used ham radio

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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
[ Hits: 6869 | Votes: 4 | Rating: 5.25 ]
QM7 7 elements 144 MHz Yagi-Uda Antenna - The QM7 antenna is a simple 7 elements Yagi with 3.70 m boom length for the lower 144 MHz SSB/MGM band, used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 11.35 dBd; i.e. 13.5 dB forward gain over the isotropic radiator, while the F/R is about 12.5 dB
[ Hits: 5361 | Votes: 15 | Rating: 5.27 ]

J-Pole theory ^pop - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
[ Hits: 30319 | Votes: 26 | Rating: 6.87 ]

Portable HF Antenna for the field day - This article describes a project of asymmetrical hatted vertical dipole, a portable antenna that can be used for field day operations, sota, campings or even for fixed installations. This is a freestanding 20-10m antenna that is really easy to build, easy to tune and relatively easy to carry.
[ Hits: 1645 | Votes: 2 | Rating: 7.5 ]

Cubical Quad Antenna Design ^pop - By N6VNG, can be used to determine the element lengths and the gamma match values for different frequencies, includes link to excel files with formulas to dimension your quad antenna.
[ Hits: 30805 | Votes: 88 | Rating: 5.74 ]

Boneyard Bluebook - The Non-commercial online Radio Pricing Guide. Used Amateur Radio Prices Seen Various Places
[ Hits: 1338 | Votes: 2 | Rating: 7 ]

HamLog.eu - This online database, called HAMLOG, can be used free of charge by any radio amateur worldwide.
[ Hits: 672 | Votes: 1 | Rating: 10 ]

ATV-TV.org - Welcome to the Amateur Television Directory, the source for finding sites related to Amateur Television and Ham Radio. Find out where Amateur Television is being used in your state or country.
[ Hits: 1087 | Votes: 1 | Rating: 7 ]

The Adcock HF RDF Antenna - The Adcock antenna has been used for a long time for RDF. It is basically an interferometer.
[ Hits: 5688 | Votes: 13 | Rating: 6.24 ]

C.C.C.Radio U.K. - CB and HAM radio store, new and used, also trucking accessories stocked.
[ Hits: 5219 | Votes: 27 | Rating: 7.57 ]

Memphis Amateur Electronics, Inc. - New and used ham radio equipment supplier. we carry hundreds of ham radio products including amateur radios from alinco, icom, kenwood, and yaesu, plus ham radio products from mfj, ldg, diamond antennas, hustler, ameritron, astron power supplies, and books .
[ Hits: 2252 | Votes: 2 | Rating: 10 ]

Frequency Filer - Frequency Filer is database program designed for people who use a great many different radio frequencies. It is primarily intended for amateur radio operators, short-wave listening enthusiasts and scanner users. The program makes it easy to keep all of your important frequency information in one place, displayed in a logical format to facilitate easy retrieval. Frequency information can be displayed as a list and can be viewed on a world globe. Other features include easy data backup and custom field names. Included is database import utility that can be used as a general file conversion utility. The globe display can also be used as general geographic aid for countries, cities, states, rivers, and lakes. You may even find your home town. Windows Shareware
[ Hits: 4426 | Votes: 6 | Rating: 6.5 ]

Radio Distance Software - This is a trivial program which calculates the distance and the bearing between two points. Points are either entered as geogr. data (Latitude/Longitude) or as qth-locator in the Maidenhead format (6 or 8 digits), as used in ham radio. Output is in degrees [°] for bearings, in Kilometer [km], US statute miles [mi] or nautical miles [nm] for distance
[ Hits: 11331 | Votes: 18 | Rating: 6.05 ]
HamGrids - Windows application that will allow you to perform calculations with the popular Maidenhead Grid Square system. This grid system is used worldwide by amateur radio operators for many aspects of ham radio.
[ Hits: 11013 | Votes: 7 | Rating: 6.85 ]

CQRLOG - Advanced ham radio Linux logger based on Firebird database. Provides radio control based on hamlib libraries, DX cluster connection, QRZ callbook, a grayliner, ON6DP QSL manager database support and a most accurate country resolution algorithm based on country tables developed by OK1RR. CQRLOG is strongly focused on easy operation and maintenance.
[ Hits: 2727 | Votes: 9 | Rating: 7.22 ]
Grig Radio Control ^pop - Grig is a freeware simple Ham Radio control (CAT) program based on the Ham Radio Control Libraries (Hamlib). It is intended to be highly generic presenting the user to the same graphical user interface regardless of which radio is being controlled. Grig supports the most commonly used CAT commands that are implemented by Hamlib, and integrates well with other ham radio programs like Xlog and gMFSK. Grig has been developed on Linux, but has been ported on Mac and Windows OS.
[ Hits: 26711 | Votes: 17 | Rating: 6.12 ]

MacTNC - MacTNC is simple, configurable terminal software used by amateur (ham) radio operators to control a TNC (terminal node controller). MacTNC performs most of the same functions of other terminal software, but includes buttons for standard commands, and allows the user to configure additional buttons for special purposes. MacTNC works only user Mac OS X because it relies on Unix components of the current operating system.
[ Hits: 7143 | Votes: 11 | Rating: 6.94 ]

HAMIC - The Ham Intelligent Calculator - HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.
[ Hits: 1775 | Votes: 2 | Rating: 5.5 ]

80m SSB & CW transceiver - The 80m SSB & CW transceiver design is based on an already proven concept used in ATLAS amateur transistorised transceivers from 70's
[ Hits: 10776 | Votes: 16 | Rating: 5.19 ]

Programming VHF/UHF Radios - Programming a new VHF/UHF radio usually proves to be a frustrating experience for most new amateur radio operators. A new radio must first be programmed for simplex and repeater operation before it can be used to communicate with local hams.
[ Hits: 15780 | Votes: 29 | Rating: 6.45 ]