80m trap design

DL9MEU Antenna projects  ^updated - 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.

The optimized wideband antenna - NW3Z yagi antenna designs for Dayton 2001 Includes yagis for 20 15 10 meters.

Beverage Antennas - So you want to build a Beverage Antenna.

Double Extended Zepp Antenna  ^pop - This double extended Zepp provides 3 db gain over a dipole on the band it is designed for. Each side or leg is about 5/8 wavelength long.

The Moxon Rectangle on 2 Meters - We often think of the Moxon rectangle as strictly an HF antenna. However, its small size and special far field pattern lend themselves to some VHF applications. So let's see how to adapt the design to 2 meters (as a popular band choice) and also see a few of the uses to which we may effectively put the design.

A linear loaded vertical antenna  ^pop - Vertical antenna design by David Reid PA3HBB G0BZF

Half Bobtail Antenna - design by Brian Williams, GW0GHF

A vertically-polarised VK2ABQ Antenna - design note by Brian Williams, GW0GHF

Short Dipole for 80 Meters  ^pop - May be of interest to anyone wishing to get on 80M (3.5MHz) that have limited space available.

K7EM 80m 4-Square Array - This array has been in use since 1989 The SWR from 3.5 to 3.9 is below 1.5:1

KB1DIG's 2 Meter Antenna Design Gallery  ^pop - Home-brew antenna designs for VHF. 2-meter colinears, 2-meter Halo, and 6-meter Halo

Choke Balun Designs - In this designs G8ODE explains different methods to builds a choke balun

Using Delta Matching on HF Beams - Using delta match with HF antennas design

2 Meter J-pole from 450-Ohm Ladder Line  ^pop - Great first time J-pole project. Covers most of the basics. This small and thin design also makes it good for several stealth applications.

Limited space antennas - My site describes several compact antenna designs.

Petlowany Three-Band Burner Antenna - a simple, low-cost, trapless short vertical antenna which amazingly works on three HF bands (20, 15 and 10 meters)

Semi-vertical trap antenna  ^pop - The G3NGD Semi-vertical Trap Antenna for 1,8 3,5 and 7MHz

Smithe Windom Six Band HF Windom antenna - HF Windom antenna, cover 80, 40, 20 15, and 10 meters, antenna design by K3MT

Dipole / Inverted Vee Antenna Design - Formulas To Design Your Own Dipoles And Inverted Vees

Quadrifilar helicoidal antenna - Design your own quadrifilar helix, the site even generates a drilling pattern in a PDF file. Several different construction methods are shown.

ON5UR QSL print service - We are hams who design high quality full colour QSL cards. Now we print also full colour backsides on our QSL cards. 1000 cards costs only 82 Euro. For more details write max@on5ur.be``Remember: The QSO is short, our QSL cards are forever !

Design and build helix antennas - An on-line javascript calculator and quite a few pictures to show how to make a helix antenna.

QRO via Russia - Power amplifiers from amateur radio operators around the world which are designed/built using Russian tubes.

A.M. tutorial - This tutorial is designed to help explain some of the concepts involved in RF power measurement for amplitute modulated signals.

Amateur Radio Repeater Controller - The project requirement is to design the interface to the signal channel elements after the receiver and before the transmitter