40m transmitter circuit

Dual Band Dipole 20-40m - A simple dipole built for two-band operation can be used for portable use and operate 20 and 40 meter bands

Phased 40M Wire Verticals - Experiments with phased wire vertical antennas on 40 meters at VA7ST

Rotatable 40M Dipole - The Linear-Loaded "Crappie" 40M Rotatable Dipole A Short 40 Antenna You Can Build for $50 or Less by VA7ST VE7ASK

40M Twin Half-Square Array - 40 meters elevated vertical antenna array at VA7ST

End Fed Half Wave Antenna Coupler - A 40m through 17m Mini End Fed Half Wave Antenna Coupler by Steve Yates - AA5TB

From Transmitter to Antenna - A collection of articles on the subject of impedance, impedance matching and high-frequency power transmission by G3YNH

Beverages on 40 Meters - Gary Breed, K9AY experience with beverages on 40 meters

Worked All Ireland Awards - Sponsored and managed by the Galway VHF Group on behalf of the Irish Radio Transmitters Society

Wire Harness Assemblies - Printed Circuit Board, Custom Overmold Cable Assembly, Box Build, System Integration, Sheet Metal

A D-ATV transmitter project - Build this simple and cheap 70 MHz Exciter and start to transmit Digital Television by Jean-François Fourcadier, F4DAY

Poor Man's Digital ATV Transmitter Project - M0DTS project based on the F4DAY D-ATV transmitter

13cm.co.uk - Amateur Television products, online store for ATV transmitters receivers, LCD controllers, wireless cameras, video senders, accessories, power amplifiers based in UK

4ATV.com - Amateur TV transmitters and receivers for ham operators, wireless cameras, ham antennas, 2.4 1.2 900 Mhz systems

NL5 Circuit Simulator - Analog circuit simulator for Windows (not a SPICE). A great tool for students, amateurs, as well as for experienced engineers. Free Demo.

Double Tone IQ-Generator - Easy to use double tone IQ-generator for testing direct conversion SSB-transmitters based on phasemethod etc.

Transistor Audio Preamplifier Circuits - Design Guidelines for Bipolar Transistor Audio Preamplifier Circuits By Mike Martell N1HFX

Resonant Frequency Calculator - This web based application will compute circuit values required for an L-C circuit to resonate at given frequency. Also it will compute the resonant frequency if given values for L and C.

Build A 30W 50 Ohm Dummy Load - For testing out transmitters every ham should have a dummy load, here is explained a 30 watt 50 ohm dummy load

KI5YN QLF Filter - A microprocessor based interface designed to go between a standard Morse code key and a radio transmitter. The circuit receives a signal from the key, processes it, and re-transmits it to the radio.

QRP AM(cw) Transmitter for 10 meters - In this project, you will make a simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator.

Basic QRP transmitter - A QRP transceiver project, design and build solid state QRP transmitter.

Unique PSK Transceiver - A novel way to make a PSK rig. Unique transceiver design does not use a SSB transmitter

M3 Electronix Semiconductor Analyzer Kit - A workbench instrument capable of testing transistors, diodes, FETs, usefull constructing QRP circuitry.

NB6M 10 Homebrew Receiver and Keying - Schematic of a homebrew receiver and keying

Using An Oscilloscope - It allows you to take a peek into a circuit to see what is happening has it happens, irrespective of the speed with which it is taking place