Silicon ChipMarket Centre - October 2014 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: GPS car navigation still not perfect
  4. Review: Building The Velleman K8200 3D Printer by Alan Ford
  5. Project: Currawong Stereo Valve Amplifier: A Preview by Leo Simpson & Nicholas Vinen
  6. Feature: How To Remove Rust By Electrolysis by Dr David Maddison
  7. Project: Courtesy LED Light Delay For Cars by John Clarke
  8. Subscriptions
  9. Project: Digital Effects Processor For Guitars/Musical Instruments by Nicholas Vinen
  10. Project: Passive Direct Injection (DI) Box by John Clarke
  11. Review: Signal Hound USB-SA44B Spectrum Analyser by Jim Rowe
  12. Project: Create Eerie Music With The Opto-Theremin, Pt.2 by John Clarke
  13. PartShop
  14. Vintage Radio: The Mullard 5-10 Ten Watt Valve Amplifier by Malcolm Fowler
  15. Market Centre
  16. Advertising Index
  17. Outer Back Cover

This is only a preview of the October 2014 issue of Silicon Chip.

You can view 29 of the 104 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.

Items relevant to "Currawong Stereo Valve Amplifier: A Preview":
  • Currawong 2 x 10W Stereo Valve Amplifier main PCB [01111141] (AUD $55.00)
  • Currawong Remote Control PCB [01111144] (AUD $5.00)
  • PIC16F88-I/P programmed for the Currawong Remote Volume Control [0111114A.HEX] (Programmed Microcontroller, AUD $15.00)
  • Hard-to-get parts for the Currawong stereo valve amplifier (Component, AUD $55.00)
  • Front & rear panels for the Currawong 2 x 10W Stereo Valve Amplifier [01111142/3] (PCB, AUD $30.00)
  • Currawong 2 x 10W Stereo Valve Amplifier acrylic top cover (PCB, AUD $30.00)
  • Currawong 2 x 10W Stereo Valve Amplifier top cover cutting diagram (Software, Free)
  • Firmware and source code for the Currawong Remote Volume Control [0111114A.HEX] (Software, Free)
  • Currawong 2 x 10W Stereo Valve Amplifier main PCB pattern [01111141] (Free)
  • Currawong 2 x 10W Stereo Valve Amplifier panel artwork (PDF download) (Free)
Articles in this series:
  • Currawong Stereo Valve Amplifier: A Preview (October 2014)
  • Currawong 2 x 10W Stereo Valve Amplifier, Pt.1 (November 2014)
  • Currawong 2 x 10W Stereo Valve Amplifier, Pt.2 (December 2014)
  • The Currawong 2 x 10W Stereo Valve Amplifier, Pt.3 (January 2015)
  • Modifying the Currawong Amplifier: Is It Worthwhile? (March 2015)
  • A New Transformer For The Currawong Valve Amplifier (October 2016)
Items relevant to "Courtesy LED Light Delay For Cars":
  • Car LED Courtesy Light Delay PCB [05109141/15109141] (AUD $7.50)
  • PIC12F675-E/P programmed for the Courtesy LED Light Delay for Cars [0510914A.HEX/1510914A.HEX] (Programmed Microcontroller, AUD $10.00)
  • Firmware for the Courtesy LED Light Delay for Cars [0110514A.HEX] (Software, Free)
  • Car LED Courtesy Light Delay PCB pattern (PDF download) [05109141/15109141] (Free)
  • Courtesy LED Light Delay for Cars top panel artwork (PDF download) (Free)
Items relevant to "Digital Effects Processor For Guitars/Musical Instruments":
  • Dual-Channel Audio Delay / Stereo Echo & Reverb / Digital Effects Processor PCB [01110131] (AUD $15.00)
  • PIC32MX470F512H-I/PT programmed for the Digital Effects Processor [0120914A.HEX] (Programmed Microcontroller, AUD $20.00)
  • Extra parts for the Dual-Channel Audio Delay / Stereo Echo & Reverb / Digital Effects Processor (Component, AUD $20.00)
  • Firmware (C and HEX) files for the Digital Effects Processor [0120914A.HEX] (Software, Free)
  • Dual-Channel Audio Delay / Stereo Echo & Reverb / Digital Effects Processor PCB pattern (PDF download) [01110131] (Free)
Items relevant to "Passive Direct Injection (DI) Box":
  • Passive Direct Injection (DI) Box PCB [23109141] (AUD $5.00)
  • Passive Direct Injection (DI) Box PCB pattern (PDF download) [23109141] (Free)
  • Passive Direct Injection (DI) Box panel artwork (PDF download) (Free)
Items relevant to "Create Eerie Music With The Opto-Theremin, Pt.2":
  • Opto-Theremin PCB [23108141] (AUD $15.00)
  • Proximity Sensor PCB for the Opto-Theremin [23108142] (AUD $5.00)
  • TDA7052A 1.1W audio amplifier IC (DIP-8) (Component, AUD $3.00)
  • MC1496BDG or MC1496DR2G Balanced Modulator/Demodulator IC (SOIC-14) (Component, AUD $3.00)
  • Opto-Theremin top and side panel artwork (PDF download) (Free)
Articles in this series:
  • Create Eerie Music With The Opto-Theremin, Pt.1 (September 2014)
  • Create Eerie Music With The Opto-Theremin, Pt.2 (October 2014)

