DECEMBER 1976 35p

146 Pages·2015·12.51 MB·English

Australia SA1.20
Canada $1.50
Denmark Kr. 11.00
Finland Fmk. 6.20
Germany Dm. 4.50
Greece Dr, 45.00
Holland Df I. 4,50
Italy L. 900
Malaysia ME3.25
New Zealand ENS1. 40
Norway Kr. 10.00 incl. moms
Portugal Esc. 40.00
South Africa R. 1.10
Spain Ptas 80.00
Sweden Kr. 6.90 Incl. moms
U.S.A. E1.50
DECEMBER 1976 35p
Wireless World, December 1976
now
Until
bought only
£1995
half the synthesized
Signal Generator
you wanted.
modulstçyn output
frequency MHz
o<dput `¢
SYNTHESIZED 9001
SIGNAL GENERATOR ,77J.j]Q
RACAL INSTRUMENTS' 9081.
5 to 520 MHz AM, FM and Phase Modulation
Synthesized Performance -Analogue Tuning Output automatically levelled
Channelised or continuous operation £1995
Stability ±3 parts in 10° per day Write today for a copy of our Technical Brochure
0
Racal Instruments Limited,
The Electronics Group Duke Street,Windsor, Berkshire, SL41SB Telephone:.Windsor 69811 Telex: 847013
WW -001 FOR FURTHER DETAILS
Wireless World, December 1976
Even if we didn't make it,
well make it work.
Bradley Services have the expertise and after-sales engineering support, from the Bradley Electronics
manufacturing capability necessary to provision of technical literature to the
make the most sophisticated electronic upgrading of complete systems.
systems and electro-mechanical devices. These facilities all approved to MOD G Er E Bradley Limited
However, equally important are the Def. Stan. 05-21, have been developed Electral House, Neasden Lane
facilities we have for repair and over more than 20 years and during that London NW101RR
calibration. We can handle virtually any time we've handled practically every Telephone : [phone]
type of instrument within the frequency type of instrument in use. So, if you've Telex : 25583
range DC to 36 G Hz - irrespective of got a problem with some equipment, the
manufacturer. chances are that, even if we didn't make
We also have a Post Design Services it, we can still make it work.
Group which provides every type of
-
WVV 097 FOR FURTHER DETAILS
Wireless World, December 1976
TRANSI
PACK®
NO BREAK POWER
SUPPLIES
-
NEW 2000 SERIES FOURTH
GENERATION
KVA TO 200KVA
1
24 HOURS WORLDWIDE SERVICE
2 YEARS' GUARANTEE AVAILABLE
BRITISH MADE
VISIT US AT HASTINGS AND SEE OUR
STATIC INVERTER CENTRE
TYPICAL TRANSIPACK TYPICAL
NO -BREAK POWER SUPPLY TRANSIPACK U.P.S.
AS DELIVERED TO C. E. G. B. FOR COMPUTER
APPLICATIONS
INDUSTRIAL
Sales and Laboratories
STANLEY ROAD
INSTRUMEN TS BROMLEY BR2 9JF
KENT. ENGLAND
LIMITED Telephone: [phone]
Telegrams. TRANSIPACK, BROMLEY
Telex. 896071
Factory
TRANlIPACIe THEAKLEN DRIVE
PONSWOOD INDUSTRIAL ESTATE
HASTINGS, SUSSEX, ENGLAND
Telephone: Hastings 427344
-
WW 026 FOR FURTHER DETAILS
Wireless World, December 1976
RELIABLE
5W 1550 . V'C,I i.c
\,+5 -50 -60
-40
..._ n ..}..
i:
T n "ti9
`
120 BASIC RANGES
AC V, I & dB : 501V /500V fsd, 50pA/500mA fsd, -90dß/ +50dB mid scale. Acc. ±1 .5% fsd above 50011V & 500pA.
Response 3Hz/200kHz above 5001.V and 500nA. Input R = 100MS2 on volts.
DC V, I & NULL . 1In5p01u.t+ VR/ 5=0 01V0 0fsMdí,2 o1n5 0vpoAlt/s5.0 0m5 AN ufslld ,r apnogleasr ihtya vree vceernstibrele z. erAo clich. / +l1o g.5 %sc afsled caobvoevrein 5g0 0±N4V d &ec a5d0e0sp.A .
RESISTANCE : 0.252/10GQ in 7 ranges, polarity reversible. Low test voltage for solid state circuits.
LEAKAGE at 3V : Uses 3V source with current ranges to test capacitors, diodes and resistance up to 100GO.
VOLT DROP at 10mA : Uses 10mA source with voltage ranges to test diodes, LED's and resistance down to l Omit.
