wind load calculator

Multiband wire antennas and ATUs  ^pop - DC1YB experience on multiband wire antennas. In particular examine FD4 windom and G5RV antenna, considering noise levels and matching aspects. Author reviews also the usage of Automatic antenna tuners in TS-50 TS-480 and GC-3000

N9ZRT Kite-Lifted Antennas - Kite-lifted wire winch consists of 1/4 mile of 15 gauge, bare, solid, aluminum wire, spooled onto a wide pneumatic hose reel. The base pivot-platform locks into place for changing wind direction.

The Lazy-H vertical antenna - A versatile antenna for dx work

160 Meter Vertical - This is a 90 foot tall top loaded vertical for 160 meters. It is constructed from aluminum irrigation tubing and has four sets of four guys each by w7iuv

Broadbanding the half-square on 80 meters - N6LF discusses a simple way to broadband the classic half-square antenna to operate in both the CW and SSB DX windows on 80/75 meters.

Magnetic Loop calculator - Windows antenna design program for magnetic loops antennas by DG0KW

Loop Antennas and Calculator  ^updated - The purpose of the calculator is to give you a quick overview of the feasibility of "squeezing" a loop into your available yard or apartment space. The calculator yields a reasonable approximation of dimensions, to within 5% over the amateur bands, using typical wire gauges ranging from 12-18 AWG.

Currents in Standing-Wave Antennas - How can the current "flowing" out of the top of a mobile loading coil be greater than the current "flowing" into the bottom of the coil?

Loop Antenna Basics - Loop Antenna Basics and Regulatory Compliance for Short-Range Radio

US HF Amateur Bands - US ham radio band plan in pdf available for download and print

Ginlong Technologies - World leading specialist in manufacturing, providing design services for small scale wind turbine systems and parts (<30kW)

CQ Zones World Map - A PDF file of CQ Zones made available by Icom America.

ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.

AutoRec - AutoRec is windows freeware time based automatic recorder - player for radio broadcast. Auto Recorder will record or play wav audio files, and execute batch or other executable application programs at scheduled times. The primary use for Auto Recorder is automatic, unattended recording and playback of network or other satellite-delivered radio station program material.

DXZone iGoogle Gadget - Add The DXZone.com iGoogle gadget to your home page ot to the Google Desktop. You will be able to search the dxzone.com and load last new links feed in your home page.

PreMuLoc for windows - This program combines the formerly know programs PreFind and MU-Locator into one but with many improvements to find the location of any prefix, country or Maidenhead locator! Display and find locators on any map and calculate the distance and direction between two locators.

Fcc Lookup System - The FCC Lookup System software uses the standard FCC data files in an advanced lookup system for matching a call sign to a user. The software creates index files to allow rapid searches without modifying the FCC data file. Available for both Windows and Linux.

RUMtrol746PRO - This program is used for the ICOM IC-746PRO, IC-7400.You can edit all the setting and write it to file for later use. Runs on Windows Linux and MacOSx

Grig Radio Control - Grig is a freeware 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. Grig supports the most commonly used CAT commands that are implemented by Hamlib, and integrates well with other ham radio programs like Xlog and gMFSK. Grig has been developed on Linux, but has been ported on Mac and Windows OS.

RUMtrol7000 - Windows and MacOS programming software for the ICOM IC-7000

Spot - Intelligent DXCluster Client - Reliable amateur radio software for OS X and Windows that works the way you expect. Spot allows you to chase the DX that really matters by putting you in charge of which DX spots you need to see and alarming you when they appear.

Fldigi - Freeware Digital modem program for Linux, Free-BSD, OS X, Windows XP, W2K, and Vista. Support several modes and is fully multi platform application by W1HKJ

KWRTTY - Freeware RTTY windows decoding program in German by DGØKW, Klaus

QuickMix - Freeware windows program that allows you to store configuration of your audio mixer in a settings file, and to restore the mixer to that state whenever you want. Useful for digital mode operations where different dsp programs may require different audio in and out settings.

Online Calculators for Radio & Electronic Design - Online calculators for toroid coil, air-core coil inductance, XL, XC, and more.