number logging

The Gain of an Endfire Array - This article looks at the maximum theoretically possible directive gain that could be obtained with an endfire array of given length or number of elements, and compares this with practical results in the literature.

A balun tutorial design - A balun tutorial discussing a number of aspects of the design and construction of baluns for the amateur radio design of your next electronic project.

W4INF Hidden House Loop Antenna - If you live in a restricted subdivision, you need to make the most out of it. This loop antenna is balanced line fed and works 40m-10m, does decent on 80m.

ARRL 10 meter contest Log - A sharewave windows logging program for the ARRL 10 meter contest by N3FJP

HA1AH Contest Software - The HA1AH Contest Software is a graphical logging program for radio amateurs. It is a java program and can run on Windows 95, 98, NT4, 2000, XP and Linux.

Shortest Vanity Callsigns  ^updated - This is a service for finding the shortest available vanity callsign in your amateur radio class. It filter through all possible callsigns and provide just the unused ones weighted by their length in morse code or their actual number of letters.

Irish Lighthouses - lighthouses and lightships of ireland and northern ireland with arlhs reference numbers for all irish lights

Numbers Stations - About numbers stations, and their criptic transmissions, where to listen to them and some audio recording samples by fascinating shortwaves

YouTube : AO-51 Videos - Videos of AO-51 operations. Randy K7AGE has produced a number of practical and useful videos including good info on a minimal antenna setup for AO-51 reception.

WorkedGrids - WorkedGrids is a Windows application that displays a map showing the amateur radio grid squares contacted and logged in using a third-party logging program. WorkedGrids uses colors to display information on a per-band basis. Up to four bands can be displayed concurrently by VE2ZAZ Bert

Understanding propagation numbers - Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities

Predicted Sunspot Numbers and radio flux - Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center

FT9000 PEP upgrade in UK (2009) - PE2MC about FT-9000 upgrade of firmware in the Main CPU and DSP and replacement of a number of PCBs

Fascinating Shortwaves - Article collection about shortwave listening, including number stations, tty fax reception samples, utility stations examples, navy and military morse metworks documention

Number One Systems - Professional ready-to-use PCB design product.

9A VHF Contest software - 9A VHF Contest - software for vhf/uhf and up for contest logging. For now on 3 laguages: Croatian, English and Polish.

Super Check Partial - Super check partial is a feature that K1EA first introduced in his CT logging software. It enables the use of a database to extend the list of calls that appear in the check partial call window. Used correctly, it can help you more quickly pull a call out of the QRM

WSJT - WSJT facilitates basic digital communication using protocols like FSK441, JT6M, JT65,JT2, JT4, WSPR explicitly optimized for a number of different propagation modes by K1JT

Ham Radio for HanDBase - PocketPC mobile logging database for Amateur Radio operators for HanDBase

DXFile - Windows shareware logging program, offer several features like packet radio interface, web cluster, grid square, beaming directions, qsl manager lookup, dx spot filtering by F6GQK in french.

5MhzLog - This logging application has been developed to improve the accuracy of the data being captured for the 5MHz Experiment.

CYBORG - Freeware windows RTTY PSK31 software decoder that allow logging, award tracking and qsl printing. By SQ1FTB

AirLink Express - AirLink Express is a user friendly digital mode software package for the Amateur Radio Operator. The software is compatible with Microsoft Windows XP and Microsoft Windows Vista. It offers PSK, MFSK and RTTY digital modes with logging and macro capabilities. If you have ever used the Digipan software you will be immediately familiar with Airlink Express. The user interface is almost identical by Alex Krist, KR1ST

RadioMax - Allows any PC to improve the performance of radios and scanners, providing fully automated control of the radio (plus tape recorder if desired) allowing unattended scanning, logging, speech and tape recorder control. Works with AOR, DRAKE, Icom, Kenwood, Lowe, Optoelectronics, Radio Shack and Uniden.

Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.