dummy load

Building High Power, High Q, Loading Coils - This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter (1.83 MHz) vertical antenna.

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

Base Loaded 160M Half-Sloper Antenna - If you want an antenna resonoant on the 160 meters band this is a possible solution, but of course, need space.

Idiot's guide to antennas - A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles.

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?

ON6DP QSL-Manager-Database - Qsl manager database files to download in multiple formats along to IOTA reference and other utilities

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

ITU Zones map - A PDF File of ITU zones made available by Icom America

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

PD5DP Ham Radio Manuals - Another collection of manuals to download offered by PD5DP. Includes ham radio manuals for Icom, Kenwood, Yaesu, Diamond and AOR products

Kenwood manuals - Many of Kenwood’s instruction manuals are available for download. Manuals are in PDF.

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.

TS-850 service manual - Here is the Service Manual for the Kenwood TS-850 Transceiver split into four parts for download. TS-850 instruction manual also available

TANT 136 - DOS program for calculating the performance of a T antenna. Gives loading coil info and matching plus ERP by Reg G4FGQ

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.

Amateur Radio Repeater Directory - Amateur Radio Repeater Listings at your fingertips for the first time on your PDA

Argo upload - Allows you to automaticaly upload ARGO screen captures to your webpage in a convenient way. by ON7YD

Rapido - Rapido will provide an automatic download of a JPEG picture from the internet at a certain time interval and show the picture on screen. In addition it allows you to save the downloaded picture on disk.

Morse Code translator widget - Macintosh widget converts text to Morse code and vice versa

MacTNC - MacTNC is simple, configurable terminal software used by amateur (ham) radio operators to control a TNC (terminal node controller). MacTNC performs most of the same functions of other terminal software, but includes buttons for standard commands, and allows the user to configure additional buttons for special purposes. MacTNC works only user Mac OS X because it relies on Unix components of the current operating system.

Ham Log - Ham Log is an easy to use yet powerful QSO logging utility for all devices running Palm OS. Ham Log's design and functionality was designed to meet my needs when mobile and away from my home station.

Ham Fan - A free small database program for Palm OS that allows you to log ham radio contacts. You can log the call sign, name, date, time and frequency of the contact.

TS-2000/B2000 Memory Control Program - This program is for downloading, uploading the memory channels and various settings on the TS-2000(X)/B2000. To write data to or read the data from the TS-2000(X)/B2000 memory, an RS-232C straight cable is required. Runs on Windows 98.

A low cost dummy load - This article describes a low-cost, low-to-moderate power dummy load, which presents a 50-Ohm resistive load from HF through 440MHz.

Cheap and simple HF dummy load - This is the report of a MFJ-259B analysis of two 100 ohm / 5 watts resistors in parallel partially in italian