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March Paddle by K4QU

Despite the title referencing the callsigns 3C5J and MW0BRO, the content of this resource focuses entirely on the _Cleddau Computer Clinic_, an IT services company operating in Pembrokeshire since 1999. The site outlines a broad range of computer-related services, including custom-built new PCs starting from £399, sales of used systems, and comprehensive repair and upgrade options for existing units. Services extend to anti-virus and spyware removal, system installation, and broadband connection setup. The clinic also provides tuition for hardware and software applications, website design, and video to DVD transfer. They specialize in both fixed and wireless network solutions, enabling clients to share files and broadband connections efficiently. Repairs can be conducted either in their workshop or at the client's home or office, offering flexibility. For situations where on-site repair is not feasible, the Cleddau Computer Clinic offers a temporary replacement computer service. This includes transferring essential data to minimize disruption, a practical approach for local businesses and individuals in areas like Pembroke, Milford Haven, and Haverfordwest.

Fox hunting site with details of a PC based DF system

RCKLog is a windows freeware program for logging and administration of SSB and CW-Contest with simultaneous control of transceiver and real-time operation of Packet-Radio.

Ham radio site with Amateur Links is a collection of over 2800 Ham Radio sites services verified each week. Interesting content for beginners and seasoned ham operators alike.

cocoaNEC 2.0 is an opensource Mac OS X application intended primarily for the design and modeling of antennas by Kok Chen, W7AY

Transistor and its history and lot of related infos

Over 47 full-screen maps are available within _NAOMI_ (North American Overlay Mapper), a free Windows program designed for US and Canadian amateur radio enthusiasts. This mapping suite includes 9 backgrounds such as CQ Zones, ITU Zones, and ARRL Sections, along with 16 foreground layers like Counties, Areacodes, and Grid Locators. Users can calculate distances and bearings, track real-time mouse positions with continuous Grid-Locator data, and integrate with APRS for live station tracking via the FindU database. For a global perspective, the _Global Overlay Mapper_ (GOM) provides a world map, 8 continental maps, and 29 sub-continental maps, all with 12 active layers including Country Outlines, CQ/ITU Zones, and Prefix information. Both NAOMI and GOM offer feature-locate systems to jump to positions based on prefixes, capital cities, or Grid Locators, and provide customized beam headings and distance displays. The site also features _LogView_, a post-contest log visualization tool that analyzes Cabrillo-format logs by plotting QSOs on maps, supporting over 30 major contests like CQWW and ARRL DX, and allowing comparison with published results.

Ham homebrew, software, and ham info

5 elements Yagi antenna with an 8.7 db gain

This is a design for a stealthy HF multi-band vertical wire antenna using a tree as a supportby G7AQK

Free memory backup/restore program for the Yaesu VR-5000 receiver.

Online database: downloadable database, updated monthly. In norwegian.

A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz

4 Square Vertical Array website dedicated to vertical arrays antenna installations worldwide by G4ATA

G3XBM's Amateur Radio Page - with QRP, VLF and crystal set links

This interface is intended to be used with all the popular digital modes like PSK31, RTTY, Olivia, etc., which modulate a continuous carrier.

A delta loop antenna for the 4 meter band by GW7AAV

A simple coax dipole antenna for 144 MHz by 9A7PJT

Experiments with spiral dipole antennas. Includes two spiral antenna designs for 20 and 40 meters band by KN9B

Homebrew-page of PG1N with lots of homebrew links

The Icom PCR1000 review by GW0KIG

Yaesu FT-2000 Panadapter, using the Softrock 9 Lite, SDR receiver kit

The ITU, headquartered in Geneva, Switzerland is an international organization within which governments and the private sector coordinate global telecom networks and services.

Audio files to help identify rf noise (rfi). Identify the RFI that interferes with your reception. RFI Noise identification.

