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Well documented Amateur Radio HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, related accessories, vintage radios, Six meter equipment, and useful techniques by K8CU are inside.

An easy to make HF low pass filter form high power

If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter

Amateur Radio and Computer Show in BEREA, OHIO

Looking for Hams that want to experiment on VHF/UHF PSK/digital modes

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

Tunes symmetric/coax/longwire antenna's between 1.8-50MHz

Here is the parts list and dim. sheet for a 6m Square Copper Dipole, made from copper water pipe

ARRL Laboratory Expanded Test-Result Report Kenwood TS-2000 prepared by American Radio Relay League, Inc. Technical Department Laboratory in pdf format

Features and specifications for discontinued yaesu ft-100d radio

Free Russian hamradio server special for radiofanats from CIS. Search engine on callsigns, electronic circuits and hamradio programs in www powered with knowledge base.

Eham members Yaesu VX-7R review

Classified ads at eham dot net. Buy and sell your second hand amateur radio equipment

RemoteHams.com permit to display and control transceivers all around the world

Antenna data, and design note for this horizontal loop antenna resonating on 80 Meters by K0ZE

A project for a 144 Mhz halo antenna

CQiNet is a family of programs that combine Ham Radio with the Internet using Voice over IP (VoIP) technology. Two programs are currently in the family, "theBridge" and echoLinux. Thebridge is a iLink/EchoLink compatable conference bridge that runs under various versions of Unix as well as Windows. EchoLinux is a EchoLink client program for the Linux operating system.

The Yaesu FNB-78 Battery plugs into the FT-897/D. It produces 13.2 VDC at 4500 mAh. The radio can hold one or two and one can be in use while the other is charging.

Dedicated to building bridges between the EME, SETI and Radio Astronomy Amateur Interest Groups.

An introduction to PSK31, MT63, and Hellschreiber, John DeGood NU3E Trenton Computer Festival in PDF

For amateur radio operators seeking to confirm two-way radio contacts, a QSL card serves as a traditional, tangible verification. ON5UR QSL Printing provides a service for designing and printing high-quality, full-color QSL cards, including options for full-color backsides. The service offers various paper weights, such as 250, 280, 300, and 400 grams, allowing hams to select a card stock that meets their preferences for durability and feel. Pricing structures are detailed for different quantities, with 1000 cards starting at 96.00 Euro for 300-gram stock with gloss laminate, inclusive of design costs. The service includes free QSL cards with larger orders, such as 500 free cards with a 2000-card order, or 500 free cards with a 7000-card order. Shipping costs are categorized into six zones, primarily covering Europe, with specific pricing for countries like Belgium (Zone 1) and a request-based system for other regions and export conditions outside Europe. Testimonials from operators like M0URX highlight the design quality and quick turnaround, which are crucial for DXpedition QSL managers needing efficient processing.

Publication for the video aspects of ham radio

This resource presents over 100 Q-signals, each with its corresponding question and answer format, as standardized by the International Telecommunication Union. The content delineates how these abbreviations can be expanded with additional groups, call signs, place names, or numerical data to provide specific context. It clarifies that a question mark following an abbreviation or its complementary information transforms it into a query. The document highlights that these operating signals, or Op Sigs, are prescribed for international use across all communication types, including military and non-military applications. It references their inclusion in Appendix 9 to the Radio Regulations Annex of the International Telecommunications Convention (Atlantic City) 1947 for QRA to QUZ blocks, and ICAO publications Dec 6100-COM/504/1 for QAA to QNZ blocks. The page specifically marks Q-signals of particular interest to amateur radio operators in red. The utility of Q-signals for concise communication in radiotelegraphy is evident, providing a structured method for conveying complex information efficiently. The resource serves as a practical reference for operators needing to quickly interpret or formulate messages using standardized codes, particularly beneficial for CW operation and international contacts.

The **Black Cat CW Keyer** is a macOS application designed for amateur radio operators to transmit Morse code directly from their computer. It provides functionality for typing text to be sent, either immediately or buffered, and allows for the creation and transmission of pre-defined messages via single-key shortcuts. This software addresses the need for a flexible and accessible CW keying solution, particularly for Mac users who might find fewer dedicated ham radio applications compared to other operating systems. It integrates basic text-to-CW conversion, offering a straightforward interface for generating Morse code signals. Operators can utilize the Black Cat CW Keyer for various CW activities, including casual QSOs, contesting, or beacon operation. Its ability to buffer text allows for smoother transmission, while the single-key macro feature streamlines repetitive message sending, such as CQ calls or contest exchanges. While specific comparisons to other CW keying software are not detailed, its macOS focus provides a niche solution for Apple users. The program's utility lies in its direct approach to computer-based CW transmission, making it a practical tool for those seeking a dedicated **CW keyer** on the Macintosh platform.

