Silicon ChipContents - April 2009 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Everyday solvents can be dangerous
  4. Feature: Digital Radio Is Coming, Pt.3 by Alan Hughes
  5. Feature: Wireless Networking With Ubuntu & Puppy Linux by Greg Swain
  6. Project: Multi-Function Remote-Controlled Lamp Dimmer by Mauro Grassi
  7. Project: School Zone Speed Alert by Jim Rowe
  8. Project: USB Printer Share Switch by Jim Rowe & Greg Swain
  9. Project: Build A Microcurrent DMM Adaptor by David L. Jones
  10. Review: Tektronix MSO2024 Mixed Signal Oscilloscope by Mauro Grassi
  11. Vintage Radio: The Airzone 520/550 5-valve mantel receiver by Rodney Champness
  12. Feature: Half-Duplex With HopeRF’s HM-TR UHF Transceivers by Stan Swan
  13. Book Store
  14. Advertising Index
  15. Outer Back Cover

This is only a preview of the April 2009 issue of Silicon Chip.

You can view 33 of the 96 pages in the full issue, including the advertisments.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Articles in this series:
  • Digital Radio Is Coming, Pt.1 (February 2009)
  • Digital Radio Is Coming, Pt.1 (February 2009)
  • Digital Radio Is Coming, Pt.2 (March 2009)
  • Digital Radio Is Coming, Pt.2 (March 2009)
  • Digital Radio Is Coming, Pt.3 (April 2009)
  • Digital Radio Is Coming, Pt.3 (April 2009)
  • Digital Radio Is Coming, Pt.4 (June 2009)
  • Digital Radio Is Coming, Pt.4 (June 2009)
  • Digital Radio Is Coming, Pt.5 (August 2009)
  • Digital Radio Is Coming, Pt.5 (August 2009)
Items relevant to "Multi-Function Remote-Controlled Lamp Dimmer":
  • Intelligent Remote-Controlled Dimmer PCB [10104092] (AUD $10.00)
  • PIC18F1320-I/SO programmed for the Intelligent Dimmer [1010409A.HEX] (Programmed Microcontroller, AUD $15.00)
  • PIC18F1320 firmware and source code for the Intelligent Remote-Controlled Dimmer [1010409A.HEX] (Software, Free)
  • Intelligent Remote-Controlled Dimmer PCB pattern (PDF download) [10104092] (Free)
  • Intelligent Remote-Controlled Dimmer panel artwork (PDF download) (Free)
Items relevant to "USB Printer Share Switch":
  • Manual 2-Way USB Device Switch PCB [07104091] (AUD $5.00)
  • USB Print Share Switch PCB pattern (PDF download) [07104091] (Free)
  • USB Printer Share Switch front panel artwork (PDF download) (Free)
Articles in this series:
  • Amateur Radio (November 1987)
  • Amateur Radio (November 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (February 1988)
  • Amateur Radio (February 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (January 1989)
  • Amateur Radio (January 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (February 1990)
  • Amateur Radio (February 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (July 1990)
  • Amateur Radio (July 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (January 1991)
  • Amateur Radio (January 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (January 1992)
  • Amateur Radio (January 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (January 1993)
  • Amateur Radio (January 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (February 1994)
  • Amateur Radio (February 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (January 1995)
  • Amateur Radio (January 1995)
  • CB Radio Can Now Transmit Data (March 2001)
  • CB Radio Can Now Transmit Data (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • Stressless Wireless (October 2004)
  • Stressless Wireless (October 2004)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Dorji 433MHz Wireless Data Modules (January 2012)
  • Dorji 433MHz Wireless Data Modules (January 2012)

Purchase a printed copy of this issue for $10.00.
Contents Vol.22, No.4; April 2009 www.siliconchip.com.au SILICON CHIP Features 11 Digital Radio Is Coming, Pt.3 This month, we look at how program and data information is multiplexed within the transmission – by Alan Hughes 14 Wireless Networking With Ubuntu & Puppy Linux Wireless networking in Linux is easy. Here’s how to do it for Ubuntu and Puppy Linux. We also tell you how to lock down a wireless network, to stop freeloaders from stealing your bandwidth – by Greg Swain Wireless Networking In Ubuntu & Puppy Linux– Page 14. 76 Review: Tektronix MSO2024 Mixed Signal Oscilloscope It’s suitable for a wide range of applications & features four analog and 16 digital inputs, a 1Gs/s sampling rate & a 200MHz bandwidth – by Mauro Grassi 85 Half-Duplex With HopeRF’s HM-TR UHF Transceivers Using a PICAXE to drive HopeRF’s HM-TR 433MHz programmable data transceivers works really well – by Stan Swan Pro jects To Build 22 Multi-Function Remote-Controlled Lamp Dimmer Multi-Function RemoteControlled Dimmer – Page 22. A dimmer is just a dimmer, right? This little beauty will change your mind. It has five modes of operation and can be controlled using virtually any universal remote – by Mauro Grassi 36 School Zone Speed Alert Protect your driver’s licence and your wallet with this project. It flashes a warning LED during the 40km/h school speed zone times – by Jim Rowe 42 USB Printer Share Switch Easy-to-build project lets you switch a USB printer or some other USB device between two PCs – by Jim Rowe & Greg Swain School Zone Speed Alert – Page 36. 58 Build A Microcurrent DMM Adaptor Your digital multimeter can not make accurate current measurements in lowvoltage circuits. This low-cost precision current adaptor solves that problem – by David L. Jones Special Columns 53 Serviceman’s Log Is it worth fixing an older plasma set? – by the Serviceman 66 Circuit Notebook (1) Automated Water Tank Filler; (2) Modified Flexitimer; (3) RS232C To Current Loop Converter; (4) Simple Counter Uses A Crystal Clock As A Readout; (5) High-Side Current Monitor; (6) Electronic Kaleidoscope 80 Vintage Radio The Airzone 520/550 5-valve mantel receiver – by Rodney Champness USB Printer Share Switch – Page 42. Build A Microcurrent DMM Adaptor – Page 58. Departments   2 Publisher’s Letter   4 Mailbag 30 Order Form siliconchip.com.au 88 Ask Silicon Chip 91 Notes & Errata 94 Market Centre April pril 2009  1