most wanted grid squares

Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length

Folding the Dipole - Invented by Heinrich Hertz in around 1886, the half wave dipole is still one of the most simple and practical of antennas and still very much in use today. It consists of a half wavelength long centre fed conductor

L Match ATU for QRP - The L match is designed for the matching of random and long wires and should not be mounted in a metallic box/case, i used a small plastic food container which was the most expensive part of the project.

The Grid Yagi for 144 Mhz - The Grid Yagi (or Grid Quad) is a high performance yagi antenna that can be built with readily obtainable inexpensive materials. Described here is a 6 element 2 meter version with a boom length of about 1 wavelength, shown

The VHF Quagi - There have been many half-hearted attempts to combine a Yagi and a Quad. Most have produced questionable results. Well, here are the "true" facts, the real dope, the hot scoop. K6YNB in QST April 1977

10 Common Tower Building Mistakes - The 10 most common tower building mistakes written by Steve Morris, K7LXC

A Mini T match - KC8AON mini antenna tuner that tunes almost any antenna you connect to

A Z match tuner for HF bands - This small tuner by KC8AON has only 2 controls and will tune almost anything from 10 to 80

The N9RET beacon - Located at grid square EN61bu, in the heart of West Suburban Chicago, Illinois

The CQ DX Field Award - The CQ DX Field Award is issued in four categories—Mixed, CW, SSB, and Digital—for confirmed two-way contacts with 50 or more Grid Fields

North Georgia QRP Club - Small, but growing, group of amateur radio enthusiasts, most of whom are within 90 miles (and more) of Atlanta

Fortis Wind Energy - Fortis is the world leader in design and manufacturing of high performance stand alone and grid connected wind turbines in the range from 800 watt up to 10 kw.

Pierce Aluminum - Distributor of aluminum and a manufacturer of finished aluminum products. Pierce Aluminum offers a diverse inventory and distributes a complete line of sheets, coils, plates, bars, structural shapes, tubes, pipes and extrusions in the most varied alloys and sizes possible

Wholesale Parts of Florida LLC - Manufacturers of the world's most comprehensive and powerful line of antennas. TRAM antennas, CB VHF UHF Satellite Marine GPS antennas, masts and mounts.

WorkedGrids - WorkedGrids is a Windows application that displays a map showing the amateur radio grid squares contacted and logged in using a third-party logging program. WorkedGrids uses colors to display information on a per-band basis. Up to four bands can be displayed concurrently by VE2ZAZ Bert

K6MDD Mt Diablo D-Star - Mt. Diablo D-Star System is situated on the North peak of Mt. Diablo in California's East Bay 33 miles east of San Fransisco. At 3,600' the K6MDD System has excellent coverage of most of the Bay area !

Olivia, the Magic Digital Mode - Olivia MFSK digital communications are becoming popular in amateur radio because Olivia is one of the most robust methods of text keyboarding, that can perform superbly for long distance communications. Olivia frequencies, format and software

FILPRO - The most flexible and powerful Microwave and RF Filter and Multiplexer Design Software

W2IOL GCGC Distance/Bearing - Freeware dos and linux command line executables to calculate grid great circle/geodesic distance, azimuth/bearing and MUF calculator by W2IOL

DXFile - Windows shareware logging program, offer several features like packet radio interface, web cluster, grid square, beaming directions, qsl manager lookup, dx spot filtering by F6GQK in french.

GPSLocator - Use a pocketpc with serial or bluetooth GPS to calculatethe grid locator y IW2BSQ

iLocator for iPhone - A small application for Apple iPhone that calculate grid locator from gps, wifi or gsm cells by IW2BSQ

AA Battery Solar Charger - This almost trivial circuit may be used to charge a pair of AA or AAA sized rechargeable battery cells from sunlight.

Grounded Grid Amplifier - Picture of a power amplifier, made using of GI-7B triodes by Bob Briggs, VK3ZL

A spectrum analyzer for the radio amateur - Good tools are priceless when you need them. Here’s a piece of test equipment you’ve always wanted for your workbench