Crystal Radio - How To Build Books & Plans Library On Dvd


Crystal Radio - How To Build Books & Plans Library On Dvd

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Crystal Radio - How To Build Books & Plans Library On Dvd:
$10


DESCRIPTION

A crystal radio receiver, also called a crystal set or cat's whisker receiver, is a very simple radio receiver, popular in the early days of radio. It needs no battery or power source and runs on the power received from radio waves by a long wire antenna. It gets its name from its most important component, known as a crystal detector, originally made with a piece of crystalline mineral such as galena. This component is now called a diode. Crystal radios are the simplest type of radio receiver, and can be handmade with a few inexpensive parts, like an antenna wire, tuning coil of copper wire, crystal detector and earphones. They are distinct from ordinary radios because they are passive receivers, while other radios use a separate source of electric power such as a battery or the mains power to amplify the weak radio signal from the antenna so it is louder. Thus crystal sets produce rather weak sound and must be listened to with earphones, and can only pick up stations within a limited range. The rectifying property of crystals was discovered in 1874 by Karl Ferdinand Braun, and crystal detectors were developed and applied to radio receivers between 1894 and 1906 by Jagadish Chandra Bose, G. W. Pickard and others. Crystal radios were the first widely used type of radio receiver,[11] and the main type used during the wireless telegraphy era.[12] Sold and homemade by the millions, the inexpensive and reliable crystal radio was a major driving force in the introduction of radio to the public, contributing to the development of radio as an entertainment medium around 1920. After about 1920, crystal sets were superseded by the first amplifying receivers, which used vacuum tubes , and became obsolete for commercial use. However they continued to be built by hobbyists, youth groups and the Boy Scouts as a way of learning about the technology of radio. Today they are still sold as educational devices, and there are groups of enthusiasts devoted to their construction who hold competitions comparing the performance of their home-built designs. Crystal radios can be designed to receive almost any radio frequency band, but most receive the AM broadcast band. A few receive the 49-meter international shortwave band, but strong signals are required. The first crystal sets received wireless telegraphy signals broadcast by spark-gap transmitters at frequencies as low as 20 kHz. This extensive twenty {20} volume library covers all the basics to build and design your own crystal radio with readily available parts from most electronic parts distributors.
Summary by Wikipedia FORMAT FOR THIS ITEM: All files are in .pdf format Library includes twenty-nine [29} books: :: Elements of radio telephony :: Manual of wireless telegraphy and telephony :: Popular radio :: Practical radio :: Principles of radio communication :: Radio communication pamphlet :: Radio engineering principles :: Radio for beginners :: Radio for the amateur :: Radio for the beginner :: Radio hook ups :: Radio instruments and measurements :: Radio phone receiving :: Radio reception :: Radio telephony for everyone :: The Home Radio - How to Make and Use it (1922) :: The principles underlying radio communication :: Wireless telegraphy and telephony explained :: Wireless telegraphy and telephony without wires :: Wireless telegraphy and wireless telephony :: A Beginners Guide to Radio :: Crystal Experimenters Handbook :: How to Build a Doerle Radio :: How to Make the Most Popular All Wave 1 and 2 Tube Receivers {1938} :: Knock Out Receivers {1924} :: Radio Expermenters Guide {1923} :: Radio Instruments & Measurements {1918} :: The Wireless Age Magazine {1921} :: Wireless by Massie {1908}
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Catalog & book pages in our collections are in .pdf format {Unless otherwise stated}, so you can easily view, copy, print, as you see fit. Please note the product format in the above description. You may use our scanned images for research or school projects, all pages are originally scanned at 300 DPI or more. View directly in Adobe Reader - perfect for reprinting in newsletters, magazines or art projects, use as clip art in any graphics program, scale it, edit it, print it to suit your needs. Image and photo collection disks are intended to be used on any computer/software program capable of viewing .gifs & .jpgs. CD is not intended for TV DVD Player viewing, thru some newer models do offer this option. Audio books and Old Time Radio Shows are typically available in .MP3 format, usually on DVD disk to offer you the most shows on the least amount of disks. These files may be recopied to CD for play back on your home or automobile audio system. Please verify your equipment to ensure disk will in fact play on your device. The format of each product is listed in the above description. Before offerding on this item, please note the shipping location. We ship from multiple locations, CD/DVD's are shipped immediately ~ usually the SAME day we receive payment. Custom vintage giftware is Special Order, and will ship factory direct - during the busy holiday season please allow 10 to 14 days production time BEFORE item is shipped. Shipping ~ Save on shipping, purchase additional items and pay only $1.00 for each CD/DVD! Please wait for invoice prior to remitting payment - we are happy to combine your purchases to save on shipping costs. Did you know that many of our reproduction catalog covers are now available on great gift items such as posters, mouse pads, clocks, jewelry and more? Please check out the VLR on store to see all these all original gift items. Most of all, a big THANK YOU for your interest in our products. Any questions or concerns please contact us via messaging system, we will usually respond within a few hours.


Crystal Radio - How To Build Books & Plans Library On Dvd:
$10

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