JOTTINGS

Shannon News, 13 January 1928, Page 4

JOTTINGS

Broadcasting on 482 metres has been inaugurated in Salvador. /& wireless installation has beeii presented to the Winter Street Hospital, Sheftiold. The Brazilian import duty on dry eells for wireless purposes has been reduced to 15 per cent, ad valorem. Three loud speakers for broadcast* ing the departure and arrival of trains have been installed in Tork station.

Radio apparatus -was .;■ featured at the Sample Fair, Prague,: held from ♦ September 18 to 25. Qver.; eighty ' foreign and home firms exhibitea. Pei'haps the youngest announcer of any station ia Dorothy Maddick, who " is eight years old, and who talcos charge of the Victorian. .amateuT statiqp...3EF on. Sunday afternoons. Many fans note that -upon turning the variable condensers to a certain setting, loud eracklig noises are heard. The set also becomes totallyunstable, ..rheostat and plate voltage H adjustments failing to help. TheH trouble usually lies, in the cbndeua-.H er plates, which are touching at that H point either directly or via some particles which contain metal andM have accumulated on ' the plates.H "Whatever the case may be, either aH small ;l|-volt dry cell or 4§-volt CH battery .and pair of; phones or phoneH •■will aid you in running ~ it' downM Simply connect one ? terminal of bai-H tery in series with the phone. leaves you two terminals. Tkaaß disconnect one terminal of tnv coaflS denser from the rest of 'the cireuiiH| and bring ou "the. two testing leadJp A click - will show that .there f U JH Swinging signals are not alwayfflM due to the -aerial. Sometimes OR ground conneett-o'n maybe at faßljWl TMs is, one spot that 4s ovcrlooke«M and. one that should begiven tuH "once over" periodically. Due <HH the galvanic action due to dissim'daH metals, the^round• connection seldoflßJ remains clean, and a 'dirty connectujaflH means less volume" from distant stIHH tions. Most any old thing will do |HH local and nearby reception, "but it HH all the little -points that make dHB tant results .possible. j^H