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BROADCASTING.

New Wave Lengths

EFFECTIVE ON SUNDAY.

The changes in the wave lengths of the broadcasting stations of Australia, which were announced last February, will come into force on Sunday. About half the transmitters of Australia are affected by the re-allocation of channels, which, it is stated officially, has been made to allow for expansion of the services, and to provide a better distribution of wave lengths in districts where there are a

number of transmitters.

All the stations are still within the limits of the broadcasting band, which extends from 550 to 1500 kilocycles (200 metres to 545 metres). They will thus still be picked up between the two ends of the dial of a re- ceiver, but their relative positions within this band, and on the dials, have been altered, some having moved towards the lower end, and others towards the higher end. The changes will in no way affect the utility or efficiency of receivers beyond making it neces- sary to tune in the stations at other points on the dial, a factor which will render call sign markings, according to the old list, value- less and misleading. Dials marked with arbi- trary scales of numbers or with wave lengths of frequencies, or with the call signs in the new positions, will continue to be useful when the new settings for the stations are known.

With the exception of 2SM, all the Sydney stations will have their positions on the dial altered. The positions have been moved so that the intervals between them are larger, a condition which will enable old types of sets to be used with greater freedom from inter- station interference. 2FC will move farther up the dial to the point where 3AR is now received, about half-way between its present position and the upper end of the dial. 2BL will also move in the same direction and will be near the channel now used and to be used hy 5CL (Adelaide) and about half-way be- tween 2BL's old position and that at which 2FC is now picked up. 2GB will move up to not quite as far as 2BL'S present position. 2UE will take the place now occupied by 2GB, and 2KY will assume a position which is a little above that of 2UE to-day. 2UW will go to a point now used by 2HD (Newcastle) and about one-third of the way between its present position and the old position of 2KY, and 2CH will move up two channels. 2SM

will remain where it is.

Many stations outside Sydney and beyond New South Wales have had their relative posi- tions altered, with the result that they will appear in a different order upon the dials of receivers. Of the interstate National stations 7ZL (Hobart) will drop down one channel; 3AR (Melbourne) moves down two channels, nearly to 5CK (Crystal Brook), which only moves down a trifle; 6WF (Perth), 5CL (Ade- laide), and 4RK (Rockhampton) are un- altered; 3LO (Melbourne) and 4QG (Bris- bane) practically change places; and 7NT (Tasmania) Is unchanged.

IN COUNTRY DISTRICTS.

In the New South Wales country districts, 2CO (Corowa) will come down to nearly 2FC's present position, and 2NO (Newcastle) will go one and a half channels above Its present position. 2CA (Canberra), 2WG (Wagga), 2XN (Lismore), 2GN (Goulburn), 2WL (Wol- longong), 2KO (Newcastle), and 2AY (Al- bury) will be unaltered, or will only make minor alterations. Of the remainder, 2GF (Grafton) will move up one channel; 2HD (Newcastle) will move three channels; 2BH (Broken Hill) three channels away; 2MO (Gunnedah) four channels, and 2TM (Tam- worth) 19 channels.

In due course the following new stations will commerce transmitting in New South Wales: 20R (Cumnock), 550kc; 2NR (Graf- ton), 700kc; 2LV (inverell), 980kc; 2GZ (Orange), 990kc; 2AD (Armidale), 1080kc; 2KA (Katoomba), HGOkc; 2NZ (Narrabri), 1170kc; . 2QN (Deniliquin), 1440kc; 2BE (Bega), 1470kc; and another station in the southern districts on 1490kc. When these are In operation there will be 32 stations in the State, comprising six National, including four country regional units, and 20 commercial stations, of which 20 will be in country

districts.

It is impossible to give information as to where the various stations will appear on the dials of receivers after the change has been made, because dial recordings, unless they are shown In wave lengths or frequencies, depend upon the electrical characteristics of the apparatus. However, when the dial positions of some stations have been located, the points at which others will be received may be esti- mated by comparing their positions with those of known stations In the list of wave lengths and frequencies printed below. In case where dials are marked with scales of wave lengths or frequencies, the corresponding figures in the list may be used for tuning in the stations, FREQUENCY AND WAVE LENGTHS. The revised complete list of frequencies and wave lengths of all stations now operating and also those authorised to commence trans- missions is as follows:

Fre- Wave

quency, length Station.

k.c. m.

