Wellington Society

Radio Record, Volume III, Issue 41, 24 April 1930, Page 21

Wellington Society

Power Interferencee THE monthly meeting of the Amateur Radio Society of Wellington was held in the Cambridge Terrace Congregational schoolroom on Tuesday evening, April 8. Mr. Byron Brown, president, occupied the chair, and there were about 40 members present. The hon. secretary, Mr. A. G. H. Laws, reported that in accordance with a motion passed at the previous Ineeting he had written to the P. and T. Department concerning the complaint of a member of the society regarding serious interference from some electrical source near Daniell Street, Newtown. The following reply was received from the District Radio Inspector: "I have to inform you tnat the complaint was made the subject of investigation during November last. It was then found that the interference was due to proximity to the tramway system, and not to any power leakage from overhead electric lines.

"Inquiries made from the city corporation tramways department elicited the information that work on the lines in that area was in progress, and improvement might be effected on completion. . "The matter is one which is receiving attention." The member of the society’ who complained of the interference stated that although there was now no work on the ‘ tramway lines now in progress in that: vicinity the trouble was still frequent at nights. The interference was continuous. It was decided to forward a copy of the District Radio Inspector’s letter to Mr. M. Cable, of the tramways department. A serious type of interference due to a tramway switch signal in the Thorndon area, reported at the previous meeting of the society, the hon. seeretary stated, had been the subject of a letter to the tramways department. The following letter was received from the assistant general manager of the tramway department: "In reply to your letter of February 12, I beg to inform you that the copper banding of the tram rails in the locality complained of has been tested and found to be perfect. As the duplication of the tramway track in Park Street and Grant Road as far as Newman Terrace will be linked up early next week, signals on that section will then be removed and if this has been causing radio interference, it should then disappear." A member reported that considerable interference with broadcast listening had been experienced through Morse being transmitted during broadcasting hours. This was endorsed by others. The following motion was carried :-"That the Navy Office be written to complaining of interference to broadcast listening by the warships in port at Wellington during broadcasting hours." Shortwave Receiver. "PHE remainder of the evening was devoted to a lecture on "Shortwave Receiving Sets," by Mr. L. H. Wright, who by means of blackboard diagrams gave an interesting explanation of the various shortwave circuits. ‘ Mr. Wright also explained the circuit . for a simple shortwave adapter for use with an ordinary a.c. broadcast receiving set. Several questions were asked and answered, and at the conclusion Mr. Wright was accorded an : enthusiastic vote of thanks.