- 1 Watt 2.3 GHz RF Amplifier Using a MRF2001
- 1.5 W RF Power Amplifier type class-C
- 10 meter (28MHz) band RF amplifier
- 10 MHz WWV Receiver
- 10.7MHz FM detector
- 10W HF linear amplifier
- 136 kHz direct conversion receiver
- 14MHz SSB 10mW Transceiver
- 15M CW Transceiver Design
- 160m mini portable End Fed Half Wave Tuner - MkII
- 175KHz inductive pulse receiver (PDF)
- 18 dB LT1253 DDS Amplifier
- 2.3 GHz Power Amplifiers
- 20 Meter CW Transceiver
- 20 meters CW QRP Transceiver (PDF)
- 20 Watt GaAaFET Power on 2.3 GHz
- 200-400 MHz voltage controlled oscillator (PDF)
- 20dB VHF Amplifier
- 222 MHz Transverter
- 23 dB Bipolar DDS Amplifier
- 2304 and 3456 MHz Power Amplifiers
- 27MHz transmitter
- 2M - 20M transverter
- 2m (144MHz) Dual Gate FET Low Noise Amplifier
- 2N2222 40 Meter CW/DSB Transceiver
- 30 Meter, Discrete Component CW Transceiver Built Manhattan-style
- 30 W Digital Wattmeter for RF (0-500MHz)
- 30 watt FM linear amplifier
- 300 baud RF modem circuit schematic
- 30M Direct Conversion Receiver Project
- 30M PSK31 Transceiver
- 3W HF QRP linear amplifier
- 4 channel 433MHz remote control transmitter / receiver based on SM5162 and SM5172 chips
- 40 Meter Band Direct Conversion experimental receiver
- 40 Meter Popcorn Superhet Receiver
- 40 Segment LED S-Meter
- 40 to 6 Meter "No Tune" Transverter
- 40m band direct conversion receiver
- 42 Mc Band to 88 Mc Band (retrofit converter) Project
- 450-2000KHz AM receiver (ZN414)
- 455 Khz MF to AF converter used for DRM reception in a Yaesu FRG-100 receiver
- 45-860MHz Radio receiver based on UV916-tuner
- 49MHz walkie-talkie
- 5 tubes SSB QRP Transceiver for 20m Ham band
- 5 watt, 80 meter QRP CW Transceiver
- 50 MHz Receiver based on MC3372
- 500mW HF linear amplifier
- 500W HF linear amplifier
- 50MHz converter project based on a NE602/SA602/NE612
- 50MHz RF Power Amplifier using BFG97
- 56K RF Modem
- 6 Meter SSB transceiver
- 60-120MHz FM receiver with AFC
- 60W Linear amplifier using IRF840 power MOSFET
- 60W RF linear amplifier using IRF840
- 6m SSB & CW QRP transceiver
- 73MHz remote controller hallogen light
- 75 Meter QRP SSB Transceiver
- 78-80 MHz Superfast Scanner using a DDS (direct digital sythesizer)
- 7MHz SSB Transceiver
- 80 Meter CW ARDF receiver
- 80 meter direct conversion receiver
- 80m band direct conversion receiver
- 80m SSB & CW QRP superhet transceiver
- A compact L-match ATU for portable use
- A Multimode Phasing Exciter for 1 to 500 MHz from ARRL (PDF)
- Active antenna 1 to 20dB, 1-30 MHz range
- Active Antenna AA-7 HF/VHF/UHF, 3-3000MHz
- Active Antenna Experiments
- Active Antenna for AM-FM-SW
- Advanced VHF power meter (PDF)
- Aircraft Radio Communications Receiver
- AM BCB radio receiver
- AM receiver circuit diagram
- AM receiver for aircraft communications
- AM Short Wave Broadcast Receiver circuit diagram
- AM to FM conveter
- AM/FM/SW active antenna
- AM-Receiver for Aircraft communication (118.250MHz)
- An end-fed antenna, L-match coupler and resistive bridge for HF
- An Inexpensive Tone Encoder
- Assorted RF circuits
- Audible S-Meter
- Aviation band receiver
- Basic 10GHz / 24GHz gunplexer / gunn diode control circuit (PDF)
- Basic RF oscillator
- Basic Vox Circuit
- Bi-Directional 2.4 GHz One Watt Amplifier
- Bi-Directional 900Mhz One Watt Amplifier
- Bipolar transistor RF mixer
- Bootstrapping a Phase Locked Loop for Better Performance
- Broadcast-Band RF Amplifier
- Bug detector / countersurveillance monitor
- Bug detector with beep using 7413 or 74LS13
- Build a COS Detector to detect the presence of a carrier on a receiver
- Build a good GaAs FET preamp for 2 meters, 222MHz or 440MHz
- Car radio tunes the amateur bands
- Cascode 7 Experimental Receiver
- Cascode Hybrid-Based WWV Receiver for 5 MHz
- CB (27MHz citizens band) 2.5W transmitter