This is an experimental CW transceiver for 80m, although the same idea will work on all HF bands

A magnetic loop antenna working from 30 to 15 meters with 100W

CWQSO allows you to practice sending and receiving morse code in a real QSO. You can send CW via the mouse buttons or an attached paddle, the CW you send is displayed on CWQSO

A page by 9A7PJT dedicated to HB9CV yagi antennas includes link to the HB9CV calculator program and some interesting plans

HAM-IV antenna rotor repari and restore

Mountain Thunder CB Radio Group is a group of CB SSB operators that started in the Pacific Northwest, Washington State.

The International Amateur Radio Union

K4JRG GAP titan dx specifications

The X80 multi-band HF vertical antenna, a commercial iteration of the Rybakov design, exhibits a physical length of 5.5 meters, or approximately 18 feet, and is constructed from aluminum tubing. It operates as a non-resonant vertical, requiring an external antenna tuner for impedance matching across its intended operating frequencies. The antenna's design incorporates a 1:4 UNUN at its base, facilitating a nominal 50-ohm feed point impedance for the coaxial cable. Performance observations indicate effective operation on 40 meters, 20 meters, 15 meters, and 10 meters, with reduced efficiency on 80 meters and 160 meters due to its relatively short electrical length for these lower bands. Comparative analysis with a G5RV dipole and a half-wave end-fed antenna reveals the X80 offers a lower take-off angle, beneficial for DX contacts, particularly on the higher HF bands. Field tests conducted with an Icom IC-706MKIIG transceiver and an LDG AT-100ProII autotuner demonstrate the X80's ability to achieve acceptable SWR across 80m through 10m. The antenna's compact footprint and ease of deployment make it suitable for restricted spaces or portable operations, though its performance on 80 meters is noted as a compromise compared to full-size resonant antennas.

Cabrillo2Adif A software for converting the radio logs from Cabrillo to Adif log format (for Mac OS X)

Sams continues the tradition with the publication of new manuals every month, covering the latest in Televisions, including HDTV, Projections TVs, and coming soon, LCD monitors.

A simple to build full length 20/40 dipole antenna to be used in inverted vee configuration

Heathkit SB-220 Amplifier modification by KE5YA

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

Examines the historical role of telegraphy within Canadian railway operations, detailing the evolution of communication systems crucial for train dispatch and coordination. It covers the technical substance of railway telegraphy, including equipment, operational procedures, and the personnel involved, such as agents and operators. The resource provides insights into the **F59PH locomotive** history, development, and components, alongside diagrams of various parts like antennae and traction motors. The content also explores the practical application of these systems by documenting specific railway events, such as the CPR Galt Sub operations from 1895-1971 and GO Transit's operational history. It includes photo galleries, schematics, and diagrams of locomotives and cab cars, offering a visual and technical comparison of different railway equipment. The site also features information on **GO Transit** rolling stock, including MP40s and commuter coaches, providing a historical context for railway communication and transportation.

An indeal stealth antenna made by multiple quarter wave verticals, supported by a tree.

3D20CR Official website of Conway Reef DX Pedition 2009

"Shows who is ""active"" on VHF in EI, Solar Auroral and Tropo information, Vhf logs and maps."

The resource provides specific information regarding amateur radio operations from various French islands, focusing on geographical and visual data. It includes photographic documentation of locations and detailed maps, which are crucial for operators planning DXpeditions or seeking to understand the unique challenges and opportunities presented by island activations. The content aims to support enthusiasts interested in rare grid squares and IOTA (Islands On The Air) awards. While currently under maintenance, the site's stated future enhancements include QSL card examples, which would offer practical insights into confirmation processes for these specific entities. The emphasis on French islands distinguishes it from more general DX resources, providing a concentrated body of information for a niche but active segment of the amateur radio community, particularly those pursuing island-specific operating awards.

Fibreglass tubes, structural profiles and other composite materials all available from stock

2 transistor transceiver for 28MHz CW

PIC micro controller based frequency counter with LCD readout

Amateur Radio and SSTV Pasokon EZSSTV RAdio HAM Saw Proskan W95sstv Win95sstv Ham Software Radio MMSSTV shortwave listener Hamcomm interface Slow Scan Television Help with setting up SSTV website. G0HWC

70 MHz transverter, 4m band, by G3XBM

Review of Cushcraft MA-5B multiband Antenna after some days of usage.