coil making

DL9MEU Antenna projects - Basics for a good Antenna:``Only if you can hear it, you can work it!``Symmetric antennas save a lot of trouble.``No traps - no radials - no loading coils.

Homebrew Travel Antenna - This is a low cost homebrew two band travel antenna for 20 and 40 meters. It is based on the B&W Travel Antenna concept with a telescoping whip and a loading coil

Rotatable Dipoles  ^pop - Portable, and shortened with loading coils rotatable dipoles for 6 meters, 20 meters and multibands.

Switchable Antenna 80/160 meters band Priority listing - A switchable antenna for 80/160 meters by IK1ZOY. A new version of a 1/4L 80 m. dipole modified for use in 160 m. band. using it's own coaxial cable feeder to wrap a coil.

Current distribution in Coils - Current distribution in the antenna loading coils

EA5XQ's Projects: Magnetic Loop - Due to my job I have top travel a lot around the world, in order to find a way of making radio I decided to build a Magnetic Loop after some comments of other colleagues for working between 20 and 80 meters mainly.

Portable Loop Antenna  ^pop - This loop it is small and light enough to carry while operating, it disassembles into small but rugged pieces that fit easily in a backpack or gym bag, and it can be tuned from 14 MHz to 30 MHz. This tunable magnetic loop antenna is my contribution to the well established art of amateur loop making. Can be tuned from 14 MHz to 30 MHz.

Inductors used in antenna matching networks - Article about variometers, helipot inductors, roller inductors, binary switched inductors, Coil and Capstan by G3YNH

WhiteCliffs DX Group - Started in 1998 and grew out of the new CB internet newsgroup, uk.rec.radio.cb. the Group is run on a non-profit making basis

Ham Radio QSO Parties - QSO Parties held around the area. Details about making the most of the many QSO Parties. A place where planning information, operating details and technical advantages are discussed

W6BHZ - Cal Poly Amateur Radio Club - The California Polytechnic State University Amateur (Ham) Radio Club (CPARC) has a long tradition of communications service on campus and in the community of San Luis Obispo. The club was founded in 1947, making the Cal Poly Amateur Radio Club the second oldest club on campus

HamPage.com - Amateur radio start page (or "jump page") with categorized links on one screen-size page, making HamPage.com a time-saving default browser page for ham shack computers.

Mr coily - Base and mobile antennas,custom ball mounts, single, double, triple coil antennas, flat coils.

Hi-Q Antennas - HF Ham Radio mobile operation antennas manufacturer, W6HIQ, HA5CMG, VE7BOC, HF mobile antennas, screwdriver antenna, coils and filters.

Barker & Williamson - Dipole antennas, unique broadband antennas, trap dipole antennas, coils, accessories for HF radio

W3FF Antennas Buddipole - The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.

A beginner's guide to making CW contacts - Learning the code, answer a CQ, call your own CQ, QSO template for beginners and more

Radio Free London - Radio Free London is now BACK ON THE AIR. We are now back on medium wave (AM) on 1125kHz (266 metres) and 5805kHz short wave every Sunday. The SW service consists of a 4 hour loop of 2 programmes. The medium wave service has a third bonus programme making it a 6 hour loop of 3 programmes.

Swedish Report Service - independent non-profit-making association that try to act as the link between the listeners and the free radio stations

Radio Fundamentals - SWL radio fundamentals, beginner's guide to making CW contacts, interesting shortwave stations to find and more about bcldx.

WINRLC - Simple freeware tool to calculate several kinds of HF filters. Use to calculate L-C and R-C band filters and bandpasses, L-C, L-R and R-C highpasses and lowpasses, coils and capacitors.

Mac Antenna Master - Dipole, Yagi, Vertical, Cubic quad, Log periodic, J-pole, coil, and transmission line design package for the Macintosh

SWIFT WX - SWIFT WX Version 2.0 combines a powerful GIS mapping engine with real-time weather maps and storm tracking data making it the most comprehensive storm tracking application available.

Z Match for Higher Power - Single coil Z match witch handles the power of the linear amplifier

A 80/40m DDS controlled QRP CW transmitter - JUMA-TX1 is a 5W CW transmitter for the 80/40m bands. Juha (OH2NLT) and Matti (OH7SV) have had high quality CW keying and a compact size as design goals for this project. No coils need to be wound to construct this transmitter!