On Saturday 26th March 2011 at 10:30 UTC (during the CQ WW WPX Contest) Callum Graham (2M0YCG) in Scotland worked John ZL2JBR - located near Wellington in North West New Zeland, a distance of 18,426 kilometres.
He was using a Yaesu FT-817 with 5 Watts into a Cobwebb Antenna.
Watch - QRP DX:- Scotland to New Zealand on 5 Watts with my Yaesu FT-817 (18426.64 Kilometres).