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2014.03.06 17:45

크리스탈 라디오 회로(FM 라디오 회로 등)

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   관련 게시물 :

 

   라디오 원리 

   AM/FM 라디오 구조

   광석 라디오 회로

   크리스탈 라디오 회로

                                                                     

                                                   

 

크리스탈 라디오 회로(FM 라디오 회로 등)

 http://solomonsmusic.net/FM_CrystalRadio.html

 http://scitoys.com/scitoys/scitoys/radio/homemade_radio.html

 

번역게시글: http://blog.daum.net/_blog/BlogTypeView.do?blogid=0UD9K&articleno=18606&categoryId=19&regdt=20130508214614

 

스파이더라디오만들기.pdf

 

http://mirror.enha.kr/wiki/%EB%9D%BC%EB%94%94%EC%98%A4

 

 6_8_1.gif

 

 

 

 

 

 

 

 

Circuit transmits ARINC 429 data -  11-Jul-02 Issue of EDN  The ARINC (Aeronautical Radio Inc] 429 specification defines the air transport industry's hardware and protocol standards for the transfer of digital data between avionics systems. Circuitry that can implement elements of the 429 spec is often an essential part of control and sensor electronics intended for the aviation environment.... [Design Idea by Steve Woodward, University of North Carolina, Chapel Hill, NC]
Ck-3V FM Transmitter -  Circuit design (added 02/05)
Coilless FM transmitter! -  ....
Combination-Controlled fully customizable RF remote Control -  (electronic Circuit added 03/06)

Crystal radio -  Schematic only, no circuit description

 

