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McMinn County Amateur Radio Club, Inc. (MCARC) Club Callsign KF4CFO.

Do you want to measure antenna impedance at resonance? With this Antenna Scope, you have a simple RF Bridge for getting started in an exciting part of Ham Radio, building your own Antennas that work well

October 2000 Ham radio dx-pedition

The Northern Alberta Radio Club serves Edmonton, Alberta and area.

The ATV User's Group is a subgroup of the Auckland VHF Group, Club call ZL1BQ, compromising of persons interested in the transmission and reception of Amateur Television

ITELITE manufactures omnidirectional, sector and directional antennas 900 MHz 2.4 GHz 3.5 GHz 5 GHz 5.8 GHz antennas.

Kennewick, Pasco Richland

Windows based programmer for the VX-170. Programming software for the yaesu VX-170

G/T (Gain-to-Noise Temperature) is a critical figure of merit for evaluating the receive performance of VHF/UHF antennas, particularly for weak-signal work like EME (Earth-Moon-Earth) or meteor scatter. This resource presents extensive simulation data for numerous 2-meter and 6-meter Yagi antenna designs, originally compiled by _VE7BQH_ (Lance Johnson). The lists, updated as of October 2017, include various antenna models from designers such as _DK7ZB_, G0KSC, and K1FO, providing key performance parameters. Each entry details the antenna's G/T value, gain, front-to-back ratio, beamwidth, and VSWR at specific frequencies like 144.1 MHz or 145.0 MHz. The data facilitates comparison of different Yagi configurations, including those with folded dipoles and varying intrinsic impedances, aiding radio amateurs in selecting optimal antennas for their specific operational needs on the 2-meter and 6-meter bands.

KP4AE webpages with photos and information about SSTV, from puerto rico.

Ham satellites, 50 MHz, my hobbies, links.

The **KC0KJF** personal amateur radio page provides a collection of resources for fellow hams, particularly those interested in operations within southwest Missouri. It offers detailed listings for **Missouri repeaters** on both 2 meters and 70 centimeters, serving as a practical reference for local VHF/UHF communication. The site also includes information about the operator's station setup and antenna projects, such as a dipole and a bazooka antenna, which can offer insights into basic antenna construction and deployment. Beyond local repeater data, the page features links to the FCC Part 97 rules, essential for understanding amateur radio regulations. The operator, licensed as a Technician Class since April 16, 2001, shares his journey from Citizen's Band Radio to amateur radio, driven by a lifelong fascination with shortwave listening. This narrative provides context for the resource's focus on practical operating information and foundational regulatory knowledge. Additional content covers specific equipment like the 2-meter/70-centimeter Arrow Antenna, useful for hams considering portable or fixed station VHF/UHF setups.

Amateur Radio operator from Chennai (Madras),Tamilnadu, India

CMSK is a narrow-band weak signal digital mode for LF and MF ham radio bands defined by ZL2AFP. CMSK63 is the windows client program.

An Antenna Mast Idea for a VHF/UHF antenna

Xenia, Ohio Ham radio club, formed because of the Tornado of 1974.

An easy to build with a cheap HEMT FET Transistor Low noise preamplifier with FHX35LG based on JH0WJF design

Irish ham and Vhf radio info. Logs and maps worked, no excuses, this is mainly a VHF site

PropNetPSK is a PSK (Phase Shift Keying) program capable of receiving multiple signals (2 - 16) at one time for the exclusive use to decode a properly formatted PropNetPSK beacon signal. If you are looking for a Keyboard to Keyboard type of program, this will not fit your bill.

