If you bought it for the right band why wouldn¡¯t it work?
I run a QCX full time as a WSPR beacon. ? Worth keeping the supply voltage down to 9V or so for a better safety margin on PA temperatures and in any SWR accidents unless you really need max power
A nearby lightning storm damaged that ?QCX at one point but replacing the RX multiplexer chip and 5351 got it going again?
Bruce Akhurst