hobart conversazione 1904 a scientific conversazione was held in hobart in september 1904. displays included wireless telegraphy equipment under the charge of w. p. hallam. the mercury of 19 september reported: "the committee room will be in charge of messrs. robert henry, w. p. hallam, and mr. todd. this room will be fitted up with electrical appliances, including the wireless telegraphy, which will be explained and at work during each evening." a later report makes it clear that the wireless telegraphy equipment was operated by w. p. hallam, frederick william medhurst and c. hamilton. it was also later revealed that the equipment displayed was the same as that utilised for the royal vistit to hobart in 1901. w. p. hallam was subsequently granted a wireless experimenter's licence and appears in the 1914 wiv list with callsign xzh. medhurst also appears in that list with callsign xzd, after ww2 he was licensed as 7ah. medhurst was never required to pass an aocp examination, no doubt due to his employment and involvement in the field.