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Vintage Radio
16 January 2007
Now considered to be relics of a bygone era, stereo radiograms (or stereograms) were common during the 1960s. The Philips RF5 stereogram was typical of this new breed of entertainment systems.
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Salvage It!
14 January 2007
Old tape-based answering machines can now be picked up for next to nothing or perhaps you've got one stashed away in the cupboard. Here are few ideas to put it to use.
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Circuit NoteBook
12 January 2007
Interesting circuit ideas which we have checked but not built and tested. Contributions from readers are welcome
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"Degen" Synthesised HF Communications Receiver
05 January 2007
Elsewhere in this issue we feature "WinRadio": a very high performance, computer-based radio receiver. As that review was being written, this tiny communications receiver also arrived at SILICON CHIP. It's very significantly cheaper, covers the complete 100kHz to 30MHz MF/HF band (with 88-108MHz broadcast band into the bargain) and offers a wide range of user controls. We thought it apposite to put this review in the same issue so readers can get make their own comparisons...
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Cordless Power Tool Charger Controller
23 December 2006
Protect your investment and extend the life of your power tool rechargable batteries. Add this power tool charge controller and never cook a nicad again!
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Bringing a dead cordless drill back to life
21 December 2006
Do you have cordless drills or other battery-powered tools lying unloved and unused because their batteries have failed? Don't do the usual and buy another one because they're so cheap: think of the planet and resurrect the
ones you have! And then build our
new power tool charger to really
care for your
batteries!
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A Heartbeat CPR Training Beeper
20 December 2006
During mid-2006, Australian emergency health care providers and first aid bodies largely fell into line with the Australian Resuscitation Council guidelines for the delivery method and timing of cardio-pulmonary resuscitation - or CPR. Here's a low-cost trainer which provides audible beats to get the timing right.
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