Related Manuals for Allied Radio Knight-Kit Crystal Set 83 Y 261
Summary of Contents for Allied Radio Knight-Kit Crystal Set 83 Y 261
- Page 2 The KNIGHT Crystal Set is the simplest type of radio receiver that can be built. It can be built in a few hours by an inexperienced person. Having no tubes, it requires no batteries or other form of power supply. Yet, in most localities, this little receiver, when connected to a good antenna and ground, will give remarkably clear and reliable headphone operation.
- Page 3 KITS WIRED WITH ACID-CORE SOLDER OR ACID FLUX WILL CORRODE AND WILL NOT WORK PROPERLY. SUCH KITS ARE NOT ELIGIBLE FOR RE-PAIR OR SERVICE. WINDING THE COIL SEE FIGURE I. COIL WINDING NOTES: Unwind several feet from the coil of enameled wire supplied. To avoid kinks in the wire, have someone hold the roll of wire and feed it slowly as required.
- Page 4 ( ) Thoroughly scrape the enamel coating from the ends of the two wires coming through hole "D”. Twist these two wires together. Connect, but do not solder them to the solder lug. ( ) Solder the remaining coil wire coming from hole “G” to the tuning capacitor . ( ) Note that the general purpose crystal diode has an ARROW HEAD marking on one end and a BAR marking on the other end.
- Page 5 ( ) Attach the antenna and ground leads to their respective clips. ( ) Slowly rotate the tuning capacitor through its complete range. In most areas, you will be able to hear several stations. If you have made several taps on the secondary, move the diode lead to the various taps. Notice the difference in selectivity and sensitivity.
- Page 6 INSTALLING AN ANTENNA AND GROUND A good antenna and ground are required to obtain maxi- mum performance and most enjoyment from your Crystal Set. A typical antenna and ground installation is shown in Figure 3. Bear in mind that this is only a typical installation, and can be revised to suit your particular requirements.
- Page 7 THE HISTORY OF RADIO . Radio had its beginning way back in 1873, when Ulysses S. Grant was President of the United States. In this year an Englishman by the name of James C. Maxwell made a prediction that electromagnetic waves, or, as he called them, “ether"...
- Page 8 combined signal is then sent up to the antenna where it shoots out in all directions ac a speed of 186,000 miles per second. At the receiver, the receiving antenna "picks up" a very small part of all the transmitted signals in the air.
- Page 9 This wired KNIGHT kit may be returned for inspection within one year after purchase for a special service charge of $1.00. Parts within the standard EIA 90-day warranty period will be replaced without charge for the parts. A charge will be made for parts damaged in construction or because of a wiring error, or for parts which are beyond the 90-day warranty period, After the one-year period, service charges are based on the length of time required to repair the unit plus the cost of any new parts that may be needed.
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