two tone oscillator

N4JTE Antennas Priority listing - Just Too Easy 40 meter reversible quads in two an three element version

50MHz Power Splitters - Splitting an antenna between two receivers or in use as the phasing harness in stacked antennas where there is a need to equally split the power from the transmitter between two antennas

Antenna Cable Loss and SWR - Calculate Cable Loss from SWR and reverse. Text file with only two simply formulas

A two band halo for VHF Mobile - 50 and 144 Mhz with a single mobile antenna system

Antenna Gain Comparison System - This device goal is to optimize homebrew antenna for the V/UHF band. This tool, is based itself on the simultaneously comparison between two antenna, directly in dB. by IK0BDO

Mirrored J-Pole - The mirror-image J-Pole is very easy to construct and requires only two T-Fittings plus a length of copper pipe.

TLF Contest Log - A GPL console mode (ip-) networked logging and contest program for hamradio under LINUX

CU2A - Charlie Uniform Two Alpha

Bavarian Packet Radio Group - This site provides information about the BayCom packet radio hard- and software for radio amateurs. It also contains general information on the German packet radio network.

EMO ARES Provincial Emergency Operations Centre - Providing communications networks to local authorities in Ontario in the event of an emergency.

KC9KXZ Extreme Amateur Radio Networks - Doing the extreme in Amateur Radio.

Cantenna Wireless Booster Antenna - Extend the range of wireless network or connect to other wireless networks in neighborhood with your own wifi antenna.

D-Region Absorption Prediction - This map represent the current position of the sun and how a solar flare influence an HF fade. Estimated recovery time is also represented. Includes son java and javascript animations of last two hour conditions

BatteryZone - Batteries and accessories for two-way radios including Icom Kenwood Yaesu Alinco Midland Motorola Uniden and more

PI-EL - The Windows program for designing and analyzing PI and PI-L networks by Tonne Software

Elsie - Filter Design - Filter design software. Elsie is an uncommon commercial-grade lumped-element ("L-C") electrical filter design and network analysis program, directed toward the engineer or technician involved in that line of work.

Quad - from Tonne Software - This graphics-intensive program designs and analyzes active quadrature ("90-degree") networks for use in SSB transmitters and receivers.

MU-Locator - This free program displays the location of any locator on a map. It calaculates between two Maidenhead locators the distance (km and miles) azimuth longitude latitude Show the location, direction and distance as you move your mouse on a map! Graphical Locator Program, By ON6MU

TinyLocator - This free program calculates the location of any locator. It calaculates the distance, azimuth, longitude and latitude between two Maidenhead locators. Converts longitude/latitude coordinates to Maidenhead locator Converts Maidenhead locator to longitude/latitude coordinates

Wireless Field Day Log Program - A reliable logging system for Field Day based on wireless networking. Freeware, runs on macintosh, linux and windows

WINRAD by I2PHD  ^{updated  pop} - Winrad is a free software program designed to implement a Software Defined Radio (SDR), meant to run under Windows XP, Windows 2000, or Windows 98SE. In a nutshell, it accepts a chunk of up to 96 kHz coming from a complex mixer in form of two signals, I and Q, fed to the PC sound card.

RevLoad - This graphics-intensive program reveals the load on the output of a matching-network, based on measurements of the components in that network. Adjust the network (tuner) for a flat input, measure or look up the network component values and you will immmediately see the R and jX values of the load on the network, presented as both a schematic with the component values and as a Smith Chart normalized to the specified system impedance.

Voice descrambler - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band. Use it only if legally permitted in your country. I assume no responsabilities deriving from its use. Standard disclaimer applies

13cm RF Amplifier - This amplifier uses two 60w Spectrian amplifier boards with the usual input and output hybrid coupler and combiner.

IK8MKK Home-Made equipment - Two 50 Mhz amplifiers and antenna switch