Search results

Official, and updated CQ Magazine Countries and Zone List available in various formats, text, word and excel formats.

Excellent slides explaining radio and radiowaves generation basics

This program will convert comma delimited ASCII files to ADIF format for import into a logging program that supports ADIF import. The program is intended to be used with comma separated text files produced with other logging programs or with spread sheet programs, such as Excel.

This 40 meter Inverted V antenna was tested and tuned at a height of 35 feet and proved excellent results. The ends of the antenna are about 11 feet above the ground. Article and video available

CI-V OCX For The Icom 756Pro allow you to interface your own application or visual basic, excel, word or similar custom applications to your icom radio.

Specialized amateur radio club devoted to the pursuit of operating and technical excellence in radio contesting

An active receiving antenna for 10 KHz to 20 MHz, a very small sized antenna with excellent performances in noise to signal ratio.

An extension of the excellent decoding software JT65 HF by Joe W6CQZ for amateur radio digital mode JT65

At the moment the most used program is UA1AAF. It is an excellent program written by Boris, UA1AAF, to handle ARI International DX Contest. It can simulate K1EA or N6TR workings; it will be possible to connect the RTX to the computer using a standard interface in such a way as to transmit directly in CW from the keyboard; most of the controls are like K1EA's CT and N6TR's TR ; on line help provides almost all the information necessary for using the program. Is possible to insert QSO after the contest. An appropriate utility in included for conversion in ADIF format. The program is very small and therefore works without any problems on any IBM compatible computer with DOS 3.3 and over or Windows 95/98.

An excellent introduction to ham radio bands, which bands to use and when.

Micophone for excellence acustic

ARRL article on random wire antenna, simple antennas that can be tuned for every band, excellent solution for field day operations

An excellently presented article on the design and construction of a medium wave DX Antenna

A Loop Fed Array Yagi antenna for 50 MHz featuring 11 dBi gain and 23 f/b ratio. In this excellent page the author even includes a detailed drawing in DWG format, with element lenght and spacing measures, in a separa file a full list of material list needed to build this yagi antenna including source and price, the EZnec file for this antenna plan, and a lot of pictures of this LFA Yagi for 50 Mhz. A ten page PDF file containing all infos, is also available to download.

Demonstrates a practical online tool for locating amateur radio operators by geographic area, specifically using US ZIP codes. This utility allows users to input at least three digits of a desired ZIP code to retrieve a list of active licensees. Search results can be sorted by _call sign_, name, license expiration date, or ZIP code, providing flexibility in data organization. The service offers two primary output formats: direct display in a web browser, which omits address details for privacy, or export to a tab-delimited file, which includes full address information suitable for import into spreadsheet or database applications like _Excel_. This lookup service proves useful for local club organizers seeking to identify potential members within their service area or for hams planning local nets or events. The ability to export data with address details facilitates direct mailings for club newsletters or event announcements, while the browser view maintains privacy for casual lookups. The tool's design prioritizes ease of use, requiring minimal input to generate relevant local amateur radio contact information.

Otto engineering is comprised of two divisions otto controls and otto communications. otto controls designs and manufactures a full line of switches and grips used in heavy equipment, aerospace, marine, medical and other demanding applications. otto communications designs and manufactures audio accessories for two-way radios used in public safety, police, fire, retail, hospitality manufacturing and other markets.

Over two decades ago, the Kenwood TS-850S HF transceiver established itself as a robust performer, known for its excellent receiver and versatile operating features. This vintage rig, often found on the used market, continues to be a favorite among many amateur radio operators for its solid construction and reliable performance across the HF bands. Adrian's Yahoo! Group provided a dedicated forum for TS-850S owners to exchange insights, troubleshoot issues, and share modifications or operational tips. Such community-driven platforms were crucial for extending the operational life and maximizing the utility of classic transceivers, fostering a spirit of mutual aid among hams. Discussions frequently covered topics like DSP unit upgrades, common repair challenges, and optimizing the rig for contesting or DXing, reflecting the enduring interest in this particular Kenwood model.

The grounded half loop describe in this article is basically a half wave length wire on 80 Meters. The 80M grounded half loop antenna, inspired by a 1984 QST article by SM0AQW, is a compact solution for limited spaces. Comprising a 127-foot wire fed against ground and supported by radials, it balances performance and practicality. Despite compromises in length and proximity to structures, the antenna delivers strong signal reports and effective multi-band tuning using an SGC 237 antenna coupler. Ideal for CW operation, it offers low SWR on 80-10M, though noise levels and safety considerations warrant attention. This versatile design excels in constrained environments.

A 2m 70cm Dual Band J-Pole antenna for 35 USD. An excellent performing J-Pole type antenna, constructed from readily available materials.

Special purpose amateur radio club devoted to the pursuit of operating and technical excellence. This site serves as a library of amateur radio contest and DX information.

Thierry Lombry, LX4SKY (aka ON4SKY) has developped a excellent educational website mainly devoted to amateur astronomy but it includes also a large section dealing with amateur radio activities includes several interesting pages about radio astronomy and SETI

WeatherExperts.Com, the premier online store for weather stations, instruments, anemometers, barometers, accesories, and satellite pictures. Excellent prices!

