vertical antenna

Receiving loop aerial for 1.8 MHz - Bulding notes of a receiving loop antenna for 160 meters band

QM5 Yagi for 2 meters band - The QM5 antenna is a simple 5 elements Yagi with 1.88 m boom length for the lower 144 MHz SSB/MGM band, I used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 9.17 dBd; i.e. 11.3 dB forward gain over the isotropic radiator, while the F/R is about 11.5 dB. Elements

40M Fullwave Loop Antenna - KA6WKE full wave antenna for the 40m amateur radio band

A dipole for 6 meters band  ^pop - Six meters band dipole horizontal or vertical

Online helix antenna calculator - PHP Helical antenna calculator, need SVG viewer

Quad loop antenna for 10 meters - A 27-28 Mhz quad loop antenna by Bernard Mourot F6BCU in french

A Magnetic Loop Antenna for Shortwave Listening (SWL) by KR1ST - A well documented plan to build a magnetic loop antenna for Shortwave Listening, includes photos and diagrams.

Antennas for HF mobile operation  ^{updated  pop} - The following description should give you guidance on how to build a mobile antenna for HF bands yourself, using a very cheap CB-mobile whip antenna base. Antennas for mobile operation 7Mhz ,10Mhz, 14Mhz, 18Mhz, 21Mhz, 24Mhz,28-430Mhz

The Ultimate AM Antenna - How to improve your radio receiver reception on shortwave radio bands

Cheap antenna to make from 160m - 6m  ^pop - The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD

Antennas and Grounds for apartments  ^pop - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna

Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna

Loop-Uda-Yagi for 2.4 Ghz  ^updated - Information on wifi antenna

GMRS J-Pole Antenna - Build a j-pole antenna for the GMRS/FRS radios. These radios are the type you can buy at sporting goods stores such as REI, Cabelas, etc. There are several radio manufactureres who make GMRS/FRS radios with removable antennas. This antenna can increase the range of these radios by miles!

Tri-County Amateur Radio Club VA3TRI - Website for radio Amateurs in the Hastings, Peterborough, and Northumberland Counties of East Central Ontario, Canada. Propagation information as well as antenna designs and home brew projects and Club News. Many links to Amateur Radio information

EZMaster by HamRadioSolutions - EZMASTER the all mode all in one interface. USB/Parallel/Serial Device. Include 75 sec Digital Voice Keyer, K1EL Winkey CW Keyer, SO2R switching, two radio interface, two RTTY audio insulated ports, two flexible Antenna Switch control. Ideal for Contesting, SO1R, SO2R, field day and daily activity. Compatibile with all software on the market : CT, CTWIN, TR, NA, WriteLog, N1MM, WinTest, MMTTY, MIXW and more .

The reflected W beam - Hexagonal wire beams for all hf bands, technical resource, EZNEC files, tools for antenna modeling and documentation. You can also order parts to build your own antenna.

Radiowavz Antennas - Double Bazooka, G5RV, W5GI, NVIS, Fan Dipole antenna systems. Custom antnna Builder.

Taoglas antennas - Antennas for asset tracking, navigation and remote monitoring GPS, GSM, GPS/GSM, Satellite Radio, WLAN

Batteries and gadgets - Your source for weather radios, communication headsets, 14 channel radios, M&M groovy radios, smithsonian crystal radio and weather station kits, line restrictors, antennas,ham radio accessories, and battery products.

eBay Store - ON Antennas J Pole - Buy ham amateur radio, antenna, j pole items from ON ANTENNAS J POLE eBay Store. We sell ham amateur radio, stealth wire, 2 meter, vertical items on eBay.

Colboth - Antique and ham radio repair - Repair and restoration of not just antique tubed radios, but also new solid-state Amateur Radio products also!! Also, electronic kit building and troubleshooting, antenna grounding kits and products.

Nec2Go - Powerful antenna modeling tool using NEC 2 computing engine. Nec2 specifically provide users, either those experienced with the Nec2 processes, or for those who are neophytes but want to model their own antennas. Nec2Go uses a simplified process for defining the antenna structure and then providing view of the structure, plots (2D and 3D) and other significant data that is pertinent to the design. This simplified process uses an edit file with equations for all definitions.

Antenna Noise and Signal Cancelling at LF - By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.

VNA-dsp / Antenna Analyzer - This project is an attempt to build a portable standalone VNA (Vector Network Analyzer).