5196106154

SOLUTION FOR AUGUST

SEPTEMBER CROSSWORD

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ACROSS

I.    OTH radar system. (8)

5. Groups of three bits. (6)

10. Detecting data. (7)

II.    Unit of brightness. (7)

12.    Uncomfortable perceived • stimulus. (4)

13.    Well-known brand name in amateur radio eguipment. (5)

14. Source of multiband radiation. (4)

17.    Contrived gadget. (6)

18.    Best position for ship-to-ship communication! (5)

21. These are used in some ' relays. (5)

23. Outcome of battery? (6) 25. Part of old diodę detector,

the-whisker. (4)

27. Applied signal. (5)

„ 28. Scottish-born inventor of telephony. (4)

31.    Pre-metric absolute temperaturę scalę. (7)

32.    Private telephone connection. (3.4)

33.    Unit within a system. (6)

34.    Send a signal. (8)

DOWN

r 1. First name of famous scientist Henry. (6)

2.    Term describing function of certain amplifiers. etc. (3-6)

3.    An electrolyte. (4)

4.    Removal of metal in pattern formation. (7)

6.    These memories give equal entry times. (4)

7.    Warn. as with an alarm. (5)

8.    Apply maximum magnetisation, etc. (8)

9.    Type of amplifier with a very linear output. (5,1)

15.    Picture element. (5)

16.    Substance such as that with symbol Yb. (5)

19.    Property due to electron behaviour. (9)

20.    Rangę of wavelengths. (8)

22.    Transmitting device. (6)

23.    This seems a rather contrary adding device. (7)

24.    First name of physicist who first explained the photoelectric effect. (6)

25.    Adjusted to optimum. (5)

29.    Word of some prominence in the ABC’s high-level language! (4)

30.    Element used in lamps. (40)

"Electronics Australia" is one of the longest running technical publications in the world. We started as "Wireless Weekly" in August 1922 and became "Radio and Hobbies in Australia" in April 1939. The title was changed to "Radio, Television and Hobbies" in February 1955 and finally, to "Electronics Australia" in April 1965. Below we feature some items from past issues.

September 1937

Radio for motor cars: An increasing number of motor cars in Australia are being equippcd with broadcast receivers and the sight and sound of an automobile providing musie with transport is ceasing to be a novelty.

Communication system: A new inter-communication system, known as the "Handy-Phone", has been developed by the General Electric radio division in Bridgeport, Conn. Essentially a loud-speaker phone system, the new appara-tus is designed for use in offices, hospi-tals, Stores, homes or any similar place where speedy voice communication is desired.

Radiokes new factory: To cope with the present volume of business, and the generał growth expected in suceeding years, Radiokes have just completed ar-rangements for the erection of a new factory in Vine Street, Redfern. It is cx-pected the new building will be completed early in 1938.

September 1962

Television transmitter: (caption) Designed to operate in Canberra on chan-nel 3, this AWA television transmitter is the first Australian-made unit to be

supplied to the Austraiian Broadcasting Commission. The equipment consists of two 10kW vision and associated sound transmitters, giving an effective radiated power of 100 kW. ^

Sound into power: American scientists are now working on a device to make some use of the jet engine’s noise.

A prototypc set-up will soon test the feasibility of converting the jet’s whine into electricity. The device will use the ability of some crystals to give off electricity when they are compressed. The sound waves of the jet vibrate the crystals and start the current flowing.

Electronic oven: (caption) In this British "Artic" 2kW electronic oven, frozen pre-cooked food becomes a piping hot meal in just 45 seconds. The oven cavity is of aluminium, with a stainless Steel door, and measures 14in high, 17in wide and 15in deep. The manufacturer claims that there is no loss of moisture and no loss of flavour with electronic reheating.

127

ELECTRONICS Australia, September 1987