simple calculator circui

Slim Jim Antenna - Simple but effective antenna for VHF or UHF frequencies.

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

40 m linear loaded dipole antenna - The K4VX linear-loaded dipole for 7 MHz, simple and practical way to make a short but efficient 40-meter dipole.

Antenne Topfkreis - A simple vertical antenna for 70 cm band

The N4GG Array - Need a simple, nearly invisible wire antenna with reasonable gain, lowangle radiation (for DXing) and multiband capabilities? Check out this long-overlooked design that requires no antenna tuner

5/8 Wave Vertical Antenna Calculator  ^{updated  pop} - Design your own 5/8 wave vertical antenna. A simple jscript calculator at Antenna Elmer.

Practical Wifi Antenna Measurement - This page describes a simple way to determine the main RF characteristics of a Wifi (IEEE802.11b/g wireless LAN) antenna.

CantennaCalc - Kioan's calculator for building a Cantenna , directional waveguide antenna for long-range Wi-Fi

Simple wire antennas that work - Dipole, inverted V, full wave loop and grond plane antenna quick reference plans

6Shooter.net - The 6 Shooter Net is a informal rag chew, swap net, and tech question net held on Sunday nights on 147.570 simplex in the Dallas/Fort Worth metroplex. See our website, www.6shooter.net for more information!

VE2ZAZ's APRS Mobile Tracker - This is a really simple setup that provides vehicule position in realtime via the amateur radio APRS network

Simple CW keyer - OH7SV ultimatic type keyer with Dit priority

Chushcraft A3S - Simple Balun Support - A method for supporting a balun on a Chushcraft A3S antenna. This allows the balun to be isolated from the boom, thus reducing the effect of introduction of reaction with the balun core.

Beacon Assistant - Simple little program that just points to the spot on a world map where a radio beacon is transmitting.

VQSpot for VQLog - VQSpot is a simple program developed for sending DX-Spots automatically when QSO are logged into VQLog

Grig - Grig is a simple Ham Radio control (CAT) program based on the Ham Radio Control Libraries (Hamlib). It is intended to be highly generic presenting the user to the same graphical user interface regardless of which radio is being controlled.

SatWarn for SatPC32 - This is a simple program that communicates via DDE with the excellent DK1TB's SatPC32 satellite tracking program and gives a voice warning when a satellite rises above the horizon.

A Modest Antenna Rotor Installation - A simple TV Rotor installation by W7ZOI

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.

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.

Homemade CW Keyer - CW paddle made with a steak knife some simple hardware and a stainless steel fork

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

80m Passive Heterodyne Receiver - Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m.

RF Probe - The Sharpie Probe, homemade with simple tools and few resistors