- CB (27MHz citizens band) receiver
- Class B series modulator
- Class E Power Amplifier Design (136KHz operating frequency)
- CMOS RF PLL sythesizer
- Compact 20 - A 14 MHz Direct Conversion Receiver
- Convert 2m VHF FM PMR transceiver Motorola Radius M110 into an amateur radio
- Converter to Hear Amateurs on your FM Radio
- Converter to yune six metres on your two metre receiver
- COR Carrier Delay timer / Hang Timer
- Crystal Radio
- Crystal radio circuits including diode performance comparison
- DC40 - 40M Direct Conversion receiver
- Deluxe Direct Conversion Reciever
- Demodulator Schematic/Design using Gilbert Cell Mixer
- Digitally tuned radio board to create an embedded FM radio controlled by a Mega128
- Direct Crystal radio receiver examples
- Direction finder system
- Dopler RDF (radio direction finder) circuit
- Electroluminescent Receiver Kit includes circuit diagram
- Electronic Eavesdropping Devices Detector
- Electronic Eavesdropping Devices Detector (bug detector)
- Experimental DSB/CW QRP rig for 20 and 40 meter bands (PDF)
- External antenna for the GPS-38, Magellan 2000, or Eagle Explorer GPS receivers
- FM radio active antenna
- Four channel RF remote control
- Four Channel Wireless Transmitter and Receiver using RF modules (PDF)
- Galvanic isolated CAT & audio interface for amateur radio
- Generic VHF power amplifier
- GPS jammer
- Harmonic oscillator
- HF 10 watt amplifier for 18MHz using a 2SC1969/2SC1944 transistor
- HF/6M Antenna Tuner Preselector and Antenna Switcher
- HF/VHF mini portable antenna tuner
- HF/VHF portable antenna tuner
- High quality AM through your FM stereo
- High-Performance Direct-Conversion Receivers from ARRL (PDF)
- High-Performance, Single-Signal Direct-Conversion Receivers for ARRL (PDF)
- Homebrew 20m CW Transceiver
- Homebrew 30m CW Transceiver
- Homebrew 40m CW Transceiver
- Homebrew 6m DSB Transceiver
- Homebrew 6m SSB/CW Transceiver
- How to Build a 300MHz AM, RF Remote Control System
- ICOM CI-V interface with RS232 RTS to PTT
- Improved AM-Receiver for Aircraft communication
- Improved CMOS RF PLL sythesizer
- Improved FM Stereo Modulator
- inexpensive high speed microwave data link using an Alpha Gunnplexer for 10 Mbps data rate
- Junk Box NDB Low Pass Filter
- K8IQY's Original 2N2/40 CW Transceiver Rig
- Kenwood TR-7950 manual & schematics (PDF)
- KL 400 RF linear amplifier
- LF to HF Converter
- Linear FM 50 watt amplifier with BLY90
- Linear FM 50Watt with BLY90
- Low Frequency Circulator/Isolator Uses No Ferrite or Magnet (PDF)
- Low Power RF ID Transponder (PDF)
- MC13136 based narrow band receiver
- Medium Frequency TRF Receiver
- MF and HF Receive Antenna Splitter
- Morse Code Beacon Keyer
- Multiplier Generates Odd Harmonics (PDF)
- MW Enhanced Crystal Receiver using 741 IC
- MW/SW Radio receiver
- Novel crystal set requires no antenna, earth
- One transistor FM receiver
- One transistor regenerative receiver
- One Watt 2.45 GHz Linear Amplifier using RF Micro Devices RF2126
- One watt class-C RF amplifier (PDF)
- Op Amp Radio
- Op-amp based radio receiver
- Op-Amp Radio
- Phase Locking and Tuning
- Phase-Locking ULNs for Optimum Performance
- Phasing SSB exciter
- PLL synthesized FM radio that can decode DTMF
- Pocket sized 20m (30m) CW QRP transceiver
- Popcorn Direct Conversion Main Frame
- PSK Transceiver - Unique transceiver design does not use a SSB transmitter
- Q-multiplier
- QRP - Circuits for measuring RF Voltage, RF Current, RF Power, SWR
- QRP Antenna Tuner
- R2T2 Haywire Home Station
- Radio Wave Alarm
- Receive Loop Preamplifier for LF reception
- Receiver based on NE602
- Receiver building blocks
- Regenerative receiver for the AM broadcast band using two transistors
- Regenerative Short Wave Radio
- Regenerative shortwave receiver
- RF Actuated Keying Monitor
- RF front-end for triple conversion GPS receiver (PDF)
