cte titan 500

Restricted space 80 meter antenna - This article describe a small single wire antenna running on the side of the building allow operations on 80 meters band

Beverage transformer notes - Notes on beverage transformers collected by N1EU

Horizontal Half-wave Dipole above a Counterpoise - All antennas that are situated close to the ground are affected by that ground to some extent. This article explain effects and benefits of counterpoise.

The Joystick Antenna - The Joystick antenna was used many years ago as an all band vertical HF antenna under restricted space situations that would cover from 80 meters thru 10 meters with a tuner and was a great commercial success Some hams even had success with it on 160 meters.

Azimuth Radiation Patterns - Below VHF the change in the radiation characteristics of an antenna will change considerably from frequency to frequency, making antenna selection more complicated.

Horizontal Antennas above Real Ground - Antennas are influenced by the effect of the ground and by the type of conductors from which they are constructed. Effects of various types of grounds on a 1.825 MHz horizontal 0.5 wave dipole

Matching Waves, VSWR at work - When the radiation resistance (voltage to current ratio) of an antenna is the same value as the characteristic impedance of the transmission line (voltage to current ratio in the line), all of the electrical energy transmitted down the line is taken by the antenna and radiated into space in the form of a radio wave.

SOTA South Africa - Summits on the Air South Africa formed in October 2002 to draw up an Association Reference Manual and compile a list of South African summits that can be activated or contacted for SOTA awards

How the Hellschreiber works - Hellschreiber is a teleprinting system based on low-resolution character-level facsimile. Learn how it works with animations and graphics.

WSPRnet Weak Signal Propagation Reporter Network - A group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power transmissions. Computer sent/received Morse signals received by amateurs and collected on an online database.

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

Catania Observatory sunspots data - Daily sun spots data collected by the Catania astrophysical observatory

FTBVR5K - Free memory backup/restore program for the Yaesu VR-5000 receiver.

Yaesu VR-5000 Product Reviews - Review of the Yaesu VR5000 general coverage receiver

YaesuVR-5000 Yahoo group - A list devoted to the Yaesu VR-5000 Reciever.

VR 5000 Receiver - Private homepage by DG8JZ with information about the VR5000 receiver including some usage tips. Mostly in german

Yaesu VR-5000 Review - Strong Signals review of the yaesu VR 5000 general coverage radio receiver

RigPix Database - Yaesu - VR-5000 - Big picture and detailed feature of the yaesu VR-5000 receiver

Yaesu VR-5000 files - yaesu vr5000 information, brochumre, vr-5000 manuals, modification and other useful files

MetricTest - New and used test equipment, oscilloscope, spectrum analyzers, multimeters, signal generators, power supplies, network and signal analyzers and more

TNC - The Packet Terminal Driver program is a general purpose communications package for communicating with a packet TNC attached to your IBM-PC/clone. The program was written to work with the Kantronics range of TNC's but should work with any TNC that is connected to a serial port on your computer.

2 x 3-500Z HF Power Amp - A 2x3-500Z rf power amplifier for 80-10 meters

Coaxial Cable The neglected link - The purpose of this document is to show the transfer impedance and shielding effectiveness of different types of coaxial cables

Pixie 3 - 80 m QRP transceiver - A 3500kHz - 3579kHz range transceiver, output 250 mw by SP5DDJ

SoftRock SDR Interest Group - 5000+ member discussion group for the low-cost series of SoftRock SDR receiver and transceiver kits.