Assembling the Butternut HF9v HF vertical antenna

A NEC Model Comparative Analysis of Physical Orientation and Performance. The small magnetic loop is a useful compromise antenna for limited space and portability. For this reason, the magnetic loop antenna is a practical high frequency antenna solution for the restricted space of apartment dwellers

HB9BZA's LoTW users list, originally compiled since 2005 from DX-Cluster and user submissions, now primarily leverages the official ARRL full users list released on July 29th, 2017. This resource details 228,012 calls across 340 current DXCC entities, with the latest update noted on March 2, 2026. It offers various formats, including a full list, text versions, and breakdowns by country, providing valuable insights into LoTW participation for DXers. While the ARRL's official list with "last upload" dates diminished the original list's unique utility, HB9BZA's site continues to offer statistics and user counts by country, which remain of interest. The author, HB9BZA, expresses gratitude to contributors who helped maintain the list's accuracy over many years, achieving an impressive 96.4% match with the ARRL's data before the official release. Knowing which stations are LoTW active encourages more hams to join the system, demonstrating that even rare DXCC entities like Ducie Island or Heard Island can be confirmed quickly. For instance, HB9BZA recounts a 36-minute QSL confirmation for a 3A2MW contact. The list also integrates with the RXCLUS packet radio/telnet client, enhancing DXCC award tracking by identifying LoTW participants and utilizing upload dates for alarms.

Come with us and enjoy our voice chat from Chicago, spanish and english.

vk2aac amateur radio station web pages

A 4 elements Yagi-Uda antenna for 144.3 MHz plan with dimensions and yagimax dimension calculation

The supporting structure is a 15-m-glassfibre mast of DX-Wire. The antenna can be used on all bands from 10 to 40 m.

75m Mobile Texas Bugcatcher Loading Coil Measurements

The Amateur Radio Association of Bahrain (ARAB) was established in 1970 to support the amateur radio community within Bahrain, operating under the **A92C** callsign. This organization provided a central point for local hams, fostering activities and representing their interests for several decades. Its historical presence is noted, even though it is no longer active. Unfortunately, due to unforeseen circumstances, ARAB ceased its operations. However, a new amateur radio society has since been formed in Bahrain, continuing the tradition of supporting local hams. Interested individuals can contact Fawaz, **A92AA**, for details regarding membership and the new society's activities, ensuring continued amateur radio presence in the region.

TSC International produces soft magnetic sheet steel, custom-stamped and heat-treated to achieve optimal electrical characteristics for applications such as motors, generators, linear power supplies, and ballasts. The company's manufacturing process focuses on precise material engineering to meet specific performance requirements in various electrical systems. They also specialize in soft magnetic core materials essential for transformers, chokes, and inductors. These core materials are utilized in power supplies, lighting ballasts, signal conditioning circuits, inverters, and battery chargers, providing critical magnetic properties for efficient energy conversion and signal integrity. Located at 39105 Magnetics Blvd, Wadsworth, IL 60083-0399, TSC International provides contact via sales@tscinternational.com or phone at +1 (0) 847 249 4900, facilitating direct inquiries regarding their magnetic component offerings.

This page is to provide links to resources and information regarding technologies to reduce computer interference

The Lake Monroe Amateur Radio Society serves Seminole County and Central Florida, operating two 2 meter repeaters on 147.285 +600 and on 146.805 -600

Welcome to SW2A special contest station, with photos, logs and results

New Zealand Amateur Radio 70, 32 & 23 cm (UHF) Repeaters

Contesting resource pages by OH1NOA

Homebrew your PC sound card to radio interface with this circuit obtained from the pages of Ernie Mills WM2U.

This article describes a generalised unit for interfacing a transceiver's TTL/CMOS interface to RS-232.

HIDEXA Dedicated To The Pursuit Of Worldwide DX

LX5A pictures results LX9SW

Building a Resonant Feed line Dipole for 2 Meters

Eham review for FT-1000d version

An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.

Live audio of the National Hurricane Center’s Skywarn Nets. This live feed covers several different states, and locations throughout the US including: TX, LA, MS, AL, FL, GA, SC, NC, VA, MD, DE, PA, NJ, NY, CT, RI, MA, VT, and ME

Experimentig magnetic loop antennas for VHF and HF by M0UKD

Alexander The Great AWARD from Northern Greece Contest Team

Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve. Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.

G3SEK answers to some practical questions on builing the N2PK VNA Vector Network Analyser

K8GP web site, home of the Grid Pirates Contest Group.

How to design narrowband bandpass filters