over tone

The Cobwebb HF Antenna - The G3TPW Cobwebb antenna covers five bands, 14 - 28 mhz, including the WARC bands

Ribbon Dipole - Ideal antenna for QRP work, as it has more gain over dipole.

Dipole antenna - Overview, summary, tutorial about the dipole antenna or dipole aerial that is widely used on its own and as the basis for other antenna designs.

T2FD, The Forgotten Antenna - The terminated. tilted, folded dipole T2FD is a little known antenna that performs excellently. Compact in size compared to a half­-wave dipole the T2FD provides signal gain, wide frequency coverage, and exceptionally low noise characteristics.

The Crossed-Field Antenna - Please be aware this article introduces a completely new concept in antenna theory. In fact, this is considered the most important development relative to antennas in this century. It is so pervasive that a series of articles are required to cover the concept and its applications to the depth and extent it deserves. This is the first publication about the Crossed-Field Antenna

Axial-Mode Helical Antennas - Turn Helical Antennas Over Perfect Ground and Modeling Helices in NEC-2

Multi-pitch Helical Antenna - Creating multiple, overlapping resonance at 700-800 MHz band and leaving the VHF part of the response as in ordinary, narrow band helical antenna.

Axial-Mode Helical Antennas - Notes on Axial-Mode Helical Antennas in Amateur Service. Helix Basics, Modeling Issues, and Short Helical Antennas Over Perfect Ground

Loop Antennas and Calculator - 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.

KR1ST Magnetic Loop Antenna - This receive only loop covers a frequency range of about 5 MHz to 22 MHz and is built from readily available parts.

Verticals. Ground systems and some history - Article gives a good overview of the basics and reflects the accepted wisdom from BC antenna work.

Antennas and transmission lines - A very exaustive article on antennas and transmission lines. Covers many aspects of antennas and feed lines, in spanish

Z Match for High RF power - Based on VK5BR's Z-Match and designed for High RF Power covers 160 to 10 meters by VK6YSF

W1ORS Stratford Amateur Radio Club - Serving the Community and Amateur Radio for over 50 Years

MT. Tom Amateur Repeater - A Massachusetts Non-Profit 501-C(3) corporation of amateur radio operators chartered in 1978 covering the Connecticut River Valley in Western Massachusetts and Northern Connecticut.

W1GZ MARA Ham Radio Fitchburg Mass - Aamateur radio club affiliated with the Amateur Radio Relay League (ARRL) from Fitchburg Massachusetts. MARA owns and operates the W1GZ repeater 145.45- with a tone of 74.4.

N1NC Nashoba Valley Amateur Radio Club - The Nashoba Valley Amateur Radio Club (NVARC) was formed in Groton, Massachusetts, in the spring of 1992 and has grown from the original 13 founders to over 60 members.

Jersey Shore Amateur Radio Society - Serving the Jersey Shore for over 30 years.

W2YD Morris Radio Club - The Morris Radio Club, established over 50 years ago, is a general interest club that promotes all Amateur Radio activities.

Putnam Emergency and Amateur Repeater League - For over 15 years, the putnamemergency and amateur repeater league (pearl) has been providingthe citizens of putnam county, n.y. with emergency and public services.

Rainbow Amateur Radio Association - RARA was founded in 1995 by a group of active amateur radio operators from several regions of the United States. Today, the club is international in scope with over 135 members around the world.

W0HSC NDSU Amateur Radio Society - The major goal of this site is to give the reader a general overview of what amateur radio is, and what it has to offer

W8NP The Massillon Amateur Radio Club - Since 1927, the Massillon Amateur Radio Club has been a diverse radio hobbyist club that is currently over 80 members strong.

Milestone Technologies - Morse Keys, Keyers, Keyboards, and Keyer Paddles, electronic parts, QRP transceivers, books and tools

Ham Radio and BPL - Broadband over Power Lines (BPL) and Amateur Radio by the Rochester Amateur radio club