22 Radio and Receiver Projects for the Evil Genius
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2 Identifying Components and Reading Schematics
3 Electronic Parts Installation and Soldering
4 AM FM and Shortwave Crystal Radio Projects
5 TRF AM Radio Receiver
6 SolidState FM Broadcast Receiver
7 Doerle Single Tube SuperRegenerative Radio Receiver
8 IC Shortwave Radio Receiver
15 Induction Loop Receiving System
16 Lightning Storm Monitor
17 Ambient Power Receiver
18 Earth Field Magnetometer Project
19 Sudden Ionospheric Disturbance SIDs Receiver
20 Aurora Monitor Project
21 UltraLow Frequency ULF Receiver
22 Jupiter Radio Telescope Receiver
9 8040 Meter Code Practice Receiver
10 WWV 10 MHz TimeCode Receiver
11 VHF Public Service Monitor ActionBand Receiver
12 6 2Meter Band Amateur Radio Receiver
13 Active and Passive Aircraft Band Receivers
14 VLF or Very Low Frequency Radio Receiver
23 Weather Satellite Receiver
24 Analog to Digital Converters ADCs
Electronic Parts Suppliers
Other editions - View all
adjust aircraft alignment alphanumeric coded amateur radio amplitude amplitude modulation antenna audio amplifier band denotes broadcast Ceramic Ceramic Ceramic chassis circuit board code chart coil color band connected crystal radio detector digit diode Direct Conversion Receiver disk capacitor Doerle electrolytic capacitors electronics end-cutters excess component leads ferrite filter frequency go ahead ground headphones identify induction loop inductor input integrated circuits jack layout diagrams lightning locate look magnetic field magnetometer metal meter modulation Monitor mounted Multiplier Tolerance Mylar Mylar Mylar Mylar op-amp oscillator output PC board pF Ceramic plastic polarity marking potentiometer power supply printed circuit board Resistor color code schematic semiconductors sensor shortwave shown in Figure signal socket solder joints soldering iron speaker stations switch transistor trim the excess trimmer tuning capacitor tuning control turns Value Type Code voltage volume control watt wave weather satellite whistler wire
Page 105 - The second is the duration of 9, 192, 631, 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium- 133 atom (13th CGPM, 1967).
Page 85 - Orange 3 3 Yellow 4 4 Green 5 5 Blue 6 6 Violet 7 7 Gray 8 8 White 9 9 BIBLIOGRAPHY Artwlck, BA, Microcomputer Interfacing, PrenticeHall, Englewood Cliffs, NJ, 1980.
Page 31 - ... freely and hold them still until cool. • When the iron is set aside, or if it loses its shiny appearance, wipe away any dirt with a wet cloth or sponge. If it remains dull after cleaning, tin it again. Overheating a transistor or diode while soldering can cause permanent damage. Use a small heat sink when you solder transistors, diodes or components with plastic parts that can melt. Grip the component lead with a pair of pliers up close to the unit so that the heat is conducted away (be careful...
Page 29 - Any stress or motion applied to "plastic solder" causes a poor solder joint. 60-40 solder has the best wetting qualities. Wetting is the ability to spread rapidly and bond materials uniformly. 60-40 solder also has a low melting point. These factors make it the most commonly used solder in electronics. Some connections that carry high current can't be made with ordinary tin-lead solder because the heat generated by the current would melt the solder. Automotive starter brushes and transmitter tank...
Page 9 - Phone and Image modes are permitted between 7075 and 7100 kHz for FCC licensed stations in ITU Regions 1 and 3 and by FCC licensed stations in ITU Region 2 West of 130 degrees West longitude or South of 20 degrees North latitude See Sections 97 305(c) and 97.307(0(11 ). Novice and Technician Plus licensees outside ITU Region 2 may use CW only between 7050 and 7075 kHz.
Page 31 - Mechanical stress can damage components, too. Mount components so there is no appreciable mechanical strain on the leads. Soldering to the pins of coil forms or male cable plugs can be difficult. Use a suitable small twist drill to clean the inside of the pin and then tin it with resincore solder. While it is still liquid, clear the surplus solder from each pin with a whipping motion or by blowing through the pin from the inside of the form or plug. Watch out for flying hot solder!
Page 105 - Weather information about major storms in the Atlantic and eastern North Pacific are broadcast in voice from WWV at 8, 9, and 10 minutes after each hour. Similar storm warnings covering the eastern and central North Pacific are given from WWVH at 48, 49, and 50 minutes after each hour. An additional segment (at 1 1 minutes after the hour on WWV and at 51 minutes on WWVH) may be used when there are unusually widespread storm conditions. These brief messages are designed to tell mariners of storm threats...
Page 29 - A temperature controlled iron works well, although the cost is not justified for occasional projects. Get an iron with a small conical or chisel tip. Soldering is not like gluing; solder does more than bind metal together and provide an electrically conductive path between them. Soldered metals and the solder combine to form an alloy. You may need an assortment of soldering irons to do a wide variety of soldering tasks. They range in size from a small 25-watt iron for delicate printed-circuit work...
Page 31 - ... scrubbing pad. Do the circuit board at the beginning of assembly and individual parts such as resistors and capacitors immediately before soldering. Some parts (such as ICs and surface-mount components) cannot be easily cleaned; don't worry unless they're exceptionally dirty. • Prepare the tool. It should be hot enough to melt solder applied to its tip quickly (half a second when dry, instantly when wet with solder). Apply a little solder directly to the tip so that the surface is shiny. This...
Page 30 - ... manufacturers also sell soldering guns. Small "pencil" butane torches are also available, with optional soldering-iron tips. A small butane torch is available from the Solder-It Company. This company also sells a soldering kit that contains paste solders (in syringes) for electronics, pot metal and plumbing. Keep soldering tools in good condition by keeping the tips well tinned with solder. Do not run them at full temperature for long periods when not in use. After each period of use, remove...