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3-25pF Variable Capacitor (Trimmer)
Small trimmer capacitor for all types of RF projects including FM transmitters, FM receivers, oscillators, PLL modules, etc. Inner trimer adjustment mechanism is made of metal and long lasting service is guaranteed. Trimmer dimensions are 6 mm x 5 mm (W x H). |
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3-28pF Variable Capacitor (Trimmer)
Small trimmer capacitor for all types of RF projects including FM transmitters, FM receivers, oscillators, PLL modules, etc. Inner trimer adjustment mechanism is made of metal and long lasting service is guaranteed. Trimmer dimensions are 6 mm x 5 mm (W x H). |
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6-50pF Variable Capacitor (Trimmer)
Small trimmer capacitor for all types of RF projects including FM transmitters, FM receivers, oscillators, PLL modules, etc. Inner trimer adjustment mechanism is made of metal and long lasting service is guaranteed. Trimmer dimensions are 6 mm x 5 mm (W x H). |
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7.6 MHz Crystal
Crystal oscillator for BH1414, BH1415, BH1416, BH1417 and BH1418 Stereo PLL transmitters.
 Frequency: 7.600 MHz
Case: HC49/US |
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BH1417 Stereo PLL FM Transmitter IC
ROHM's breakthrough wireless IC series incorporates a stereo modulator, frequency synthesizer and high frequency FM transmitter in one IC. ROHM's industry-first wireless IC series not only cuts board space by more than half, it opens up opportunities as unlimited as the designer's imagination. ROHM's innovative chip series enables portable electronic audio sources such as MP3 players, portable CD players, PDAs, video game players, cell phones, and laptop PCs to be connected to a more powerful audio system without cables or even line of sight technology. The features of numerous integrated functional blocks such as a stereo modulator, phase lock loop frequency synthesizer IC, RF oscillator circuitry and various HF circuits are all incorporated on a single BiCMOS IC. External parts count as well as board real estate is slashed. Performance is also increased with a signal-to-noise ratio of better than 70dB.
Features
Built-in pre-emphasis, audio limiter, audio filter circuit
Built-in PLL frequency synthesizer integrated for stable transmission frequency
Built-in Stereo Encoder
Built-in RF Oscillator
Built-in RF Output Buffer
Free Schematics
Stereo PLL FM Transmitter schematic
Stereo Encoder schematic
Specifications
Voltage Supply: 4-6V
Transmission frequency: 87.7 - 88.9MHz, 106.7 - 107.9MHz, 200kHz steps
Separation: 40dB
SOIC22
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BH1415 - Stereo PLL FM Transmitter
ROHM's breakthrough wireless IC series incorporates a stereo modulator, frequency synthesizer and high frequency FM transmitter in one IC. ROHM's industry-first wireless IC series not only cuts board space by more than half, it opens up opportunities as unlimited as the designer's imagination. ROHM's innovative chip series enables portable electronic audio sources such as MP3 players, portable CD players, PDAs, video game players, cell phones, and laptop PCs to be connected to a more powerful audio system without cables or even line of sight technology. The features of numerous integrated functional blocks such as a stereo modulator, phase lock loop frequency synthesizer IC, RF oscillator circuitry and various HF circuits are all incorporated on a single BiCMOS IC. External parts count as well as board real estate is slashed. Performance is also increased with a signal-to-noise ratio of better than 70dB.
BH1415F Features
Built-in pre-emphasis, audio limiter, audio filter circuit
Built-in PLL frequency synthesizer integrated for stable transmission frequency
Built-in Stereo Encoder
Built-in RF Oscillator
Built-in RF Output Buffer
Specifications
Voltage Supply: 4-6V
Transmission frequency: 70 - 120MHz 100KHz Steps
Separation: 40dB
SOIC22
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HT12E Holtek Encoder 12-Bit (for RF Remote Control)
HT12 encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding information which consists of N address bits and 12N data bits. Each address / data input can be set to one of the two logic states. The programmed addresses/data are transmitted together with the header bits via an RF or an infrared transmission medium upon receipt of a trigger signal. The capability to select a TE trigger on the HT12E or a DATA trigger on the HT12A further enhances the application flexibility of the 212 series of encoders. The HT12A additionally provides a 38kHz carrier for infrared systems.
Features
Operating voltage: 2.4V - 12V
Case: HT12A/E: 18-pin DIP
Low power and high noise immunity CMOS technology
Low standby current: 0.1A (typ.) at VDD=5V
HT12A with a 38kHz carrier for infrared transmission medium
Minimum transmission word
Four words for the HT12E
One word for the HT12A
Built-in oscillator needs only 5% resistor
Data code has positive polarity
Minimal external components
Applications
RF Remote Control
Burglar alarm system
Smoke and fire alarm system
Garage door controllers
Car door controllers
Car alarm system
Security system
Cordless telephones
Other remote control systems |
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BH1415 Stereo Encoder (parts, no PCB)
This is the latest MPX BH1415 Stereo Encoder that includes a lot of great features in one small package. The heart of Stereo Encoder is a new BH1415 chip from RHOM that includes components that were previously only available in expensive broadcast quality stereo encoders. Connect this stereo encoder to any mono FM transmitter to convert it into Hi-Fi stereo FM transmitter.
