network

Pfeiffer Quads - The Pfeiffer Quad was described in QST and has the desirable feature that it is smaller than a standard cubic quad but does not compromise performance very much. The Pfeiffer design is rather difficult to construct because of the complicated linear loading networks required.

The Old Tube Radio Network - The Old Tube Radio Network is dedicated to those real, American-Made, Old Tube CB Radios

UCXLog - Log and Contest Program, Windows based, network capability, CW via COM/LPT, SSB/RTTY via soundcard, trcvr-Steuerung (2TX for SO2R etc.), DX-cluster via packet, internet or telnet, statistics(DXCC, IOTA, locators...), log import/export, QSL card handling(printing tool), grey land map etc. etc. and freeware!

NCDXF/IARU Beacon Project - The NCDXF, in cooperation with the IARU, constructed and operates a worldwide network of high-frequency radio beacons on 14.100, 18.110, 21.150, 24.930, and 28.200 megaHertz. These beacons help both amateur and commercial high-frequency radio users assess the current condition of the ionosphere

Maritime Mobile Service Network - Maritime Mobile Service Net for disaster help on high seas on foreign lands

CARMEN Caribbean Amateur Radio Meteorological Emergency Network - Volunteer amateur radio operators (Hams), have maintained a radio station WX4NHC at the National Hurricane Center (NHC) in Miami since 1980.

RACOM - Radio modems - RACOM is a Czech company specialized in design and production of radio modems and other devices for wireless data networks for radio channels from 140 to 900 MHz. RACOM radio data networks are suitable for data transfer in telemetry & SCADA applications, transaction networks, security systems, IP networks and firts of all mobile tracking and fleet management.

Amateur Television Network (ATN) - Fast Scan Amateur Television in Southern California, Nevada, Arizona, New Mexico, Indiana and soon in Illinois.

Mixed-Mode Operation on Voice Repeaters - Mixed-mode operation, where voice and digital transmissions are used in turn on the same frequency

USPacket - USPacket is dedicated to networked amateur radio.

An Introduction to FlexNet - Features and operation of FlexNet packet networking software are discussed. Details of the software architecture, RMNC and MS-DOS hardware platforms, applications, user interface, adaptive parameters, and routing techniques are presented.

NI4CE Repeater System Online Stream - Listen to NI4CE when you're outside the coverage of the network.

Scanning Reference: WEFAX - The following very comprehensive list was produced by G6DOF and has been extracted from the amateur radio packet network

Test Equipment Depot - New and Pre-Owned Agilent, Avcom, Fluke, Hewlett Packard, Instek, Leader, LeCroy, Tektronix,and more ..Oscilloscopes, Spectrum Analyzers, Network Analyzers, Power Supplies, Video Test Equipment, Generators, Meters and more

AST Global Electronics - New and Pre-Owned Agilent, Avcom, Fluke, Hewlett Packard, Instek, Iwatsu, Leader, LeCroy, Tektronix, etc. Oscilloscopes, Spectrum Analyzers, Network Analyzers, Power Supplies, Video Test Equipment, Generators, Meters and tons more

Rádio Nacional de Angola - Provides broadcast times, frequencies and power of the network emissions. Airs mediumwave, FM, shortwave and RealAudio broadcasts

MediaCorp Radio - Operates Singapore's largest radio network with 11 FM stations and 3 shortwave stations providing sound entertainment and up-to-the-minute news and information locally and internationally.

Israel Radio - Israel Broadcasting Authority guide to the IBA radio networks known in Hebrew as Kol Israel - the Voice of Israel.

Caracol Radio - One of several Colombian broadcasting networks heard on AM and FM and worldwide on 5076 kHz in the 60 meter band.

SmartSmith - A smarter version of the Smith Chart program. It allows you to dynamically generate impedance point plots as you configure each design element of an impedance matching network. Has an extensive Help file with a Wizard that tells you what steps to take in designing a matching network for a given load impedance. Complete Windows installation kit by w9dmk

EchoMac - Mac Ham Radio EchoLink Client - EchoMac is an apple macintosh client for EchoLink internet radio network.

APRS on your phone - iBCNU is an APRS GPS position reporting and text-messaging application for the Apple iPhone. When position reporting is enabled, the application will periodically send out location of your iPhone using either 3G or WiFi network and iPhone's built in GPS receiver

Ham Radio Online - Computer Networking RFI - This page is to provide links to resources and information regarding technologies to reduce computer interference

Build A Vector Network Analyzer - The VNA (vector network analyzer) is an essential tool for measuring the complex impedance of a circuit at a given frequency. Article on how to build a Impedance analyzer.

VNA-dsp / Antenna Analyzer - This project is an attempt to build a portable standalone VNA (Vector Network Analyzer).