مدارات رادیویی و فرستنده و گیرنده
Shortwave conveter for scanners
Toroidal coil RF shortwave receiver
CW RECEIVER 40/80 meter CW receiver
WLW 500KW Transmitter Schematic
AM-Receiver for Aircraft communication (118.250MHz)
AM receiver for aircraft communications
45-860MHz Radio receiver based on UV916-tuner
Four channel RF remote control
Simple wireless radio data link
RX3302 receiver module schematic
Superregenerative 27MHz receiver
Convert 2m VHF FM PMR transceiver Motorola Radius M110
into an amateur radio
UHF - 100W Transistorized amplifier
RF front-end for triple conversion GPS receiver
Improved CMOS RF PLL sythesizer
One transistor regenerative receiver
Car radio tunes the Amateur Bands
Crystal set that requires no antenna
80m Direct Conversion Receiver
A compact L-match ATU for portable use
Morse Adaptor for your VHF/UHF FM rig
An end-fed antenna, L-match coupler and resistive bridge
for HF
AM Broadcast Band Regenerative Receiver
Hear Amateurs on your Shortwave Radio!
Compact 20 14 MHz direct conversion receiver
Hear Amateurs on your FM Radio!
Super 80 ultra-simple SSB receiver for 3.5 MHz
L-Band PHEMT LNA for GPS, Inmarsat etc
External antenna for the GPS-38, Magellan 2000, or Eagle
Explorer GPS receivers
AM Broadcast Band Active Antenna
Simple AM Radio Receiver & Amplifier
175KHz inductive pulse receiver (PDF)
200-400 MHz voltage controlled oscillator
Regenerative shortwave receiver
DSBSC (Double Side Band Supressed Carrier)
Digital Automatic Gain Control (AGC)
Four Channel Wireless Transmitter and Receiver
PLL synthesizing oscillator (1)
PLL synthesizing oscillator (2)
PLL synthesizing oscillator (3)
2N2222 40 Meter CW/DSB Transceiver
Yaesu FT-736R doppler compensation
SOP direct conversion receiver
30m direct conversion receiver
Popcorn direct conversion receiver
40m direct conversion receiver
80m direct conversion receiver
Huge LED Antenna Direction Display (part 1)
Huge LED Antenna Direction Display (part 2)
136 kHz direct conversion receiver
One Watt 2.45 GHz Linear Amplifier
VFO from 2001 ARRL Handbook, page 17.74
VFO from 2001 ARRL Handbook, page 14.20
23cm Wide-Band FM data transceiver for high-speed
packet-radio
5 watt, 80 meter QRP CW Transceiver
How to Build a 300MHz AM, RF Remote Control System
ICOM CI-V interface with RS232 RTS to PTT
Smooth Tone Clickless CW Sidetone Generator
Variety of receiver converter projects
42 Mc Band to 88 Mc Band (retrofit converter) Project
Crystal radio circuits including diode performance
comparison
50MHz Assistant (Preamp & Power Amp.)
4W FM Transmitter
FM Transmitter Bug
TV Signal amplifier
Small Radio Transmitter
Electronic Eavesdropping Devices Detector
AM Receiver
Radio Shack Special
ZN414 Portable AM Receiver
20dB VHF Amplifier
Linear FM 30Watt
AM Transmitter
2 Transistor FM Voice Transmitter
Linear FM 50Watt with BLY90
15W Fm-transmitter
Video signal amplifier
3W FM Transmitter
CB receiver
CB transmitter
Transmitter FM 45W with valve
FM radio
4W FM Transmitter
Active FM antena
A small FM transmitter (SMD)
Nostalgic Crystal Radio
Medium range transmitter