30 OPTIONAL RANGES
RF VOLTS : 0.5V/ 500V fsd, 10kHz/1GHz, using RF Probe. Price £20 + VAT.
HIGH VOLTS .5kV/ 50kV fsd, AC /DC, using HV Probe. Price £14 + VAT.
. 1
HIGH CURRENT : 1 .5A/ 50/A fsd, AC/ DC, using Current Shunt. Price £14+ VAT.
TEMPERATURE . -150 °C +500 °C fsd in 7 ranges using Temperature Probe. Price £36 + VAT.
The instrument operates from a 9 volt battery, life 1000 hrs., or, AC mains when optional Power Supply Unit is fitted.
Size is 240mm x 150mm x 80mm. Weight is 1.75 kg. Meter scale length is- l40mm. Leather case is available at £12 + VAT.
ELECTRONICS LTD.
MOXON STREET, BARNET, HERTS., ENGLAND, EN5 5SD.
TEL: [phone] 8686
-
WW 007 FOR FURTHER DETAILS
4 Wireless World, December 1976
is
once enough!
The snail moves slowly and steadily. Bad think!
The weight of the shell that the snail carries is
two to three tiaras the weight of its own body;
this is equivalent to a 175 pound Haan walking
steadily forward with a 4(X) pound weight
on his shoulders.
Such steady performance under hard use conditions
is also characteristic of Otari products.
Years of continuous service is common, MX- 5050 -8SD MK -11
and the response of professional users shows PuneriftoHrmigahn cSe Nc ormatpioa realbimlei ntaot e1s inncehe,d 8f ocr hanoninseel
how much they value this steady, precise reduction mechanizmDC direct drive servo
performance under hard use.
We don't have to claim our machines are sturdy-
the machines, and their satisfied users,
speak for themselves.
Trust through experience- one encounter
with OTARI equipment and from then on,
You will trust the OTARI name.
OTARI CORPORATION: 981 Industrial Road, San Carlos, California 94070, U.S.A. Phone: California 415-593-1648 Telex No. 259103764890 OTARICORP SCLS
OTARI ELECTRIC CO., LTD. 4-29.18, Minami Ogikubo, Suginami-k-u, Tokyo, 167 Japan Phone: [phone] Cable: OTARIDENKI TOKYO Telex: J26604 OTRDENKI
WW 022 FOR FURTHER DETAILS
Wireless W/orld, De)cember 1 976 5
Our Dome Tweeters have reached
the pinnacle of success...
KK 7 DOME TWEETER
The latest addition to the range. For use in
systems up to 40 watts RMS and available in both
4 and 8 ohm versons.
KK 8 DOME TWEETER KK IO DOME TWEETER
Two models are available, suitable for Similar to the KK 8 but with narrower
use with systems up to 50 watts or sound dispersion angle. Available in both
alternatively, 80 watts. 4 or 8 ohm models 50 watt and 80 watt versions, with
can be supplied. 4 or 8 ohms impedance.
Isophorí have been manufacturing loudspeaker For further information on these dome tweeters and
drive units for over 50 'years and regard their other loudspeaker drive units manufactured by
dstoomriees t.w Leoeutdesrsp eaas koenr em oaf nthufeaicr tubrigegrse sint scuocucnestrsi es IHsoAphYonD, EcNom LplAetBe OthRe AcTouOpoRn IEanSd LpIMostI TtoE D,
throughout the world now incorporate one of Hayden House, Churchfield Road,
the above dome tweeters in their system Chalfont St. Peter, Bucks, SL9 9EW.
designs. Tel: Gerrards Cross (02813) 88447
oJ ¢
0 0
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HAYDEN i 4T-
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4'b ¢
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¢ 44
5¢ qr1 e SI
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-
WW 058 FOR FURTHER DETAILS
6 Wireless World, December 1976
The Experimenter.
No soldering. Us Patent Design No2:45554.
No spoilt devices.
The Experimentor is
not so much a new No fuss.
breadboard, practically
a new way of life!, No fiddling.
Says Ronald J. Portugal
President, No wasted time.
(
Continental Specialities Corporation.) Now you can put circuits together as
quickly as you think them up.
Just plug your devices in, pull them out,
plug them in again, as many times as you want.
Two Versions.
Experimentor 600. Experimentor 300. Apart from ICs, both versions take TO -5 transistors,
The world's first breadboard This one is designed to be diodes, LEDs, capacitors, resistors; any component with lead
specially designed for 0.6 pitch ideal for 0.3 pitch DILs, any kind, size between .015 and .032 inch diameter. And for inter-
devices. It gives you all the from 6 pins up. Excellent fan -otit. connections you use standard solid hook -up wire.
fan -out you need for complex (You can also use it for 0.6
Unique Construction.
