ANSWERS TO CORRESPONDENTS

New Zealand Listener, Volume 31, Issue 798, 5 November 1954, Page 5

ANSWERS TO CORRESPONDENTS

Oamaru Listener, and Others: Full, details of the Test match coverage from Australia will be printed soon. C. R. Smith (Auckland): Thete*have been many other similar broadcasts, and there will be more: broadcasts, not lectures addressed to a visible audience. T.V. (Auckland): Your ideas are far from clear. A successful FM station would have to operate on VHF-i.e., around 100 millicycles. Its tange would therefore be strictly limited, and no long distance reception of such a station would be possible. Long-wave broadcasting stations do not operate in this part of the worid; and the frequencies involved ate already in use for other radio services. | W. R. Mummery (Palmerstonm’North): Your observations ate fully in accord with the facts of radio propagation. The signal from a broadcasting station is radiated in two general ways. One is the "ground" wave, which decreases in strength with increasing distance from the transmitter. The other is the "sky" wave, which is effective only at greater distances from the station; i.e., more than, say, 40 to 100 miles, depending on frequency. At distances where these two waves are of similar strength, fading will be experienced. The power of the station has nothing to: do with this. Fading depends on the frequency of the signal, the nature of the ground (or sea) ovet whith, the signal has passed, and the time of the day or night. Music Lover (Gisborne): It was his management’s decison, widely advertised. e others you mention were under NZBS '‘contfact. Theresa Oldham (Gisborne): Will be investigated. adh i ‘ D. Harden (Auckland): The synchronisation of several transmitters on a single frequency is practised overseas, particularly in Europe, where conditions are very different from those in New Zealand. Generally speaking, working the YC stations on a single frequency would not affect their service areas. Also operation in this €nanner would requirte élaborate and very expensive facilities which could not be justified’ for any-small change iff"YC"G6verage.