Circuit features built-in; crystal oscillator based stereo audio encoding, pre-emphasis for reducing transmission noise, limiter so that the music can be transmitted at the same audio level and 15KHz brickwall low pass filter that blocks any audio signals above 15KHz to prevent any RF interference.
For limited time we include SOIC 28 to DIL adapter free of charge.
Specifications
Crystal based stereo encoder
15KHz brickwall filter
Audio Limiter
Pre-emphasis
Excellent channel separation
Component List
1x BH1415 - Stereo PLL Transmitter IC
1x 7.6 MHz Crystal
1x 78L05 Voltage Regulator
1x 10K Resistor
3x 10uF Capacitor
2x 1uF Capacitor
2x 2.2nF Capacitor
1x 1nF Capacitor
2x 150pF Capacitor
2x 27pF Capacitor |
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TDA7000 FM Receiver (Parts)
This simple one chip FM receiver / TV tuner will allow you to receive frequencies from 70 up to 120MHz. With this small receiver it is possible to pick up TV stations, entire 88 - 108MHz FM band, aircraft conversation and many other private transmissions. It is a perfect companion to any FM Transmitter especially if FM band in your area is very crowded. TDA7000 receiver offers very good sensitivity therefore it will even allow you to pickup weaker signals that cannot be heard on conventional FM receivers. A neat feature of presented TDA7000 FM receiver is a voltage controlled oscillator similar to TV tuners that are used in television sets. Frequency is tuned by varying the input voltage to the oscillator. The advantage of this type of oscillator is that you can use regular 100K potentiometer to precisely tune to a given broadcast. Tuning can be performed much quicker and precisely than by using a trimmer (variable capacitor). Trimmers will also shift the frequency as you touch them where potentiometer will not. Trimmer also needs to be placed on receiver's PCB to minimize the stray capacitance where potentiometer can be conveniently placed anywhere you want because it will not be affected by any external capacitance.
Click here to view TDA7000 FM receiver schematic & description
Component List
1x TDA7000
1x 18-PIN IC Socket
1x 5.5T Variable Coil
1x MV2105 - Varicap Diode
1x 100K Potentiometer
1x 100K Resistor
1x 22K Resistor
1x 10K Resistor
3x 100nF Capacitor
1x 22nF Capacitor
1x 10nF Capacitor
2x 3.3nF Capacitor
1x 2.2nF Capacitor
1x 1nF Capacitor
2x 330pF Capacitor
2x 220pF Capacitor
2x 180pF Capacitor
1x 150pF Capacitor |
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60MHz Frequency Meter / Counter Kit - Blue Backlight LCD
60MHz Frequency Meter / Counter kit measures frequency from 10Hz to 60MHz with 10Hz resolution. It is extremely useful bench test equipment for testing and measuring frequency of oscillators, transmitters, radio receivers, function generators, crystals, etc. Counter provides exceptionally stable readings and has excellent input sensitivity thanks to onboard amplifier and TTL converter. It can be even used for measuring weak signals from crystal oscillators. With the addition of simple prescaller it is possible to measure frequency up to 1GHz or more. Counter's measuring range has now been extended form 50MHz up to 60MHz.
Click here for more information and schematic
Specifications
Voltage Supply: 7V - 16V
Power Consumption: 80mA with LCD backlight
Frequency Measurement: 10Hz - 60MHz
Measurement Resolution: 10Hz
Component List
1x 16 x 2 LCD Display with Blue Backlight
1x PIC16F628A Programmed Microcontroller
1x PCB
1x 18-DIP IC Socket
1x 4.000MHz Crystal
1x LM7805 5V Voltage Regulator
1x 1 x 16 Gold Plated Female Header (for PCB)
1x 1 x 16 Gold Plated Male Header (for LCD)
2x 1 x 2 Gold Plated Male Header (for LCD)
1x BF199
1x 10uH Inductor
1x 10K Trimmer
1x 10K 1% Metal Film Resistor
2x 470 1% Metal Film Resistor
1x 33 1% Metal Film Resistor
1x 100uF Panasonic Capacitor
2x 100nF Multilayer Ceramic Capacitor
2x 10pF Ceramic Capacitor
1x Manual with Schematic
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60MHz Frequency Meter / Counter Kit
60MHz Frequency Meter / Counter kit measures frequency from 10Hz to 60MHz with 10Hz resolution. It is extremely useful bench test equipment for testing and measuring frequency of oscillators, transmitters, radio receivers, function generators, crystals, etc. Counter provides exceptionally stable readings and has excellent input sensitivity thanks to onboard amplifier and TTL converter. It can be even used for measuring weak signals from crystal oscillators. With the addition of simple prescaller it is possible to measure frequency up to 1GHz or more. Counter's measuring range has now been extended form 50MHz up to 60MHz.
