFO and not BOOST, which on that HopeRF module is not physically connected to the matching components and antenna.
Explains why it only works at 0.5m.
edit:
For some extra detail, the PA connected to the ‘PA_BOOST’ pin can operate in 2-17dBm mode or fixed 20dBm.
The RFO PA is not connected to the ‘PA_BOOST’ pin.