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Publisher & Editor-in-Chief Leo Simpson, B.Bus. Editor Greg Swain, B.Sc.(Hons.) Technical Staff John Clarke , B.E.(Elec.) Robert Flynn Advertising Manager Paul Buchtmann (02) 979 5644 Mobile: 018 28 5532 Victorian Representative McDonald Woodside & Associates Pty Ltd , 143a Como Parade East, Parkdale, Victoria 3194. Phone (03) 587 5155. Contact: Cameron McDonald. Regular Contributors Jennifer Bonnitcha, B.A. Garry Crall, VK2YBX John Hill Jim Lawler, MTETIA Bryan Maher, M.E., B.Sc . Jim Yalden, VK2YGY Darren Yates Bob Young Photography Bob Donaldson Editorial Advisory Panel Philip Watson, MIREE, VK2ZPW Norman Marks Steve Payor, B.Sc., B.E. SILICON CHIP is published 1 2 times a year by Silicon Chip Publications Pty Ltd. All material copyright (c). No part of the contents of this publication may be reproduced without prior written consent of the publisher. Typesetting: Magazine Printers Ply Ltd, Rozelle, NSW 2039. Printing: Macquarie Print, Dubbo , NSW 2830. Distribution: Network Distribution Company. Subscription rates: $42 per year in Australia. For overseas rates, refer to the subscription page in this issue. Liability: Devices or circuits described in SILICON CHIP may be covered by patents. SILICON CHIP disclaims any liability for the infringement of such patents by the manufacturing or selling of any such equipment. Editorial & advertising offices: Unit 39, 5 Ponderosa Pde, Warriewood , NSW 2102. Postal address: PO Box 139, Collaroy Beach, NSW 2097 . Phone (02) 979 5644. Fax (02) 979 6503. ISSN 1030-2662 2 SILICON CHIP PUBLISHER'S LETTER The big move: a new stage in our development By the time you read this issue, we should be established in our new premises in Warriewood, a northern beachside suburb of Sydney. For the staff of SILICON CHIP, it marks a big step forward in the development of the magazine. Up till now, we have had very cramped quarters in the downstairs area of my home. In the limited space available we have carried out all of our activities, in editorial preparation, circuit design, drafting, library and record storage, advertising sales, accounting, subscriptions and mail order, and so on. All of these activities, which are part and parcel of a magazine publishing company, have been carried on inside a proverbial sardine can. It will be great to spread out. Why have we waited so long before moving into larger premises? Well, we've been cautious. The best way to survive and grow when you are starting a business is to keep close control over costs. But there is a limit to how long you can do this and after a while it can stunt the growth of any company, publishing or otherwise. With your considerable support, both from readers and advertisers, we have established SILICON CHIP as Australia's most dynamic electronics magazine. When we started SILICON CHIP, there were four locally produced monthly consumer electronics magazines and quite a few foreign imports. Now there are just two Australian electronics magazines and not so many imports. So the time has come for us to move. In the short term, it won't make any visible difference to SILICON CHIP. We will continue to improve it gradually as more resources become available to us. In the long term though, it will enable us to serve you, the readers, much better. With your support, we will continue to grow strongly. By the way, while our premises and phone numbers have changed (with more lines), our postal address will remain the same, so there will be no interruption to the mail. Keep those letters coming in. They help keep us attuned to what you want to read about in SILICON CHIP. Leo Simpson Our new address: Unit 39, 5 Ponderosa Pde, Warriewood, NSW 2102. Phone (02) 979 5644. Fax (02) 979 6503. Our postal address remains: PO Box 139, Collaroy Beach, NSW 2097.