power mic

802.11 2.4Ghz Low-Power Vertical Antenna - A 2.4Ghz low-power 5dBi vertical collinear antenna for 802.11 applications

Collinear Microstrip Patch Antenna - Design of a 869 Mhz Collinear antenna

Chokes Explained - A "choke" is the common name given to an inductor that is used as a power supply filter element. They are typically gapped iron core units, similar in appearance to a small transformer, but with only two leads exiting the housing

The "Woodpecker" Tuning aid - This little gadget is that it allows you to tune up at full peak output power, whilst limiting the average power to a fraction of the peak, thereby protecting the PA from meltdown

The EZ-Tuner - The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.

Emtech ZM-2 Antenna Tuner Kit - The Emtech ZM-2 Antenna Tuner is a nifty little portable transmatch for QRP (low power). It utilizes the well-known Z-match circuit, which is especially useful for balanced antennas (like dipoles and loops).

D3 Antenna for Field Day - D3+ High Performance Antennas for Field Day. This article describes versatile broadband wire antennas. These antennas will double your effective radiated power over a dipole, will be easy and inexpensive to build and install, and will be simple to match.

Wisconsin Michigan CB Radio And Scanner Club - Here you will find an assortment of related links to some of the best CB and Scanner Sites on the Web. As well as a wealth of information on these two hobbies and others including articles on Ham Radio and other wireless technologies.

13PR184 Michael - 13PR184 - Michael's Website

Getting started in contest - A PowerPoint presentation by Bruce Draper, AA5B on how to get started in contesting

MicroWeather - An APRS-compatible Ham Radio Weather Station

ACARS Analyser - Designed to work with all the major ACARS data capturing programs and enable users to get a complete picture of all the aircraft in there database, where they go and what they have done in the past.

ViPEC Network Analyzer - This program intended for electronic circuit analysis (mainly for Linux). ViPEC is a powerful tool for the analysis of high frequency, linear electrical networks.

CirKits - Solar power DIY kits. Homebrew your own solar power regulator, and power center.

TANKIT Priority listing - A free design aid for vacuum tube linear RF power amplifiers. Determine plate circuit operating parameters and design pi or pi-L tanks quickly and easily.

80 m Hexfet power amplifier - 80m hexfet power amplifier by W7ZOI

Audio processor for SSB transceiver - This circuit consists of microphone amplifier and a high pass filter. Suitable to improve signal readability.

Inductor Design Software - RF toroid - A free too designed to assist in the selection of iron and alloy powder cores. RF toroid calculate the location of the Self resonate frequencies for series and shunt inductors.

Home Brew a Condenser Microphone - An inexpensive condenser microphone with excellent performance can be easily constructed with easily available parts.

Variable regulated power supply - 1.2-30V 1.5A variable regulated power supply

15 A from a PC Power Supply - 13.8 V 15A from a PC power supply

The Smart Switch - The purpose of this project is to build a smart switch A smart swith is a swith that needs a short press and the power will be turned ON.

Small Unregulated Power Supply Project - Here's a simple power supply that can be used in many applications. It is not regulated , so keep that in mind for voltage sensitive devices , and of course you will need to understand how to select the correct amperage and voltage for the AC transformer.

40 meter QRP Transceiver - This semi-homebrew QRP (low power) CW transceiver is based on the ARK-40 transceiver kit, by S&S Engineering. With its built-in CW keyer and 5 watts of power, the basic ARK-40 transceiver is an outstanding 40 meter CW performer

ICOM IC-E90 accessories - CI-V Interface and Power supply adapter for the IC-E90