RADIO AND ITS RECEIVERS

Sun (Auckland), Volume IV, Issue 977, 21 May 1930, Page 6

RADIO AND ITS RECEIVERS

Conducted for THE SUN by R." F. HAYCOCK.

IZB TESTS “MIKES” The local station, IZB, owned aud operated by La Gloria Gramophones. Ltd., was on the air on Monday evening with a good selection of items. Evidently improvements have been effected in the mechanical department, as transmission was much better than formerly. Interesting tests were conducted during the evening, which showed that the management, in its efforts to provide good entertainment, is willing to co-operate with listeners. Four microphones were used, numbered from one to four, and after the announcer had spoken through each, listeners were asked to say by telephone which microphone was the best. In this way the station gained first-hand knowledge of how the transmission was being received, and the data acquired should be very valuable.

Whether it was the microphone or other improvements, the fact remains there was entire absence of rasping about the announcer's voice, which has been rather noticeable in the past. Tests of a similar nature might be conducted by the “YA” stations with benefit to the broadcasting company, and also to listeners. WHEN ACID IS SPILLED Sometimes acid from an accumulator will be spilled on the drawingroom carpet. Acid, like other nasty things, leaves no mark at the time. In a few days, however, either the carpet will have turned a most remarkable yellow or pink at this spot or there will be no carpet there at all. It is just as well to act quickly. Quick action has saved more drawing-room carpets from disaster than might be realised. The best thing to do is to cover the spot with soda dissolved in water. The general idea is to neutralise the baneful effects of the acid with an alkali. Ammonia will do if soda is not handy, while at the worst rinse out the place with plenty of water. It is just as well to have some soda handy, because accumulator acid, even on clothes, if neglected, has an effect worse even than moths.

CAN YOU DO THIS? The list shown below is the reco-j of stations heard during the four recently, by a listener a favourable position in naki, and is published for Benefit of those Auckland who take plasure in “logging**!? many stations as possible. The toS number listed is 61 stations, a difficult tally to equal in a city whe? there is much electrical Still, there is nothing like trying These stations all transmit o* tL ordinary “broadcasting” wave-htai * 1 2 3 & 4TA. N.Z. 4ZO Dunedin 2FC Svdney 4ZM Dunedin 2BL Sydney KFWB 2GB Sydney WLW CinchS?* 2UE Sydney KTM Santa vSL 2KY Sydney California 2UW Sydney KXX Hollywood 3UZ Melbourne WTIC Dallas tv*2ZQ Mastertor. KGO Oakland 2ZF Palmerston X. WFXR Chica*» IZQ Auckland KGB San Die** 2YB New Plymouth KGW Portland 3AR Melbourne KOL Seattle 3LO Melbourne KFWM Oaklajai SOB Melbourne KYA San FVanw^-. 3ZC Christchurch KHJ Los AnwJ* 2ZM Gisborne KFOX Long Bi* JOHK Japan KFRC SanFraicij^ JOAK Japan KYW ChicMo JOIK Japan WTAM Cleveland JOCK Japan KSTP St. Paul (Mb JOBK Japan nesota) 4ZL Dunedin KOB. State Cww. 7ZL Hobart Works, MctW* 4QG Brisbane WHAS Louisville IZB Auckland (Kentucky) 2 HD Newcastle WCCO MinneoM. 6WP Perth (Minnesota) SCL Adelaide WBAP Fort Wwt. r»DN Parkside (S.A.) (Texas) 2ZH Napier WJR Detroit ntwy 4ZP Invercargill gan) 2ZO Masterton