wind load calculator

Vertical antenna for 160 meter - This high antenna require a large ground composed by 40 radials. It's not very handy expecially in windy situations but is very powerfull in pile-ups. In italian

The Sperrtopf antenna for 2 meter band - By ON4CFC Pascal, describe how to build a Sperrtopf or Sleeve antenna for the 144 Mhz, PDF File by antennex

N3DNO's Antenna calculator - A 3 element yagi antenna calculator that uses javascript by N3DNO

Log Periodic Antenna Design  ^pop - calculates the dimensions and spacings of the elements needed to build a log periodic antenna, given tao, sigma and the lower and upper cutoff frequencies.

Quad antenna calculator - To get the dimensions for your quad, all you have to do is type in the center frequency of the range where you talk, or the frequency you use most and then click the Calculate button.

Morse Runner - Freeware contest simulator for Windows 95/98/ME/NT4/2000/XP Copyright (C) 2004-2006 Alex Shovkoplyas, VE3NEA

A new method of radio direction finding Priority listing - A method of finding radio sources with antennas based on omni-directionality (the less directional the better coverage). Uses energy levels and some sophisticated math (encompassed in a free software download on the site) to find x,y,z coordinates of the fox relative to the center of your antenna array. Can be overlayed on a GPS map to help you locate in real-time.

Coax Cable loss and SWR calculator - This small window application will calculate Coax Cable loss from SWR and SWR from Cable Loss

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

Tower - Windows program for analyzing vertical antennas. This program shows the resistance and reactance to be expected looking into a cylindrical metallic tower over a perfect ground. It gives a useful approximation of the values to be expected in a real-world situation.

Faros - Windows shareware, automatic NCDXF beacon monitor for Radio Amateurs, SWL'ers and HF communication engineers. by Alex VE3NEA. It continuously monitors 18 NCDXF beacons on five bands, automatically detects the presence of the beacon signals, even in QRM and noise.

SVC Filter - Filter design software. A program designed to expedite the design and analysis of lowpass (and highpass) filters with nearest 5% component values. SVCfilter is 32-bit Windows electrical filter design software nicely written to help the radio amateur, technician or engineer design and analyze lumped-element lowpass and highpass filters.

Numerical Electromagnet Code (NEC) Archives - The unofficial Numerical Electromagnetic Code (NEC) Archives, antenna analysis software

jLog - jLog is a modern Freeware Ham Log program that can run on all major platforms, e.g. Mac OS X, Mac OS, Linux/Unix, Windows, etc. It offers a nice, clean interface and allows efficient entry of QSOs. Import or Export of data using the standardized ADIF 2 format is possible to easily exchange data with any other decent Log program. Built-in CW Keyer, CAT control for many popular, rigs, DX Cluster tracking, call lookups

PreFind - A Free Prefix, DXCC and Locator program for Windows

DXSpider - DX Cluster - DXSpider is a clone of PacketCluster software that runs under several operating systems including Linux and Windows compatible with the AK1A program

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

UISS Windows Packet Program - This program has been designed for packet communication with ISS (International Space Station), PCSat or 'compatible' satellites with ease... Ideal for any UI packet communication.

BPQ32 - A user group established by John Wiseman G8BPQ/GM8BPQ and Ron Stordahl AE5E (ex N5IN) for BPQ32 - AX.25 NET/ROM compatible node software for Windows.

Propagation Wizard - Freeware windows application that help in determine the availability of a shortwave link, by Rohde & Schwarz

RadioCtl - A computer control program for ICOM, KENWOOD, Radio Shack and AOR radios using Windows 3.1 or Windows 95. The program features 1000 frequency channels, 100 scan and search banks, and DBASE compatible frequency lookups.

N9ZLE ICOM - CIV Software - IRC is a Free Radio control program for Icom radios using the CIV CT-17 or compatible interface. This program allows the use of different skins to display just about any radio from the IC746 to a secret agent watch. The program uses the new features available with the 746 and 756 to upload or save memories from your rig

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.

Coax Switch 160-10 meter - Cheap and Dirty Coax Switch by Glen E. Zook, K9STH