There are many kinds of satellite antennas that will get you on the birds and allow you to have lots of fun

Manufacturer and direct seller of shortwave and ham radio antennas and accessories like TINYTENNA & YO-YO-TENNA

Accessories for your hamshack, such as Band Decoders, various types of Antenna Switches, Antenna Stacking devices, special devices designed dedicated for the SO2R operating technique, USB Interfaces, cw keyers and many others

Amateur radio programs to download, locator , log, etc... for Psion Aprs maps for PC (ui-view)

NU9N recomendations for processed SSB, ESSB, AM Hi-Fi, Mid-Fi, Amateur Radio Audio Setup for transmiters, receivers and Amateur Radio Recording/Playback

Rolling your own transformers and chokes. Rewinding salvaged power transformers, considerations and step-by-step guide

CB2HAM is a group for licensed radio amateurs focussed on converting quality CB radios over to the Ham bands.

A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth.

Largest hamfest in the SouthEast by The Orlando Amateur Radio Club

Presents an online callsign lookup service, QRZ.RU Callbook, which offers a searchable database for amateur radio operators. The resource details its extensive collection, including more than 50,000 records for **CIS (Commonwealth of Independent States)** callsigns and over 1,400,000 international entries. It enables users to search for existing callsign records and facilitates the creation of new entries, contributing to a dynamic and expanding repository of amateur radio data. The platform's primary function is to serve as a **callbook**, providing contact information and other details associated with specific amateur radio callsigns. Access to detailed information within the database is available to registered users, indicating a tiered access model for its comprehensive data. The service is maintained by Sergey, UA9OTY, ensuring a degree of accountability and expertise in its operation.

Radio-TNC wiring diagrams index

Bill Orr W6SAI ham radio techniques. Improving ground connection, computer analysis of the antenna, modelling sample antennas pdf file

The dynamics of antenna design

The K8ZT website provides a curated collection of amateur radio resources, encompassing software tools, informational articles, and external links relevant to various aspects of the hobby. It features utilities for _log analysis_, insights into QRP operations, and guidance on obtaining vanity callsigns. The site also includes sections dedicated to shack design principles and general ham radio information, reflecting a broad interest in practical station setup and operational enhancements. Specific software offerings are presented alongside discussions on their application, such as tools for analyzing contest logs to identify operational efficiencies or areas for improvement. The content often integrates personal experience with technical explanations, providing a practical perspective on topics like antenna selection for low-power operations or optimizing station workflow. The resource distinguishes itself by combining software recommendations with contextual information, aiding operators in making informed decisions about their station's technical and operational aspects.

For amateur radio operators seeking a specific call sign, RadioQTH offers a specialized online service to track FCC vanity license applications. The platform provides detailed listings of ham call signs from the FCC database, indicating those becoming available for vanity requests on specific dates. Users can access links to future availability, view recently granted vanity applications, and check the current status of applications already filed with the FCC. The data is sortable by call prefix, district, or suffix, facilitating a targeted search for desired call signs. This resource leverages real-time FCC data to assist hams in navigating the vanity call sign application process. It serves as a practical tool for predicting when a call sign might be obtainable, which is crucial for operators planning to upgrade or personalize their station identity. The site's functionality helps users monitor the progress of their own applications or identify potential call signs for future acquisition, streamlining a process that can otherwise be quite opaque.

This project is intended to aid in tuning a balanced antenna or feedline that has a high impedance 100-600 ohms

Project of a windom multiband antenna for 10 to 80 meters in portuguese

Pictures and circuit diagramm to build this power amplifier for 2 meters

This software predicts future passes for amateur radio satellites for a specified location and period of time. It runs on the Android operating system

Comparison chart between Cushcraft R8, Hy-Gain AV640 , Butternut HF6V, Gap Titan and Eco 7+

A 144 MHz six element yagi beam antenna plan

A few images to use as a desktop background.

Rochester Hamfest and Computer Show

eham FT-1000MP MKV review

Morse Code Keyers / Processors and other PIC products. CW RTTY serial and usb interfaces and keyers kits.

ARS repairs all major brands of Amateur Radio equipment (Icom, Kenwood, Yaesu, Alinco, etc.) in our Portland Oregon area service facility