Radio (RF) Frequency Schematics

[jonas ribeiro]

http://www.hobbyprojects.com/quick_circuits_reference/radio_frequency_schematics.html

• 10.7MHz FM detector
• 10W HF linear amplifier
• 136 kHz direct conversion receiver
• 14MHz SSB 10mW Transceiver
• 175KHz inductive pulse receiver (PDF)
• 200-400 MHz voltage controlled oscillator
• 222 MHz Transverter
• 2M - 20M transverter
• 2MHz RF Oscillator
• 2N2222 40 Meter CW/DSB Transceiver
• 30m direct conversion receiver
• 30M PSK31 Transceiver
• 3W FM Transmitter
• 3W HF QRP linear amplifier
• 40m direct conversion receiver
• 42 Mc Band to 88 Mc Band (retrofit converter) Project
• 45-860MHz Radio receiver based on UV916-tuner
• 49MHz walkie-talkie
• 5 watt, 80 meter QRP CW Transceiver
• 500mW HF linear amplifier
• 500W HF linear amplifier
• 50-150MHz Overtone Oscillator
• 50MHz Assistant (Preamp & Power Amp.)
• 50MHz Converter
• 56K RF Modem
• 73MHz remote controller hallogen light
• 7MHz SSB Transceiver
• 80 Meter CW ARDF receiver
• 80M ARDF direction finder
• 80m direct conversion receiver
• Active antenna with gain
• Advanced VHF power meter
• AM BCB radio receiver
• AM Broadcast Band Active Antenna
• AM Radio
• AM receiver for aircraft communications
• AM to FM conveter
• AM/FM/SW active antenna
• AM-Receiver for Aircraft communication (118.250MHz)
• Assorted RF circuits
• Basic RF oscillator
• Bug detector
• Bug detector
• Build your own VLF Receiver
• Building a Simple LF Exciter
• CB (27MHz citizens band) 2.5W transmitter
• CB (27MHz citizens band) receiver
• Class B series modulator
• CMOS RF PLL sythesizer
• Convert 2m VHF FM PMR transceiver Motorola Radius M110 into an amateur radio
• Crystal radio
• Crystal radio
• Crystal radio circuits including diode performance comparison
• CW RECEIVER 40/80 meter CW receiver
• Demodulator Schematic/Design
• Digital Automatic Gain Control (AGC)
• Direction finder system
• DSBSC (Double Side Band Supressed Carrier)
• Economoy short-wave radio
• External antenna for the GPS-38, Magellan 2000, or Eagle Explorer GPS receivers
• FM Bug
• Four channel RF remote control
• Four Channel Wireless Transmitter and Receiver
• Frequency Synthesizer
• Generic VHF power amplifier
• Ham Band VFO
• Harmonic oscillator
• HF Signal generator
• How to Build a 300MHz AM, RF Remote Control System
• Huge LED Antenna Direction Display (part 1)
• Huge LED Antenna Direction Display (part 2)
• ICOM CI-V interface with RS232 RTS to PTT
• Improved CMOS RF PLL sythesizer
• Improved FM Stereo Modulator
• Linearized RF detector
• One transistor FM receiver
• One transistor regenerative receiver
• One Watt 2.45 GHz Linear Amplifier
• Op-Amp Radio
• Phased lock loop schematic
• Phasing SSB exciter
• PLL FM transmitter
• PLL synthesizing oscillator (1)
• PLL synthesizing oscillator (2)
• PLL synthesizing oscillator (3)
• Popcorn direct conversion receiver
• Q-multiplier
• Radio Control Electric Switch
• Receiver
• Receiver building blocks
• Regenerative shortwave receiver
• RF front-end for triple conversion GPS receiver
• RF Modem Robotics Project
• RF Sniffer <.5 to >500 MHz
• RTTY terminal unit
• RX3302 receiver module schematic
• Shortwave conveter for scanners
• Simple AM Radio Receiver & Amplifier
• Simple Op-Amp Radio
• Simple wireless radio data link
• Smooth Tone Clickless CW Sidetone Generator
• SOP direct conversion receiver
• SOP receiver (PDF)
• Superregenerative 27MHz receiver
• Synthesized HF receiver
• TBA120 narrowband FM receiver
• TDA7000 receiver
• The MRX-40 Mini Receiver
• Toroidal coil RF shortwave receiver
• TRF AM Receiver circuit
• Two-band radio
• UHF - 100W Transistorized amplifier
• UHF oscillator
• Variety of receiver converter projects
• VFO from 2001 ARRL Handbook, page 14.20
• VFO from 2001 ARRL Handbook, page 17.74
• Vibrating pocket bug detector
• VLF radio receiver schematic
• WLW 500KW Transmitter Schematic
• Yaesu band decoder schematic
• Yaesu FT-736R doppler compensation
• ZN414 receivers