mag mount

Line Launcher - The line launcher is a handy tool which is a must-have for anyone who uses wire antennas. It provides an easy way to mount the end of a wire antenna up into a tree. It basically consists of a fishing reel mounted to a slingshot, which is a tried & true design.

137 MHZ QHF Quadrafilar APT Antenna - This version of the 135mHz quadrafilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey's article Taming the QFH which appeared in the March 1997 RIG magazine.

Mirrored J-Pole - The mirror-image J-Pole is very easy to construct and requires only two T-Fittings plus a length of copper pipe.

Small magnetic receiving loops - Article about magnetic loops, construction notes and diagrams

Magnetic loop antenna 10-30 MHz - magnetic loop for 10-30 MHz, using acetal rod former, aluminium foil conductor and copper-clad epoxy board capacitor

Magnetic Loop Antenna - Although a magnetic loop antenna(aka small loop antenna) is very compact, its efficiency is close to a half-wavelength dipole if carefully built.

Magnetic Loop antennas - Pictures, designs and answer to common questions on building magnetic loop antennas by ON4CEQ Van Herck

Magnetic loop antennas - Magnetic Loop Antenna, MagLoop, Small Transmitting loop, construction hints, remote control motors

2-Element-DK7ZB-Quad for 5 Bands - 10-12-15-17-20m A description was in the German Ham-Magazine "Funkamateur" in Issue 11/2003

Ground / Radial Systems - Guide to ground mounting antennas by Bencher

Radial systems and ground - Radial systems for elevated and ground mounted vertical antennas by SteppIR

NYLO's NOTEPAD Tower Page - Huge amount of relevant information you should know before building a tower

A *balanced* balanced antenna tuner  ^pop - The published version of this article appeared in the February 1990 issue of QST Magazine

Maycom Communications - maycom communications products has been industry distributor for over 30 years . Offer main line products and parts for many hard to find items . Antenna Mounts and Accessories basd in Michigan USA

Portable operations by G4AON - CT/G4AON/P with a elecraft K2

Ideas and Projects for QRP - The free pdf book is a compilation of articles congenial to QRP published on 2003- 2005 years at free e- magazine AntenTop. 17 Mb pdf file.

Report of Solar and Geophysical Activity - The Report and Forecast of Solar and Geophysical Activity is the primary daily report prepared by SEC. It provides a summary and analysis of solar and geomagnetic activity during the previous 24 hours as well as the most recent solar indices. It also provides a forecast of activity and indices for the next 3 days.

Today's Space Weather - SEC - Another interesting reports page with plots and graphs of solar flux. Interesting resources provided here includes, Solar images, a text 3 day solar geophysical forecast, a 3-days Solar X-Ray flux plot updated evety 5 minutes, The Satellite Environment Plot, combines satellite and ground-based data

NOAA Space Weather Scales - The NOAA Space Weather Scales were introduced as a way to communicate to the general public the current and future space weather conditions and their possible effects on people and systems. The scales describe the environmental disturbances for three event types: geomagnetic storms, solar radiation storms, and radio blackouts.

BEIJING ELJVT - Sell the China made electron tubes over a long period of time, the vacuum tubes/electron valves/Power tubes/Audio Tubes/Thyratrons/Magnetrons and accessories, the tube sockets, the vacuum capacitors, high voltage ceramic capacitors, aluminum electrolytic capacitor.

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

EasyPal - Easypal is a freeware DSSTV software uses the DRM (Digital Radio Mondiale) encoding to allow the sending of image files over voice channels. This mode is known as Digital SSTV

ATPDEC - Atpdec is an open source program that decodes images transmitted by POES NOAA weather satellite series. These satellites transmit continuously, among other things, medium resolution images of the earth on 137Mhz. These transmissions could be easily received with an inexpensive antenna and dedicated receiver. For more information about receiving POES satellite images consult the rig site.

SB220 SB221 arcing problems improvements mods - This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components.

Filters and Ferrites in EMC - This article is about the characteristics and use of various filters and ferrites for solving amateur radio electromagnetic compatibility problems involving breakthrough of amateur signals into domestic equipment such as television sets, video recorders stereo sytems etc.