Silicon ChipCB Radio Can Now Transmit Data - March 2001 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: The electrical wiring debate - reform is needed
  4. Feature: What's On Offer In "Walkie Talkies" by Ross Tester
  5. Feature: Mobile Magic: Driving Your Mobile Phone From A PC by Greg Swain
  6. Feature: Using Infrared Devices With Your PC by Greg Swain
  7. Review: Reiew: Marantz DR 6000 CD Recorder by Leo Simpson
  8. Feature: CB Radio Can Now Transmit Data by Silicon Chip
  9. Project: Big-Digit 12/24-Hour Clock by John Clarke
  10. Product Showcase
  11. Project: A Sun-Seeking Sunflower by Craig Maynard & Ross Tester
  12. Project: Parallel Port PIC Programmer & Checkerboard by David Deer
  13. Feature: Making Photo Resist PC Boards At Home by Ross Tester
  14. Project: Protoboards: More Fun With Comparators by Leo Simpson
  15. Project: More-MIDI: A Simple MIDI Expansion Box by Jim Rowe
  16. Vintage Radio: The 1929 AWA C58 radiogram by Rodney Champness
  17. Back Issues
  18. Notes & Errata
  19. Product Showcase
  20. Market Centre
  21. Advertising Index
  22. Outer Back Cover

This is only a preview of the March 2001 issue of Silicon Chip.

You can view 32 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.

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)
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)
Items relevant to "Big-Digit 12/24-Hour Clock":
  • Big-Digit 12/24-Hour Clock display PCB [04103012/04102011] (AUD $15.00)
  • Big-Digit 12/24-Hour Clock processor PCB [04103011] (AUD $15.00)
  • PIC16F84(A)-04/P programmed for the Big-Digit 12/24-Hour Clock [CLOCK1.HEX] (Programmed Microcontroller, AUD $10.00)
  • PIC16F84 firmware and source code for the Big-Digit 12/24-Hour Clock [CLOCK1.HEX] (Software, Free)
  • Big-Digit 12/24-Hour Clock PCB patterns (PDF download) [04103011/2] (Free)
  • Big-Digit 12/24-Hour Clock panel artwork and mask (PDF download) (Free)
Items relevant to "A Sun-Seeking Sunflower":
  • Sun-seeking Sunflower PCB patterns (PDF download) (Free)
Items relevant to "Parallel Port PIC Programmer & Checkerboard":
  • DOS and Windows software for the Parallel Port PIC Programmer (Free)
  • Parallel Port PIC Programmer PCB pattern (PDF download) (Free)
Items relevant to "More-MIDI: A Simple MIDI Expansion Box":
  • More-MIDI PCB pattern (PDF download) (Free)
  • More-MIDI panel artwork (PDF download) (Free)

Purchase a printed copy of this issue for $10.00.
UHF CB radio can now transmit data A fter having been lobbied for many years by rural users, the Australian Communications Authority (ACA) has announced changes to Citizens band (CB) radio licences to allow the transmission of data on UHF CB channels 22 & 23. The changes announced by the ACA regarding these two channels will allow for the use of selective calling techniques such as CTCSS (Continuous Tone Coded Squelch System) and telemetry and telecommand systems. Tone squelch allows a system of selective calling, where a number of transceivers share one channel but will only “wake up” and listen if they receive the same preset tones as they have had previously programmed. Telemetry and telecommand will allow data to be transmitted between sets. Previously the regulations for- The Uniden UH-100 is already equipped with CTCSS. Now it – and data transmission – will be legal. Courtesy Dick Smith Electronics. bade this, citing CB as a “voice only” medium. The use of these techniques will allow the design of cheap equipment to remotely monitor various parameters on farms including water levels in dams and rainfall in paddocks over a period. They could also be used to control irrigation pumps and even to open and close gates. Similar techniques could be used to remotely monitor equipment on boats, such as bilge water levels, battery voltages and even weather conditions - why go down to the boat if it is blowing a gale? Or maybe you might want to check the boat if it is blowing a gale! And how about security? Remote burglar alarms, remote control and monitoring and so on? The list of possible uses is endless. Which may be why some CB users are objecting to the changes. One change which has not been included is “packet radio”, currently allowed on the Amateur Radio bands. The ACA is also seeking to amend the UHF CB radio equipment standard to reflect the above changes. This will require the fitting of a “channel busy” light to indicate the presence of any signal on the channel concerned and a switch to disable any selective calling facility to create a “listen before transmit” function. Now that the change to allow data transmission has been made, channels 22 and 23 will no longer be available for voice transmission. If you want more information on the changes to the CB class licence and related topics go to: SC www.acma.gov.au MARCH 2001  29