Crystal radio -  (circuit added 6/07)
DIY remote control based on PIC -  Control up to 8 devices by this easy constructable remote control. It can work as a radio or infrared remote control, depending on the components. Each device output can be configured to be momentary (turned on while you press the button) or latched. Latched outputs can be toggled on/off by one button per channel, or turned on and off by two buttons per channel� [Peter Jakab, Electrical Engineer, Engineer of Informatics]
DTMF Radio Remote Control -  Here is a circuit of a remote control unit which makes use of the radio frequency signals to control various electrical appliances.  This remote control unit has 4 channels which can be easily extended to 12.  ....
Easy 2 Meter Transmitter -  This project is a simple transmitter using only one crystal and will cover 145.00 to 146.00 MHz. The crystal is a 44.9333 MHz crystal for 145.500 receive, as used in the Trio (Kenwood) 2200, PYE, Motorola, Tait equipment, to name but four. The frequency of the crystal is not critical as almost any other Xtal for the 2-meter band will function.... [from Harry Lythall's website]
Economy short-wave radio -  Schematic only, no circuit description
Fibroptic transmitter -  Schematic only, no circuit description
Filter simplifies software defined radio -  3-Dec-07 Issue of EDN  A Linear Technology LTC1992 filter replaces four op amps in the signal chain of a software-defined radio.... [Design Idea by John Wendler and Ray Tremblay, Tyco Electronics, M/A-Com Wireless Systems, Lowell, MA]
FM Band Monaural Transmitter -  (Circuit design added 8/03)
FM Band PreAmplifier -  (circuit / schematic design added 6/06)
FM Beacon Transmitter 88 108 MHz -  This circuit will transmit a continuous audio tone on the FM broadcast band (88-108 MHz) which could used for remote control or security purposes. Circuit draws about30 mA from a 6-9 volt battery and can be received to about100 yards.
FM Booster -  ....
FM BroADCast Audio Transmitter -  (schematic / circuit added 6/07)
FM bug -  Schematic only, no circuit description
FM Bug-transmitter -  The circuit consists of two separate stages. The first is an audio pre-amplifier and the second is a 90MHz oscillator. The first stage is very simple to explain. It is a self-biasing common-emitter amplifier capable of amplifying minute signals picked up by the electret microphone....(electronic circuit added 04/09)
FM CCIR transmitter -  ....
FM Microphone -  A micro-transmitter is so small and sensitive, it have only 8 easy-to-get parts and can be assembled in one hour�.
FM Microphone -  Here is the super NEW miracle improved "Frequency Modulation Wireless Microphone" (BUG) with added easablilty, readability and copyability.  This was necessitated after the number of E-Mail questions posed by people who were confused by the layout of the project(s). Before proceeding with the interesting bits, please note.... [from Harry Lythall's website]
FM Oscillator -  ASCII format (Circuit design added 10/06)
FM Portable -  �(schematic added 04/05/06)
FM radio (may be used with PC) Circuit -  �....
FM Radio Microphone with Internal Loop Antenna (Area 50) -  This article began as a design guide for hyper cranial erogenic field generators, however, your primitive earth brains are completely unable to respond to erogenic fields in the 100MHz region. I personally had a brain upgrade (for purely medical purposes of course) so I am able to respond....(schematic / circuit added 4/08)
FM Radio Transmitter (David Sayles) -  This small transmitter uses a Hartley type oscillator. Normally the capacitor in the tank circuit would connect at the base of the transistor, but at VHF the base emitter capacitance of the transistor acts as a short circuit, so in effect, it still is. The coil is four turns of 18swg wire wound around a quarter inch former. The aerial tap is about one and a half turns from the supply end. Audio sensitivity is very good when used with an ECM type microphone insert.
FM Radio Transmitters with Opamp -  An low power FM Transmitter using an op-amp as the audio preamp and a single transistor as the RF amplifier�. [Designed by Kamran Ahmed]
FM Receiver Using MPF102 -  An FM regenerative receiver using a single FET and one audio amplifier IC�.
FM Remote Speaker System -  National Semiconductor Application Note  (app note added 07/08/09)
FM RF Remote Control 88-108 MHz -  1KM Range  (added 6/06)
FM Stereo Modulator -  ....
FM Stereo Transmitter -  You'll find that this is a very easy project to build. It will transmit good quality sound in the FM band ( 88, 108 mhz ). One inportant item is that the IC chip operates on 3 volts DC. The chip will get destroyed if it is operated on any voltage higher than 3.5 volts�. [Randy Linscott]
FM Synthesizer N�1 -  In order to simplify the transmitter design, we've used the new pll circuit from Motorola :the MC145170.  This PLL includes the prescaler and a serial standard bus called SPI�. [Michel P Web site]
FM Synthesizer N�2 -  This new FM transmitter is very simple and doesn't need any RF tuning. First of all ,we have used an integrated VCO: The POS150 from Mini-circuits.  This excellent RF circuit covers all the FM Band in a voltage range of 4V to 8V. The Kvco factor is very stable all over the FM band, consequently, we have applied the BF signal directly on the control voltage line coming from the PLL....
FM Telephone Bug -  Would you like to be able to amplify a phone call so everybody can hear it? Or perhaps you'd like a way to record phone calls for record-keeping purposes. If either idea sounds good to you, then you might want to build the FM Telephone Transmitter describe in this article. It's a simple, yet ingenious device that connects in series with a phone line, "reals" power from the latter, and transmits both sides of a conversation to an FM radio tuned to between 90 and 95 MHz.�. [Tony van Roon's circuit]
FM Telephone line Bug Transmitter (Aaron Cake) -  (circuit / schematic design added 7/03)
FM Telephone Transmitter -  Receive telephone conversations on any FM radio with this neat little device�. [Tony van Roon's circuit]
FM Transmitter -  A compact 2 transistor transmitter for use at VHF frequencies�. [Andy Collison]
FM Transmitter -  This simple transmitter operates from a 9V battery as shown above. I personally built this for a purpose.  This is how it happened:"members of my singing group find it difficult to handle a FM mic in Church. The choir sings in acapella form and the congregation expect us to perform well. The old FM mic system was not a perfect solution,.... [Andy Collison's circuit]
FM Transmitter -  A simple 2 transistor circuit with a Coil on the PCB....(electronic schematic added 12/08)
FM Transmitter (Aaron Cake) -  Here is the schematic, PC board pattern, and parts placement for a low powered FM transmitter. The range of the transmitter when running at 9V is about 300 feet. Running it from 12V increases the range to about 400 feet.  This transmitter should not be used as a room or telephone bug....(electronic design added 03/04/05)
FM Transmitter (radiockt6) -  ....
FM Transmitter (techlib) -  Here is a new slant on the ubiquitous FM transmitter circuit. It's an FM sender. It takes a line-level stereo signal, and puts out a mono FM signal which can be received in another part of the house. It uses base modulation, which has always worked well in the author's experience, though spread in base-collector varicap behaviour may conspire to cause �(electronic design add 6/07)
FM transmitter 0,4 W -  (design idea added 08/08/08)
FM Transmitter 1km Range 88-108 MHz -  1KM Range  (added 11/05)
FM transmitter 3 W (3W RF part) -  With good antenna (dipole placed outdoor and high) the transmitter has very good coverage range about 1500 meters, the maximal coverage range is up to 20 km�....
FM Transmitter Bug -  This small transmitter uses a hartley type oscillator. Normally the capacitor in the tank circuit would connect at the base of the transistor, but at VHF the base emitter capacitance of the transistor acts as a short circuit, so in effect, it still is. The coil.... [by David Sayles]
FM Transmitter With Crystal Referenced PLL Frequency Control Using LMX1601 ATtiny2313, AT90S2313   -  An LMX1601 Phase locked loop, a discreet  FET VCO, and an AVR micro controller combine to make a stable, easy to use monophonic FM transmitter that includes a an audio activated switch that turns the transmitter on only when its being used�(project added 6/07)
FM Transmitter-Miniature -  (circuit / schematic added 5/03)
FM Voice Transmitter -  This miniature transmitter is easy to construct and it's transmissions can be picked up on any standard FM radio.  It has a range of up to 1/4-mile (Tony van Roon's 400 meters) or more, depending on the line-of-sight, obstructions by large buildings,etc.  It is great for room monitoring, baby listening, nature research,....
FM Wireless Mike -  low power frequency modulated transmitter using two transistors. The circuit works with 9v power supply......
FM  88MHz...108MHz  Amplifier -  ....
FM/ AM Regenerative Receiver -  Two transistor receiver.....
FM3 Mods -  (electronic circuit added 7/03)
Four Channel Wireless Transmitter & Receiver -  The Wireless KT4A Transmitter and KR4A Receiver have been designed to offer moredata channels than the original KT418S2 and KR418S2 projects that were published inthe April 1999 issue of Popular Electronics magazine  (circuit added 09/06)
Four Channel Wireless Transmitter and Receiver -  The transmitter has four data inputs and the receiver has four open collector outputs.   18 pages. [free circuit from Golab.com]
Four Transistor Tracking Transmitter -  Schematic and parts list only, no circuit description included�. [Tony van Roon's circuit]
Four-way remote control uses series transmission 01/18/01 EDN-Design Ideas....A simultaneous fourway remote-control system adheres to size,  cost, and reduced-complexity   constraints and uses a series transmission to drive parallel loads (Figure 1). You can use�.PDF has several circuits, scroll down�. [Design Idea by JM Terrade, Clermont-Ferrand, France]
Frequency Agile 80m CW QRP Transmitter -  amateur radio construction projects�. [from Peter Parker's website]

 

 

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    디케 2014.03.07 15:56
    http://tonebrew.tistory.com/m/994

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