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THE RADIO BUILDER: Tactical Antennas

http://radiobuilder.blogspot.com/2010/05/tactical-antennas.html

See how do those circuits work! If you liked my blog click some ads :). Wednesday, May 19, 2010. Critical Tasks: 01-5705.07-0003. In this lesson, you will learn about the types of tactical antennas and their radiation patterns. In addition, you will learn about fabricating field expedient antennas using various repair techniques. Explain basic antenna theory. To demonstrate competence, you must achieve a minimum of 70 percent on the subcourse examination. FM 11-64, FM 24-18. Figure 2-2. Half-wave dou...

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THE RADIO BUILDER: Toy's mouth motion by servo

http://radiobuilder.blogspot.com/2012/10/toys-mouth-motion-by-servo.html

See how do those circuits work! If you liked my blog click some ads :). Saturday, October 13, 2012. Toy's mouth motion by servo. Build Your Own Mouth Animation. Monstrous creatures are more convincing if they. Like move or talk. Talking monsters make your haunt a graveyard smash, but how do you do it? In 2002, it became difficult to find pre-assembled talking gadgets that could be modified for Halloween use. Suddenly, it became more practical - and important - to be able to build your own from scratch.

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THE RADIO BUILDER: MW_Superhet_1V_6ME8_Beam deflection tube

http://radiobuilder.blogspot.com/2012/10/mwsuperhet1v6me8beam-deflection-tube.html

See how do those circuits work! If you liked my blog click some ads :). Tuesday, October 30, 2012. MW Superhet 1V 6ME8 Beam deflection tube. Source: http:/ www.dutchforce.com/ eforum/index.php? Subscribe to: Post Comments (Atom). The most visited posts by The Radio Builder. RF Toys 27 MHz Circuits Part One. RF Toys 27 MHz Part Two. OP Amp from A to Z. Colin Mitchell Book 1-100 Transistor Circuits. Colin Mitchel Book 100 IC Circuits. Transmitter and Receiver Architectures. Printer Port Wireless Detector.

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THE RADIO BUILDER: RF Toys 27 MHz_Part Two

http://radiobuilder.blogspot.com/2010/02/rf-toys-27-mhzpart-two.html

See how do those circuits work! If you liked my blog click some ads :). Sunday, February 7, 2010. RF Toys 27 MHz Part Two. However the important reason for using a crystal is to get reliable operation. When a circuit does not have a crystal, the oscillator is said to be "voltage dependent" or "voltage controlled" and when the supply voltage drops, the frequency changes. If the frequency drifts too much, the receiver will not pick up the signal. Circuit A - Birds Nest. The tone is used by a receiver to de...

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THE RADIO BUILDER: Transmitter & Receiver Architectures

http://radiobuilder.blogspot.com/2010/03/transmitter-receiver-architectures.html

See how do those circuits work! If you liked my blog click some ads :). Monday, March 8, 2010. Transmitter and Receiver Architectures. Transmitter and Receiver Architectures:. In order to make the information signal. Eg data) pass through the air, it must be modulated. On to a carrier signal. Whose frequency is well suited to the propagation environment, conforms to the licensed operating bands, and is sufficiently stable to allow detection by a tuned receiver in the presence of interference. Key to the ...

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THE RADIO BUILDER: MW_Regen_1V_One Triode Pentode Tube_8JV8

http://radiobuilder.blogspot.com/2012/10/mwregen1vone-triode-pentode-tube8jv8.html

See how do those circuits work! If you liked my blog click some ads :). Tuesday, October 30, 2012. MW Regen 1V One Triode Pentode Tube 8JV8. Signals from the antenna (a 2-meter piece of wire) are fed to the input tank via C3. Antenna coil LA was wound on a piece of 19mm diameter plastic tubing (in this case it came from a junked clothes hanger). There's a tap at 25 turns from the cold end. Source: http:/ coolshop.dnsalias.org/projects/1tuberegen/1tregenrx.html. Subscribe to: Post Comments (Atom). HALLOWE...

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THE RADIO BUILDER: RF Toys 27 MHz Circuits_Part One

http://radiobuilder.blogspot.com/2010/02/rf-toys-27-mhz-circuitspart-one.html

See how do those circuits work! If you liked my blog click some ads :). Sunday, February 7, 2010. RF Toys 27 MHz Circuits Part One. In this discussion we cover 27MHz transmitters and receivers as found in remote control cars, aeroplanes, walkie talkies and some of the older-style garage door openers. We have provided a number of circuits so you can work out the best type for your application and these circuits will also help you understand which components are critical and which components can be changed.

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THE RADIO BUILDER: Equivalents of Russian Transistors

http://radiobuilder.blogspot.com/2010/09/equivalents-of-russian-transistors.html

See how do those circuits work! If you liked my blog click some ads :). Thursday, September 23, 2010. Equivalents of Russian Transistors. General use n-p-n silicon transistor. BCY43, BC107A, BC170, BC207A, 2N4123, MPS3709. Npn silicon transistors with high h21e ( 600). 2N5210, for example. General use n-p-n silicon transistor. Almost the same as KT315, excluding case type. HF middle-power silicon n-p-n transistor. Middle-power silicon n-p-n transistor for use on HF and VHF applications. Can't find, sorry.

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THE RADIO BUILDER: MW_Direct Conversion_1V_Pentode tube 6ME8_Beam deflection tube

http://radiobuilder.blogspot.com/2012/10/mwdirect-conversion1vpentode-tube.html

See how do those circuits work! If you liked my blog click some ads :). Tuesday, October 30, 2012. MW Direct Conversion 1V Pentode tube 6ME8 Beam deflection tube. Well, It is kind of shift to the valves or tubes. It is really amazing how those glowing glassy things can amplify and turn receivers and transmitters on! How much you can make out of one valve? Well, some valves are actually two valve in one spot like one triode and pentode packed in one glass. Subscribe to: Post Comments (Atom). Save the page...

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THE RADIO BUILDER: Colin Mitchell Book_100-200 Circuits

http://radiobuilder.blogspot.com/2010/02/colin-mitchell-book100-200-circuits.html

See how do those circuits work! If you liked my blog click some ads :). Sunday, February 7, 2010. Colin Mitchell Book 100-200 Circuits. Go to: 1 - 100 Transistor Circuits. 57 CIRCUITS as of 5-11-2009. Email Colin Mitchell: talking@tpg.com.au. This is the second half of our. E-book. It contains a further 100 circuits, with many of them containing one or more Integrated Circuits (ICs). Let's explain what we mean. Then digital came along. Digital is similar to a switch turning something on and off. And seco...