MSIs, Micro- processors, devices, though for these the
Memories, Displays etc., (40 pins 600 version is recommended.) Each version of the Experimentor gives you 94 five -
or more) with plenty of room for contact terminals, arranged in two rows of 47, plus two integral
other components alongside. bus - strips for Ground and Power, with 40 contacts on each.
That's 550 contacts in all! (See diagram).
All terminal strips are recessed into the bottom of the
plastic body, and covered with a stick -on vinyl backing, so you
have no insulation problems.
The contact rows are numbered 1 -5 -10 etc. and A- B -C - - -J
lengthways, so each position is clearly defined. The bus -strips
are labelled X -Y, each end.
The plastic body is rigid, strong and longlasting, with a
recessed screw -hole at each corner, and all four edges have
a special quick -locking lip so that you can build rigid arrays of
two or more boards.
The Domino Theory.
See how the Experimentor boards fix together, side by
side, end to end, or at right- angles, to give unlimited scope for
circuit building, planning, extending, rearranging.
You can mix 0.3 and 0.6 DILs in any arrangement
you like.
And all your displays can face the way you want them.
And look at these prices!
Experimentor 300, £6.85, Experimentor 600, £7.50.
All made to top CSC professional quality, and every one is fully
TOP BOTTOM checked before dispatch.
Free Catalogue!
Page after page of fascinating CSC products. Just write
and ask.
Easy to Buy. Name
II
There's no problem buying from USA. Address
Just send name; address (block letters please), quantity of
each required, and a perfectly normal UK bank cheque, made
out in Pounds Sterling, to Continental Specialities Corporation.
Or you can use an International Money Order, from any Please send me (qty). Experimentor 300 @ £6.85 each,
Post Office. We also accept your American Express Card or and (qty). Experimentor600 @ £7.50.
Access number. 1 enclose cheque/imo for £ (total).
Amex /Access No J
Then we post by return airmail, and you shou=ld rece0ive 1=
the goods within 2 -3 weeks.
Dealer enquiries invited. Note that any UK taxes or duties
chargeable are solely the responsibility of the buyer.
Continental Specialities Corporation. 44 Kendall St.. PO Box 1942, New Haven, Conn. 06509 USA. Telephone:[phone].
WW -039 FOR FURTHER DETAILS
Wireless World, December 1976 7
a
Once upon time
made the
Britain
best industrial
cathode ray tubes in
the world.
Surprise.
They do
still
Engineers looking for quality industrial cathode ray
tubes look to Brimar. Our tubes are made to the highest
quality, standard with a personalised sales and
technical advice service to match. Our range
extends from 1 -inch instrument to 24 -inch
data display /monitor tubes and includes
double gun tubes, radar tubes and flying spot scanners.
Our catalogue is over 1 inch thick - ask for it.*
Thorn Radio Valves & Tubes Limited,
Mollison Avenue, Brimsdown, Enfield, Middlesex, EN3 7N S.
Telephone [phone].
:
*Price £2. FREE to bona fide trade enquirers_
WW-012 FOR FURTHER DETAILS
8 Wireless World, December 1976
66
Where can get a universal Bridge
I
that's good enough forthe Iabs,simple
to use and tough enough for the shop
floor fortune?,,
and doesn't cost a
diroommismomor
"Here AVO's Universal Bridge B150 Mk. 3 gives you
measurement of resistance, capacitance, inductance
accurate to 1 %, can be used anywhere, it's battery powered.
And anyone can use it, connections are simple and readings
easy to take -with no calculations thanks to the mechanical
irr -line digital display and interlocking units selector.
The B150Mk. 3 -for use in production, quality control,
development labs -even at goods inwards. Tough metal
cabinet, and the AVO guarantee of reliability, serviceability
and accuracy, all at a price that's a pleasant surprise. From
good distributors everywhere.
Ring us for the name of your nearest stockist or for
fuller details of AVO's Universal Bridge B150 Mk. 3.
Avo Limited, Archcliffe Road,
Dover, Kent. CT17 9EN.
Tel: [phone] Telex: 96283.
1
Thorn Measurement Control and Automation Division
WW -040 FOR FURTHER DETAILS
(--A
completely flexible personal mobile
which meets todays need for high
power person to person communication
Nolton
Personal Mobile
COST EFFECTIVE COMMUNICATION
FOR YOUR USE IN THE FIELD...
on the shoulder... in the hand...
on the motorway... in the office...
in the car...
Please send details of the Nolton Sabre Personal Mobile
Name__
Address
__
Nolton Communication/ ltd ;
. .
Radiotelephone Division Fieldings Road Cheshunt Hertfordshire EN89TX
Telephone Waltham Cross 33555 Telex 28952
WW-011 FOR FURTHER DETAILS