- RF Isolator Uses Differential Amplifiers
- RF noise bridge for HF
- RF Power Amplifier Module using Toshiba S-AV10H
- RF Power meter / dummy load
- RF preamp circuit diagrams
- RF Sniffer under 0.5MHz to above 500MHz
- RTTY terminal unit
- RX3302 receiver module schematic
- SA602, SA612 RF Mixer
- SCA Adapter - listen to advertisement free background music on FM broadcast radio
- SCA Subcarrier Demodulator for FM broadcast stations
- Send Morse on your VHF Rig
- Sensitive LW/MW/SW Shortwave general coverage receiver
- Simple 40 meters CW QRP Transceiver (PDF)
- Simple CW identifier for a FM repeater (PDF)
- Simple Dual Band SSB Transceiver (20/40 meters)
- Simple RIT circuit based on a 2N7000 FET
- Simple wireless radio data link
- Smooth Tone Clickless CW Sidetone Generator
- Some experiments with active or voltage probe antennas (VPA)
- SOP direct conversion receiver
- SOP receiver (PDF)
- SSB linear amplifier made from a bunch of 2N2218 transistors
- SSB Receiver / Exciter and Linear amp
- Stacked Torroid VFO Experiments 2008
- Subcarrier adapter to listen to hidden subcarrier signals on FM radio
- Super 80 ultra-simple SSB receiver for 3.5 MHz a basic superhet
- Super improved AM-Receiver for Aircraft
- Super Scanner 45-860MHz with 0.01Hz stepsize
- Superior TV-tuner receiver 45-860MHz in 2500Hz step
- Superregenerative 27MHz receiver
- SW30+ 30 Meter CW Transceiver
- Switching Diode Frequency Doublers (PDF)
- SWR bridge covering HF to VHF
- Synthesized HF receiver
- TBA120 narrowband FM receiver
- TDA7000 receiver
- The MRX-40 Mini Receiver (PDF)
- TR1001 868.35 MHz Hybrid transceiver schematic
- Two Diode Odd-Order Multiplier
- Two Transistor Reflex Radio
- TX Module Combiners (copied from commercial circuits)
- UHF Preamplifier covers 450MHz - 800MHz based on MPSH10 / BF180 / BCY90
- Universal USB digimode interface supports CAT (Yaesu), CI/V (Icom) and RS-232 (Kenwood) units (PDF)
- USB / CAT (CI-V) adapter tested with FT-8900, FTB-9800, VX-7R, VX-7, FT-817 and IC-706MkIIG
- Variable Bandwidth CW Filter
- Variety of receiver converter projects
- VFO from 2001 ARRL Handbook, page 14.20
- VFO from 2001 ARRL Handbook, page 17.74
- VHF 6 Meterband RF amplifier
- VHF receiver converterer
- VLF radio receiver schematic
- VLF Upconverter for Shortwave Receiver
- Wave Bubble - A design for a self-tuning portable RF jammer
- Wave Bubble self-tuning portable RF jammer
- Wee Willy 75 Meter DSB Transceiver Project
- Wideband SWR meter
- Wideband VHF/UHF/SHF 22dB RF preamp with MAR-6 or MAR-8 (MSA-0885)
- WLW 500KW Transmitter Schematic
- Yaesu band decoder schematic
- Yaesu FT-736R doppler compensation
- ZN414 receivers
About Me
- B.Tech Live projects for ECE,EEE,EIE,ICE
- This site will be verymuch useful for students studying electronics,Electrical,Instrumentation engineering. The site showcases many links from around the web with good stuff related to electronics. Electronics hobbyists can find this a good place to start.Many simple circuits that you can build from scratch available on this site.Engineering Students of JNTU,AU,KU,OU,SRM,NU can be benifitted with this resource. Any concerns please email me technokishore@gmail.com
Radio frequency projects
Posted By B.Tech Live projects for ECE,EEE,EIE,ICE
Sunday, April 4, 2010
Subscribe to:
Post Comments (Atom)
Followers
Polite Notice
B.tech Live projects is the platform for everyone who are studying Electronics Engineering. Note that all these links are external and we cannot provide support on the circuits or offer any guarantees to their accuracy. Also note that some of the circuits are illegal to operate in most countries, please check your local regulatory bodies if concerned. Other circuits are dangerous to construct and should not be attempted by the inexperienced.
No comments:
Post a Comment