Latest articles from Office Supplies (http://www.office-supplies.co.za) http://www.office-supplies.co.za 2012-02-07T01:50:55+01:00 text/html 2009-01-01T12:27:01+01:00 http://www.office-supplies.co.za http://www.office-supplies.co.za/metal-detectors-reviews-a25.html The very same web pages have very often some field performance test results posted and also testimonials by customers who bought these apparatuses, proclaiming the efficiency and displaying the bounty. text/html 2009-01-01T12:23:59+01:00 http://www.office-supplies.co.za http://www.office-supplies.co.za/radio-shack-metal-detectors-a24.html The history of Radio Shack metal detectors is easily explained. text/html 2009-01-01T12:22:26+01:00 http://www.office-supplies.co.za http://www.office-supplies.co.za/debate-of-metal-detectors-a23.html There are several debates on metal detectors which currently are being discussed among the public. text/html 2009-01-01T12:19:55+01:00 http://www.office-supplies.co.za http://www.office-supplies.co.za/metal-detectors-with-vlf-a22.html The VLF technology is based on a two coil principle, where the transmitter coil is being used to send an electrical impulse in a very low frequency through the coil, emitting a signal, which is being picked up by the second coil, the receiver coil, where the wire of the coil is being used as an antenna to pick up the reflected frequencies from objects which are located anywhere in the ground. text/html 2009-01-01T12:17:59+01:00 http://www.office-supplies.co.za http://www.office-supplies.co.za/headphones-for-metal-detectors-a21.html The reason why most of the relic hunters use headphones and not the usually built in speaker is that they do not want to disturb other people in the vicinity.