Silicon ChipThe North Head UHF translator: much ado about nothing - June 1991 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: The North Head UHF translator: much ado about nothing
  4. Feature: Electric Vehicle Transmission Options by Gerry Nolan
  5. Feature: Tuning Into Satellite TV by Garry Cratt
  6. Project: A Corner Reflector Antenna For UHF TV by Bob Flynn & Leo Simpson
  7. Project: Four-Channel Lighting Desk, Pt.1 by John Clarke & Leo Simpson
  8. Serviceman's Log: Whistles aren't always carefree by The TV Serviceman
  9. Project: Howl Suppression For PA Systems by Darren Yates
  10. Project: 13.5V 25A Power Supply For Transceivers, Pt.2 by John Clarke & Leo Simpson
  11. Feature: Computer Bits by Jennifer Bonnitcha
  12. Vintage Radio: Restoring a 4-valve Howard receiver by John Hill
  13. Feature: Amateur Radio by Garry Cratt, VK2YBX
  14. Back Issues
  15. Order Form
  16. Market Centre
  17. Advertising Index
  18. Outer Back Cover

This is only a preview of the June 1991 issue of Silicon Chip.

You can view 41 of the 96 pages in the full issue, including the advertisments.

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Articles in this series:
  • Electric Vehicles: The State Of The Art (January 1991)
  • Electric Vehicles; Pt.2 (February 1991)
  • Electric Vehicles; Pt.3 (March 1991)
  • The World Solar Challenge (April 1991)
  • Motors For Electric Vehicles (May 1991)
  • Electric Vehicle Transmission Options (June 1991)
Articles in this series:
  • Tuning Into Satellite TV (June 1991)
  • Tuning In To Satellite TV; Pt.2 (July 1991)
  • Tuning In To Satellite TV; Pt.3 (August 1991)
Items relevant to "Four-Channel Lighting Desk, Pt.1":
  • Silicon Chip article scan, June 1991 - 4-Channel Lighting Desk Pt.1 (AUD $10.00)
  • Silicon Chip article scan, July 1991 - 4-Channel Lighting Desk Pt.2 (AUD $10.00)
  • Silicon Chip article scan, June 1991 - 4-Channel Lighting Desk Pt.1 (AUD $10.00)
Articles in this series:
  • Four-Channel Lighting Desk, Pt.1 (June 1991)
  • Four-Channel Lighting Desk, Pt.2 (July 1991)
Items relevant to "13.5V 25A Power Supply For Transceivers, Pt.2":
  • Silicon Chip article scan, June 1991 - 13.5V 25A Power Supply For Amateur Transceivers Pt.2 (AUD $10.00)
  • Silicon Chip article scan, May 1991 - 13.5V 25A Power Supply For Amateur Transceivers Pt.1 (AUD $10.00)
  • Silicon Chip article scan, June 1991 - 13.5V 25A Power Supply For Amateur Transceivers Pt.2 (AUD $10.00)
Articles in this series:
  • Computer Bits (July 1989)
  • Computer Bits (August 1989)
  • Computer Bits (September 1989)
  • Computer Bits (October 1989)
  • Computer Bits (November 1989)
  • Computer Bits (January 1990)
  • Computer Bits (April 1990)
  • Computer Bits (October 1990)
  • Computer Bits (November 1990)
  • Computer Bits (December 1990)
  • Computer Bits (January 1991)
  • Computer Bits (February 1991)
  • Computer Bits (March 1991)
  • Computer Bits (April 1991)
  • Computer Bits (May 1991)
  • Computer Bits (June 1991)
  • Computer Bits (July 1991)
  • Computer Bits (August 1991)
  • Computer Bits (September 1991)
  • Computer Bits (October 1991)
  • Computer Bits (November 1991)
  • Computer Bits (December 1991)
  • Computer Bits (January 1992)
  • Computer Bits (February 1992)
  • Computer Bits (March 1992)
  • Computer Bits (May 1992)
  • Computer Bits (June 1992)
  • Computer Bits (July 1992)
  • Computer Bits (September 1992)
  • Computer Bits (October 1992)
  • Computer Bits (November 1992)
  • Computer Bits (December 1992)
  • Computer Bits (February 1993)
  • Computer Bits (April 1993)
  • Computer Bits (May 1993)
  • Computer Bits (June 1993)
  • Computer Bits (October 1993)
  • Computer Bits (March 1994)
  • Computer Bits (May 1994)
  • Computer Bits (June 1994)
  • Computer Bits (July 1994)
  • Computer Bits (October 1994)
  • Computer Bits (November 1994)
  • Computer Bits (December 1994)
  • Computer Bits (January 1995)
  • Computer Bits (February 1995)
  • Computer Bits (March 1995)
  • Computer Bits (April 1995)
  • CMOS Memory Settings - What To Do When The Battery Goes Flat (May 1995)
  • Computer Bits (July 1995)
  • Computer Bits (September 1995)
  • Computer Bits: Connecting To The Internet With WIndows 95 (October 1995)
  • Computer Bits (December 1995)
  • Computer Bits (January 1996)
  • Computer Bits (February 1996)
  • Computer Bits (March 1996)
  • Computer Bits (May 1996)
  • Computer Bits (June 1996)
  • Computer Bits (July 1996)
  • Computer Bits (August 1996)
  • Computer Bits (January 1997)
  • Computer Bits (April 1997)
  • Windows 95: The Hardware That's Required (May 1997)