Click here for more information and schematic
Specifications
Voltage Supply: 7V - 16V
Power Consumption: 80mA with LCD backlight
Frequency Measurement: 10Hz - 60MHz
Measurement Resolution: 10Hz
Component List
1x 16 x 2 LCD Display with Green Backlight
1x PIC16F628A Programmed Microcontroller
1x PCB
1x 18-DIP IC Socket
1x 4.000MHz Crystal
1x LM7805 5V Voltage Regulator
1x 1 x 16 Gold Plated Female Header (for PCB)
1x 1 x 16 Gold Plated Male Header (for LCD)
2x 1 x 2 Gold Plated Male Header (for LCD)
1x BF199
1x 10uH Inductor
1x 10K Trimmer
1x 10K 1% Metal Film Resistor
2x 470 1% Metal Film Resistor
1x 33 1% Metal Film Resistor
1x 100uF Panasonic Capacitor
2x 100nF Multilayer Ceramic Capacitor
2x 10pF Ceramic Capacitor
1x Manual with Schematic
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BA1404 HI-FI Stereo FM Transmitter - Special Edition Kit
Be 'On Air' with your own radio station! BA1404 HI-FI Stereo FM Transmitter - Special Edition Kit is an exciting transmitter that will broadcast high quality stereo signal in 88MHz - 108MHz FM band. It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground. Add 500mW FM / VHF Transmitter Amplifier / Booster for even longer range.
Special Edition BA1404 HI-FI Stereo FM Transmitter Kit includes premium components with audio grade gold capacitors, 1% Metal Film Resistors and quality PCB with Red Solder Mask and Plated-Through Holes. The kit is based on the popular BA1404 stereo broadcaster IC which contains all the complex circuitry for generating the stereo FM signal. 38 KHz crystal provides a rock solid stability of sub-carrier for stereo signal.
Specifications
Voltage Supply: 1.5 - 3V DC Input (Single or Two AA/AAA batteries)
Frequency: 88MHz - 108MHz
Audio Input: Stereo
PCB Dimensions: 49mm x 32mm (W x H)
Component List
1x BA1404 Stereo FM Transmitter IC
1x PCB with Red Solder Mask and Plated-Through Holes
1x 38KHz Crystal Oscillator
1x 5.5T Variable Precision RF Coil
1x 10uH Inductor
4x 10uF/50V Gold Audio Capacitors
4x 1nF Ceramic Capacitors
2x 1nF Mylar Capacitors
1x 220pF Ceramic Capacitor
5x 10pF Ceramic Capacitors
2x 47K 1% Metal Film Resistors
2x 27K 1% Metal Film Resistors
1x 150K 1% Metal Film Resistor
1x 5.6K 1% Metal Film Resistor
1x 270 1% Metal Film Resistor
1x Instructions |
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4-Channel 433MHz Wireless RF Remote Control (Transmitter + Receiver)
4 Channel RF Remote Transmitter and Receiver allows to remotely control four appliances. RF Remote Control provides 4 momentary outputs that can be wired to relays and control home appliances, lights, motors, light dimmers, robotic devices, RC cars, computer, etc. RF transmitter provides up to 150m range. Selection of custom address codes allows to operate more than one remote control system in the same area or to control one receiver with multiple transmitters. If required momentary outputs can be converted to toggle with low cost digital 4013 IC. 12V (27A) alkaline battery is included.
Specifications
4 Momentary Outputs
150m Transmission Range
Rock-solid oscillator provides reliable operation
Valid transmission LED status through VT connection
High noise immunity
Standard header connection (breadboard compatible)
Selection of custom address codes allows to operate more than one unit in the same area or controlling the same receiver with multiple remotes
RF Transmitter Specifications
Voltage Supply: 12V (Included 27A Alkaline Battery)
Transmission Frequency: 433MHz
Transmission Range: 150m
Dimensions: 62 mm x 38 mm x 14 mm
RF Receiver Specifications
Voltage Supply: 5V
Transmission Frequency: 433MHz
Output Mode: Momentary
Power Consumption: 5 mA
Receiving Sensitivity: -101 dbm
Output PINs: GND, 5V, D0, D1, D2, D3, VT (Status LED)
Dimensions: 41 mm x 22 mm x 6 mm |
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2N3866 - 5W FM / VHF / UHF Transistor
The 2N3866 is a silicon NPN transistor in a TO39 type package designed for 5W FM / VHF / UHF amplifier, frequency multiplier, or oscillator applications in military and industrial equipment. Suitable for use as output driver or pre-driver stages, in VHF and UHF equipment.
Output RF Power: 5W |
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2N4427 - 1W FM / VHF / UHF Transistor
The 2N4427 is a silicon NPN transistor in a TO39 type package designed for 1W FM / VHF / UHF amplifier, frequency multiplier, or oscillator applications in military and industrial equipment. Suitable for use as output driver or pre-driver stages, in VHF and UHF equipment.
Output RF Power: 1W |
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3.5 Turns RF Air Coil Inductor
RF air coil inductor perfect for transmitters, receivers, TV receivers, oscillators, RF filters, etc.
Specification: 3.5 Turns
Dimensions: 3.5mm x 0.7mm |
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