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This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

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.

Illustrates the global distribution of **DX-Cluster** nodes through an interactive map interface, enabling radio amateurs to visualize and access real-time DX spots. The resource provides direct TELNET and HYPER links for each node, facilitating immediate connection to various clusters for up-to-the-minute propagation information and station activity. This visual approach simplifies the process of locating and connecting to a suitable DX-Cluster, whether for local or international DXing. Amateurs can use this tool to quickly identify active clusters in different geographic regions, which is particularly useful for **DXpedition** planning or contest operations. The direct links streamline access, bypassing manual configuration for many cluster types. It serves as a practical aid for operators seeking to monitor band conditions, find rare DX, or participate in competitive operating events by leveraging aggregated spotting data.

The octoloop antenna is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe

VHF power amplifiers made in germany

PA11019 Travel loop antennas, these antennas cover 6.300 to 29.200 mHz , handle 35 Watts and have a packing size of 43 cm, ideal for fieldwork, or mobile operations.

Enables out-of-band transmit for 1.6 MHz to 54 MHz, Improved VHF recieve mod, other band expansions

The Powerpoint presentation below was given by Fred Hopengarten, K1VR, at the 1998 Dayton Hamvention Antenna Forum

Using moxon rectangles for WARC-Band antennas

Ham radio related catoons

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.

VHF, UHF page, technical articles, projects, datasheets

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

Largest hamfest in the SouthEast by The Orlando Amateur Radio Club

ON6MU Optimized 10 and 6 and 4 element UHF Yagi Antenna

Explains the Federal Communications Commission (FCC) vanity call sign program, outlining the specific rules and procedures for amateur radio operators in the United States to obtain a personalized call sign. It details the eligibility requirements based on license class, the application process using FCC Form 605, and the various group formats (e.g., _1x2_, _2x1_, _2x2_) available to different license classes, such as Extra and Advanced. The resource clarifies the priority system for vanity call sign requests, including previous holders and close relatives, and discusses the typical processing times for applications. It also provides insights into how the FCC assigns available call signs and offers practical advice for increasing the likelihood of securing a desired call, referencing the _ARRL Letter_ for updates.

This article documents an unobtrusive antenna for operation on 7MHz, primarily for contacts with stations at up to 1000Km range.

Search the online log of VP8PJ DX pedition to South Orkney Feb. 21, 2020 - Mar. 6, 2020 Log search offered by M0URX.

OE1MWW monopole antenna made with common RG 58 or RG 213 coaxial cable

Includes links and documentation on wifi antennas, 2.4 GHz Coffee Can Feed Antennas

HourWorld is a program with rich graphics that can show you what time it is in a certain part of the world, and well as demonstrate what is actually looks like over the globe.

G7LRR Amateur Radio Site,160m Helical Antenna

DX listening and broadcasting news

This little antenna is cheap and easy to build, lightweight, and very functional on 2 meters and 70 centimeters by NA4IT

A vertical linear loaded antenna for 2 meters band in italian

Sohl List of English language transmissions

Radio-TNC wiring diagrams index

A windom multiband antenna project with pictures and diagram for the 6:1 balun

Stone vintage radio describes early radio from marconi to the 1960s. its covers antique radio, wireless, tubes, valves, crystal sets, and battery radios. included in the virtual museum are hundreds of pictures, images, and descriptions of antique radios, articles, faq, sell, and buy a radio.

If you are looking for an easy antenna for your favorite band, you can't go wrong with an halfwavelenght dipole, all you need is 3 insulators and some wire

Rhombic antenna experiments by Jelmer PA5R

A direct drive ring radiator antenna for the 40 meters band by W6WYQ QST article.

N0KHQ Moxon rectangle for 17 meters, constructed from RG-58 coaxial cable

W0OXB All-band Centerfed Zep Antenna 160m-6m

40 meters elevated vertical antenna array at VA7ST

The dynamics of antenna design

A preamplifier project based on Rainer DJ9BV project, in french

W5GVE article on homebrewing a 144 MHz DDRR antenna for mobile use

Doublet multiband antenna for 80 to 10 meters band by

K0EMT 160 meters sloper antenna

VX-5R Loose antenna cure, Vx-5r Free Band, VX 5 R modification for German, VX-5R expanded frequency mod, VX-5R MARS/CAP & freeband mod

Why Multi-band Dipoles Need HEAVY Open Wire Line by Tom, K1JJ

Ground tracks are the trace of the satellite's path over the ground. Amsat, ISS, geosynchronous satellites, navigation satellites, weather satellites, Iridium satellites, visible Satellites. Requires Java

The FL-2100Z amplifier referenced in the following images is the 6-Band model covering 10m thru 160m (no WARC bands) and not the 9-Band version that included the WARC bands. Modifications, schematics and manual

AA5TB home made CW paddles, pictures and construction details

Calculate dimension for HB9CV directional antennas

Approximately 400 kHz is the primary frequency for Navtex broadcasts, a crucial maritime safety information system. This legacy software, _Frisnit Navtex Decoder_ version 2.1.5, provides a means to decode these messages directly from an amateur radio receiver's audio output, fed into a PC's microphone input. It operates by processing the audio stream, extracting the FSK (Frequency Shift Keying) data, and presenting the decoded text on a Windows platform. Despite being unsupported and no longer under active development, the application remains functional across a wide range of Microsoft operating systems, from _Windows 95_ through _Windows 11_. Its utility lies in offering a straightforward, no-cost solution for hams and SWLs interested in monitoring Navtex transmissions without specialized hardware. The software's design focuses on simplicity, allowing users to quickly set up and begin decoding maritime weather forecasts, navigation warnings, and other safety-critical information. It leverages the PC's sound card, making it accessible with minimal additional equipment beyond a receiver capable of tuning to the Navtex frequencies.

Kenwood UK web site

Compiled by Dan Stegner KC0OBU from FISTS CW Club member tips, amateur radio morse code procedures

Yaesu's FT817 and Super Antennas MP-1 review by George Heron, N2APB