An excel spreadsheet that in a really simple way checks how much to trim your antenna elements. Download the xls file and watch the presentation video include in this page

Experimenting vertical wire antennas for 40 and 20 meters supported by balloons resulting in excellent gain in RX and good overall performance against horizontal dipole

This simple utility is intended to facilitate the coversion of a properly formatted ADIF file to a delimited text file. This file may then be used for import into such applications as MS Excel or others.

Excellent article and guide to choose the best RF power amplifier that fit your needs by ON4SKY

This program converts an ADIF report file from ARRL's Logbook of the World (LoTW) to comma-separated value (CSV) format so that it can be read into a spreadsheet program like Microsoft Excel.

A few pictures of an homebrew magnetic loop RTX antenna project, working from 30 to 12 meters with excellent results

MS Excel document that allows you to plot SWR, resistance, reactance, impedance magnitude and angle and more from a variety of sources

How do two-wire reversible direction Beverages work, an excellent document that explains fundamentals of beverage antennas. This article details the design and performance of a reversible beverage antenna. Leveraging orthogonality between common mode and differential mode currents on a 2-wire line, this antenna facilitates independent reception from both ends. While common mode signals arrive and are summed on a transformer's secondary for common mode reception, differential mode signals induce anti-phase currents, providing individual reception. Various measurements explore impedance, transmission loss, and F/B ratio, highlighting the antenna's effectiveness and areas for improvement. Notably, increasing the antenna's height significantly improved performance.

Moxon is a rectangle shaped directional antenna, originally designed by Les Moxon G6XN. There are couple of advantages of using this antenna. It is small in size, Easy to mast, Balanced to 50 Ohms, Near 1:1 SWR, Excellent Front to Back (F/B) ratio, Large bandwidth

If you want to design vertical antennas you can find all theory and formulas used to model a vertical aerial calculating capacitance, reactance, building the inductor and calculating resistances. Includes an excel spreadsheet to calculate efficiency.

IK2ANE mantain a list all italian repearers in excel format.

Automated use of EZNEC. AutoEZ is an Excel application that works in conjunction with the EZNEC antenna modeling programs and allows you to use variables to control diverse aspects of the model. You can then run multiple EZNEC test cases while AutoEZ automatically changes one or more variables between runs. Commercial version and free demo available for download.

This article describes the development of two tunable antennas each consisting of three interconnected small loops and capable of providing excellent DX performance. The aerials are home-constructed, and located in a very small garden with a minimum of visual impact on the neighbours and are low enough in height to avoid the attention of UK planning authorities.

Little circuit of a Morse Code Oscillator is presented here. Excellent for learning and teaching Morse code

Complete collection of the four main parts of this excellet research on modelling and designing half wave dipole antennas for 40 meters band, covering all aspects beginning from full wave length antennas, to shortened, loaded and reshaped dipoles

Radios 4 you inc. where quality radios and other electronic products are blended with fair prices to produce excellent value for you. radios specializes in shortwave radios, solar rechargeable radios, am radios, and fm radios for sale.

An excellent and comprehensive article on portable HF operations with attention on selecting proper equipment

This EXCEL Program Worksheet calculates the common-mode impedance of a 1:1 Guanella (current) balun which is placed at the feed point of a balanced antenna system fed via coax.

How is your SWR - determine the power loss to expect for a given SWR, includes an excel spreadsheet by n3ujj

Documentary and seminar videos for and about Amateur Radio, on DVD and online. Some make excellent club meeting programs.

An interesting article about amateur radio portable operations with excellent pictures. Setup includes a 60 watts of portable solar power being controlled by a charge controller, and a batteries powering an FT-897D.

An excellent guide to operating FT8 mode available in English, German and Czech that cover several aspects of the FT8 operations. Includes and exaustive guide to how configure FT8 software, how to conducto a QSO and how to operate DXPeditions in FT8 F/H mode. Covers aspects of FT4 contesting operations and interfacing with logging programs

The GN9120 is an excellent bluetooth type headset. Here an article about GN9120 Wireless Headset Conversion for Ham Radio with PTT

An excellent guide on choosing external audio equalizers by K3DAV

The OCFD Off-Center-Fed Dipole Antenna is an excellent multiband antenna that is relatively simple to construct, yet gets quite decent performance.

NYQsl.com - Full 2-sided color cards of excellent quality. Individual designs available. Fast turnaround based in NY USA

This resource, despite its title, does not provide information relevant to amateur radio operations or the W1BD Central Vermont Amateur Radio Club. Instead, the content focuses on commercial topics such as vinyl lettering, business signage, and brand recognition strategies. It details the application of _transfer tape_ for graphics, the importance of pre-masking in vinyl cutting, and the use of squeegees for smooth decal application. The site also discusses various types of business signs, including monument signs and awning signs, highlighting their role in attracting customers and establishing brand presence. Further sections delve into home maintenance tasks like gutter cleaning, offering advice on using power washers and the importance of safety measures when working on ladders. The content also explores strategies for building brand recognition and customer loyalty, emphasizing consistent marketing efforts and excellent customer service. It touches upon the use of custom-printed bags and digital displays, such as LED signs, for enhanced visibility and engagement. The site's articles include practical tips for kitchen renovations, such as upgrading cabinet hardware, adding pendant lighting, and repainting cabinets to achieve a fresh look without significant expense. The content is entirely unrelated to amateur radio activities, club information, or technical aspects of radio communication.

An introduction to digital modes DMR Fusion and D-Star. This excellent article will guide you to learn differences between these digital modes by evaluating costs, ease of use and programaming, extendability and more characteristics.