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Radio Record, Volume I, Issue 9, 16 September 1927, Page 12

Broadcast station 7Z1,, Wobart, is overloaded with ‘carrier wavye."? When its trainers clear its throat it will be worthy of battery current nearly every night. A "tip" all broadcast listeners should heed is the desirability of experimenting with the B battery voltage of their detector valyes to ascertain which gives the best results. It makes a whale of a difference to apply the correct high-tension voltage on the detector plate, especially for across-the-sea reception in New Zealand.