  • Turning Up Your Hard Disc Drive (June 1997)
  • Computer Bits (July 1997)
  • Computer Bits: The Ins & Outs Of Sound Cards (August 1997)
  • Computer Bits (September 1997)
  • Computer Bits (October 1997)
  • Computer Bits (November 1997)
  • Computer Bits (April 1998)
  • Computer Bits (June 1998)
  • Computer Bits (July 1998)
  • Computer Bits (November 1998)
  • Computer Bits (December 1998)
  • Control Your World Using Linux (July 2011)
Articles in this series:
  • All about regenerative receivers (May 1991)
  • Restoring a 4-valve Howard receiver (June 1991)
Articles in this series:
  • Amateur Radio (November 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (February 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (January 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (February 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (July 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (January 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (January 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (January 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (February 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (January 1995)
  • CB Radio Can Now Transmit Data (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • Stressless Wireless (October 2004)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Dorji 433MHz Wireless Data Modules (January 2012)
Publisher & Editor-in-Chief PUBLISHER'S LETTER Leo Simpson, B.Bus. Editor Greg Swain, B.Sc.(Hons.) Technical Staff John Clarke, B.E.(Elec.) Robert Flynn Darren Yates Reader Services Ann Jenkinson Advertising Manager Paul Buchtmann (02) 979 5644 Mobile: (018) 28 5532 Regular Contributors The North Head UHF translator: much ado about nothing Just over a year ago, in the March 1990 issue of SILICON CHIP, I wrote a "Publisher's Letter" commenting on the controversy over the UHF translator at Sydney's North Head. For many years, residents of Sydney's beachside suburbs have been waiting for this installation so that they could at last enjoy ghost-free and noise free TV reception . This month, the North Head UHF translator is scheduled to go into operation. We sincerely hope it does, partly because this issue features a UHF corner reflector antenna which we think will be a timely project. It seems as though all the conservationists who protested about the installation have finally had their fears allayed (or have gone on to oppose other developments) and the project has come to fruition. But consider what an enormous waste of time it has all been. The North Head UHF translator was first planned in the mid-seventies and should have been in operation shortly after the Kings Cross UHF translators were installed. Has the project benefitted from the delay? Of course not and neither have all the viewers who have waited all these years. Which means there are some lessons to be learnt. For their part, people concerned about the environment should not mindlessly oppose every new development on the vague premise that some animal habitat or the quality of life will be destroyed. That leaves them open to the latest politicians' epithet of "greenie" or worse, "ratbag greenie". Second, any company or organisation planning a large development should do their homework and make sure that all the pros and cons are fully explained to the public. If that is not done, there is bound to be a hue and cry. Interestingly, while the North Head UHF translator was subject to a lot of opposition, what about all the antenna towers for the burgeoning cellular telephone networks in every Australian city? They have gone in with hardly a ripple. And let's face it, they are ugly and they're often right in the middle of prime residential areas. As far as I am concerned, if the cellular telephone towers can go ahead without problems, there is no real reason why all the other planned UHF translators for Sydney's difficult reception areas can't be installed without further delay. Don't you agree? Leo Simpson Brendan Akhurst Jennifer Bonn itcha, B.A. Garry Cratt, VK2YBX John Hill Jim Lawler, MTETIA Bryan Maher, M.E., B.Sc. Jim Yalden, VK2YGY Bob Young Photography Stuart Bryce Editorial Advisory Panel Phi lip Watson, MIREE, VK2ZPW Norman Marks Steve Payor, B.Sc., B.E. SILICON CHIP is published 12 times a year by Silicon Chip Publications Pty Ltd. All material copyright ©. No part of this publication may be reproduced without prior written consent of the publisher. Printing: Magazine Printers Pty Ltd, Alexandria, NSW; Macquarie Print, Dubbo, NSW. 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 ] UN E 1991 3