PORTABLE TRANSMITTER ON THE YACHT "MARANGI." Experimental transmission was carried out by two amateur radio transmitters, Mr. S. Perkin (ZL2GK), and Mr. C. G. Liddell (ZL2B1), on the yacht "Marangi," owned by Mr. R. Mellor, of Wellington, which took part in the ocean yacht race to Port Underwood (across Cook Strait) and back. Although, on account of unfavourable weather, the race was abandoned on the Saturday evening, the small combined portable receiver and transmitter, as shown, acquitted itself well, being heard at good strength in daylight at both New Plymouth and Auckland, working on 40 metres. Communication was maintained with the shore station ZL2B1, from whence progress reports were telephoned to 2YA and broadcast. The temporary call-sign allotted to the transmitter was ZL2DZ.

Radio Record, Volume III, Issue 34, 7 March 1930, Page 6

PORTABLE TRANSMITTER ON THE YACHT "MARANGI." Experimental transmission was carried out by two amateur radio transmitters, Mr. S. Perkin (ZL2GK), and Mr. C. G. Liddell (ZL2B1), on the yacht "Marangi," owned by Mr. R. Mellor, of Wellington, which took part in the ocean yacht race to Port Underwood (across Cook Strait) and back. Although, on account of unfavourable weather, the race was abandoned on the Saturday evening, the small combined portable receiver and transmitter, as shown, acquitted itself well, being heard at good strength in daylight at both New Plymouth and Auckland, working on 40 metres. Communication was maintained with the shore station ZL2B1, from whence progress reports were telephoned to 2YA and broadcast. The temporary call-sign allotted to the transmitter was ZL2DZ.