144 12 elements

A 2 elements yagi antenna for 28 Mhz - An inexpensive antenna for 10 meters band in spanish

WARC 3 band dipole - A dipole antenna for 12 17 and 30 meters band

W1ZY 40 meter moxon antenna - W1ZY's 40 Meter MOXON is the product of 9 months of experimentation. The final array is reversible and constructed from No. 12 insulated wire fed through two RF current baluns

Hex Beam for 6 meters - This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL

Homebrew ladder line - Homebewing ladder line discussion at qrz.com

Home-Made Ladder Line - K2HYD illustrate how to home made ladder line

4el. Hentenna for 50MHz - A 4 elements Hentenna for six meter band

The 3-D Folded Loop Antenna - This article will introduce you to an antenna author call the 3-Dimensional Folded Loop. This antenna is the result of his continuing efforts to compact full-size antennas by folding and bending the elements. A one-wavelength loop that is reduced in height and width by being folded into three dimensions.

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.

What make the carolina windom so good - The off-center fed CAROLINA WINDOM provides outstanding performance on all bands. This includes all the WARC bands, 30, 17, and 12 meters.

A short Quagi for 1298Mhz - Based on K5OE design by GM1SXX

AO-27 yagi antenna design - A 7 elements yagi antenna for the AO-27 satellite reception

K5OE, Introduction To Amateur Satellite Ground Station Antennas - There are many kinds of satellite antennas that will get you on the birds and allow you to have lots of fun

1200Mhz 40elements YAGI - A table with element size and spacing for a 40 Elements yagi antenna for 1200 Mhz

OZ7CQ - The CQ Contest & DX Group, main activities is - participating in contests. Mainly in the Nordic Activity Contest at the 50 MHz, 144 MHz and 432 MHz, though the group holds a full licence, have we not participated in a HF contest yet.

VKV zavody Contest site - These pages containing informations about contesting on 144MHz and higher bands. All informations are only in Czech language.

Los Angeles County Disaster Communications Service - Here you will be able to access all of the information regarding our amateur radio disaster relief communications organization, its divisions and volunteer members

Cuyahoga Falls Amateur Radio Club, Inc. - We are a Club consisting of 120+ members from the Summit/Portage County area

E-skip Warnings via Email - Automatic 144MHz E-skip Warnings via Email for European Region

Getting to know the Elecraft KX3 - N4KGL review of the Elecraft KX3 transceiver based on first experiences in portable operations.

FT-847 Modification for UO-12 operations - Istructions to use the IFD demodulator

Troubleshooting Traps - This article refers mainly to the old Cushcraft 1/4 wavelength AV series of antennas (12AVQ, 14AVQ etc) hence the references to radials. The R series (R5, R7 etc) are 1/2 wavelength antennas, and the radials are NOT 1/4 wavelength resonant.

A low cost 600 watt ultra-linear amplifier  ^pop - This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. It is only 11" wide, 4" high, and 9" deep. Operates for 40, 20, 17, 15, 12, and 10m

Ameritron AL-1200 to gs35b Conversion - The Ameritron AL-1200 Amplifier is in current production. In its factory configuration it uses a single 3CX1200A7 (triode) tube, grounded grid configuration. Re-tubing the AL-1200 with a GS-35b with success.

Oscilloscopes - basic use and measurements - A 12 pages pdf article about oscilloscope use, calibrating, operator controls and tips on making measurements by NA5N