550 545 2CR Central N.S.W. National. 560 536 6WA South-west (W. Aust.).

National.

580 517 3WV West Victoria. National, 590 50B 7ZL Hobart. National.

600 500 4QN North Queensland. National. 610 492 2FC Sydney. National No. 1.

630 476 3AR Melbourne. National No. 1. 640 460 5CK Crystal Brook. National. 670 448 2CO Corowa. National. 630 435 0WF Perth. National.

700 429 2NR Northern Rivers, N.S.W. Na-

tional.

720 417 6QP Kalgoorlie, W.A. National. 730 411 5CL Adelaide. National.

740 405 2BL Sydney. National No. 2.

750 400 7NT North Tasmania. National. 770 390 3LO Melbourne. National No. 2. 800 375 1QO Brisbane. National. 820 366 7HO Hobart.

830 361 3GI Gippsland. National. B50 353 5RM Renmark. 870 345 2GB Sydney. 880 341 6PR Perth.

900 333 3MA Mildura.

900 333 4WK Warwick.

910 330 4RK Rockhampton. National.

930 323 3UZ Melbourne. 950 316 2ÜE Sydney.

960 313 5DN Adelaide. 970 309 3BO Bendigo. 980 306 2LV Inverell. 980 306 4AY Ayr.

980 306 6AM Northam. 900 303 2GZ Orange.

1000 300 4GR Toowoomba. 1010 297 3HA Hamilton. 1020 294 2KY Sydney.

1030 201 3DB Melbourne.

1040 288 5PI Crystal Brook. 1050 286 2CA Canberra.

1060 283 3YB Mobile Station (Victoria). 1060 283 4MB Maryborough. 1080 278 3SH Swan Hill. 1080 278 2AD Armidale.

1100 273 7LA Launceston. 1110 270 2UW Sydney.

1120 268 4BC Brisbane. 1130 265 6 ML Perth.

1140 263 2HD Newcastle. 1150 261 2WG Wagga.

1160 259 2KA Katoomba. 1160 259 4MK Mackay. 1160 259 6BY Bunbury. 1170 256 2NZ Narrabri.

1170 256 4TO Townsville. 1180 254 3KZ Melbourne. 1190 252 2CH Sydney.

1200 250 5KA Adelaide. 1210 248 2GP Grafton.

1210 248 6KG Kalgoorlie. 1220 246 4AK Oakey.

1230 244 2NC Newcastle. National. 1240 242 3TR Sale. 1240 242 6IX Perth.

1260 233 3WR Shepparton. 1270 236 2SM Sydney.

1280 234 3AW Melbourne. 1290 233 4BK Brisbane.

1300 231 2TM Tamworth. 1310 229 5AD Adelaide. 1320 227 3BA Ballarat.

1330 226 2BH Broken Hill.

1330 226 4RO Rockhampton. 1340 224 2XN Lismore. 1350 222 3GL Geelong.

1360 221 2MO Gunnedah.

1360 221 4PM Port Moresby. 1370 219 3HS Horsham. 1380 217 4BH Brisbane.

1390 218 2GN Goulburn. 1300 216 7BÜ Burnie.

1410 213 2KO Newcastle. 1420 211 3XY Melbourne.

1430 210 2WL Wollongong. 1440 208 2QN Deniliquin. 1440 208 4IP Ipswich.

1450 207 5MU Murray Bridge. 1460 205 7UV Ulverstone. 1470 204 2BE Bega.

1470 204 4CA Cairns. 1480 203 2AY Albury.

1490 Ml 2- South N.S.W. 1300 20U 7- Hobart.

1500 200 3AK Melbourne (night service).

POSTAL DIRECTOR'S EXPLANATION.

The Director-General of Posts and Tele- graphs (Mr. H. P. Brown), In an address broadcast through a network of 66 stations throughout Australia last night, said that the change of wave lengths was the result of many months of intensive study. The primary ob- ject was to guarantee a service of high quality by each station in its respective area. Many thousands of listeners would benefit immedi- ately by the change, and would have less diffi- culty in selecting stations. They would be able to receive with greater facility and clarity It was inevitable that some listeners would find cause for dissatisfaction-probably be- cause they would seek to listen to distant stations instead of the nearer stations pro- vided to give them service._

Digitisation generously supported by
Vincent Fairfax Family Foundation
Digitisation generously supported by

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