Purchase a printed copy of this issue for $10.00.
MARKET CENTRE Cash in your surplus gear. Advertise it here in SILICON CHIP FOR SALE Audio + Video: Professional quality Quest AV brand equipment is made and sold in Australia exclusively by Quest Electronics. Ph 0431 920 667. sales<at>questronix.com.au PCB MANUFACTURE: single to multi­ layer. Bare board tested. One-offs to any quantity. 48 hour service. Artwork design. Excellent prices. Check out our specials: www.ldelectronics.com.au LEDs: BRAND NAME and generic LEDs. Heatsinks, fans, LED drivers, power supplies, LED ribbon, kits, components, hardware, tritium markers. We can order almost anything in! www. ledsales.com.au PCBs MADE, ONE OR MANY. Any format, hobbyists welcome. Sesame Electronics Phone 0434 781 191. sesame<at>sesame.com.au www.sesame.com.au PCBs & Micros: SILICON CHIP can supply PCBs and programmed microcon- trollers for all recent projects. Order from our Online Shop at www.siliconchip. com.au or phone (02) 9939 3295. KIT ASSEMBLY & REPAIR VINTAGE RADIO REPAIRS: electrical mechanical fitter with 36 years ex­ perience and extensive knowledge of valve and transistor radios. Professional and reliable repairs. All workmanship guaranteed. $10 inspection fee plus charges for parts and labour as required. Labour fees $35 p/h. Pensioner discounts available on application. Contact Alan on 0425 122 415 or email bigal radioshack<at>gmail.com KEITH RIPPON KIT ASSEMBLY & REPAIR: * Australia & New Zealand; * Small production runs. Phone Keith 0409 662 794. keith.rippon<at>gmail.com WANTED WANTED: EARLY HIFIs, AMPLIFIERS, Speakers, Turntables, Valves, Books, Quad, Leak, Pye, Lowther, Ortofon, DOWNLOAD OUR CATALOG at www.iinet.net.au/~worcom WORLDWIDE ELECTRONIC COMPONENTS PO Box 631, Hillarys, WA 6923 Ph: (08) 9307 7305  Fax: (08) 9307 7309 Email: worcom<at>iinet.net.au KEEP YOUR COPIES OF AS GOOD AS THE DAY THEY WERE BORN! ONLY 95 $ 1P4LUS p&p A superb-looking SILICON CHIP binder will keep your magazines in pristine condition. * Holds up to 14 issues * Heavy duty vinyl * Easy wire inserts ORDER NOW AT www.siliconchip.com.au/shop SME, Western Electric, Altec, Marantz, McIntosh, Tannoy, Goodmans, Wharfe­ dale, radio and wireless. Collector/ Hobbyist will pay cash. (07) 5471 1062. johnmurt<at>highprofile.com.au ADVERTISING IN MARKET CENTRE Classified Ad Rates: $32.00 for up to 20 words plus 95 cents for each additional word. Display ads in Market Centre (minimum 2cm deep, maximum 10cm deep): $82.50 per column centimetre per insertion. All prices include GST. Closing date: 5 weeks prior to month of sale. To book, email the text to silicon<at>siliconchip.com.au and include your name, address & credit card details, or phone Glyn (02) 9939 3295 or 0431 792 293. Ask SILICON CHIP . . . continued from page 102 mediate frequencies in this project and I also have no analog TV signals to test if the TV tuner is working. Some VHF/UHF scanners cost just $100 so why bother with this? Well, the idea is that it’s home-made and not all frequencies are covered by most VHF/UHF scanners; there are frequency gaps between bands. It could also be modified for radio telescope work by adding a powerful siliconchip.com.au broadband RF preamplifier and dish. And it could be used for DRM/digital communications listening. I got this idea from www.uzzors2k.4hv.org (J. C., Mitchell Park, SA). •  There doesn’t seem much point in using an old VHF/UHF tuner as a scanner. PAL analog transmissions have now ceased and all TV is digital. If you want to scan all the bands, the easiest and cheapest way is to use a DVB-TV dongle with your computer, as described in our story in the April 2013 issue. This theme was further expanded in following issues with the description of a software defined radio (SDR). To see a preview of the April story, go to www.siliconchip.com.au/ Issue/2013/April/How+To+Get+Digita l+TV+On+Your+Laptop+Or+PC VOX circuit required As a member of a volunteer emergency service, we have a bank of transceivers, ie, 27MHz discrete VHF channel sets. I am enquiring if there is a kit in your vast storage of DIY kits continued page 104 October 2014  103