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Information about our local Echolink Node #1224, on Long Island NY

Measurements for building a full wave loop using wire

Specialise in the restoration and sale of vintage valve and transistor radios made from 1930 through to 1975

A moxon antenna project made with wires and fiberglass poles

The page, focuses on **TVRO** (Television Receive-Only) satellite systems, specifically addressing C-band and Ku-band reception. It covers technical aspects of digital video broadcasting, including **DVB** and MPEG-2 standards, relevant to satellite television enthusiasts. Content includes discussions on Digicipher 2 and 4DTV systems, which were prominent in North American satellite television at the time. The resource also references the South Scanner Satellite Services Chart (SSSSSC), a tool for identifying satellite transponders. While primarily about commercial satellite TV, the underlying principles of satellite signal reception and digital modulation have tangential relevance to amateur radio satellite operations.

An example of how to control a Yaesu FT-817 with an Arduino to make a multi-band CW beacon.

The Ak-Sar-Ben Amateur Radio Club, Inc. of Omaha, Nebraska is a general interest amateur radio club.

MUlti mode digital signal decoder software capable or C4FM D-Star decoding, a guide to compile and install DSD

Eham.net review of ICOM IC-2720H

APRS activity in Ohio

This page describes an cheap RF signal source, a portable micro beacon, using a low cost temperature controlled crystal oscillator

Receiver tests of some transceivers and receivers including FT-1000, FT-2000, IC-751, IC-756 IC-7800 and TS-870

Maker of optical spectrum analyzers, digital oscilloscope, digital power meters and more test equipmente related products

A comeplete home made 600W LDMOS RF power amplifier. Settings can be made on a 7-inch touch screen, and on this screen you can see a lot of useful information during operation, such as output power, temperature, SWR, and so on. The power amplifier includes 2 MRF300 LDMOS FETs and several built-in sensors. The amplifier also contains several types of protection functions like too high current, too high swr, too high temperature, etc.

Detailed pictures and description of antenna tower setup

This antenna is intended for the 20-meter Band. There are two Voltage Fed Helical Dipoles, made with 2 slinky that fed with phase shift in 90 degree

This circuit stores a single morse code message as bits in an EPROM chip, the message is sent to a relay which can key a CW transmitter.

NJDXA North Jersey DX Association is a platform maintained by Urb LeJeune, W2DEC, providing information about upcoming meetings, VE testing sessions, and the operation of the W2 QSL Bureau. The site offers resources for amateur radio operators in the North Jersey area to connect, share experiences, and learn from each other. It serves as a hub for DXing enthusiasts to stay updated on events and activities related to amateur radio. The intended audience includes hams in the North Jersey region looking to participate in club meetings, VE testing, and QSL bureau operations.

This project hereby presented is a complete HAM radio simplex 'smart' repeater, built around a Motorola GM-350/950, Arduino NANO board and a WINBOND audio recording integrated circuit

Serving the Jersey Shore for over 30 years.

Amateur Radio operation and weak signal detection pages by AF9Y

Professional paddles manufacturer based in Germany

This resource details the four primary functions of a ground system: lightning energy dispersion, equipment safety, RF return path provision for end-fed antennas, and management of induced RF currents. It clarifies that a ground system's effectiveness varies depending on its specific function, noting that a good lightning ground might not be an effective RF ground. The content emphasizes that proper antenna system design, including baluns and appropriate feedline lengths, often negates the need for an RF station ground to mitigate common mode currents or RFI in the shack. The article quantifies lightning energy, stating its peak is in the dozens or hundreds of kilohertz, with damaging energy extending to hundreds of megahertz, and currents reaching thousands of amperes. It recommends solid, wide, smooth copper surfaces for ground leads to achieve low impedance across a wide frequency range. The author, W8JI, shares practical insights from his station, which includes two 300-ft towers and four 130-ft wire verticals, detailing his use of common point grounds and _DX Engineering RR-8 HD_ antenna switches for lightning protection without coaxial surge protectors. Specific examples of antenna systems prone to common mode current problems are listed, such as random wire antennas without proper feedline lengths and off-center fed dipoles. The text also explains how a ground screen or radial system can reduce local noise sensitivity for vertically polarized antennas by covering the lossy earth.

Using the Raspberry Pi to operate Weak Signal Propagation Reporter

Special services club offering monthly meetings, training classes and general advancement of ham radio in the Northwest.

Earn your Technician or General Amateur Radio License in a one day course.

Preparing to contest, and get ready for action

Radio repeater

This page contains ideas, hints and tips about Auxiliary Items that will help you to enjoy the sport of HF Contesting without emptying the bank account

This article by Seabury Lyon, AA1MY describe how homebrew kits for amateur radio pourposes, in order to support wire antennas

Manufacturer of Select-A-Tenna Products since 1971 AM Radio Antennas

manufacture and sell unique, high quality, amateur radio products like HF and VHF antenna mounts

Web pages of TRAC istanbul city branch

Decoding NOAA APT weather satellite images is achieved with a homebrew receiver and a Turnstile Cross Dipole antenna, feeding data to a Pentium-3 500MHz PC running Windows XP and the WXTOIMG program. This setup, operated by VU2IIA in Mumbai, India, focuses on capturing and processing signals from NOAA satellites to generate visual weather data. The blog documents the technical aspects of constructing the receiving station, including antenna design and receiver integration. It provides insights into the practical challenges and successes of amateur satellite reception, specifically for Automatic Picture Transmission (APT) signals. Operational details cover the software configuration and image processing workflow necessary to transform raw satellite data into usable weather imagery. The content serves as a practical guide for radio amateurs interested in satellite meteorology.

Free Logbook conversion program that allows the conversion of some old DBF log files (DXLog, EasyLog, LogPlus, TopLog, TurboLog TotalHAM92) to the ADIF Format, 3.8Mb ZipFile

Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength

The 2 Meter 146mhz Slim Jim Antenna using aluminum tubing!

Italian site, for antique radios, with photos, collections, technical and forum

Amateur Television products, online store for ATV transmitters receivers, LCD controllers, wireless cameras, video senders, accessories, power amplifiers based in UK

An home made magnetic loop antenna project using a military surplus 150pf capacitor by KF5CZO

The resource, initially identified as "Alabama Radio," a dealer of amateur radios, antennas, CB equipment, scanners, and power supplies in Eastern Alabama, now redirects to a domain brokerage service. The original intent was to provide a commercial outlet for Ham Radio operators and CB enthusiasts seeking new equipment and accessories. This would have included transceivers, antenna systems, and various station components. However, the current content at the URL is _Startup Domains_, a platform for buying and selling premium .COM domain names. This shift means the resource no longer serves the amateur radio community directly. Instead, it focuses on digital asset transactions, with no mention of radio equipment, _DXing_, or _contesting_ activities. The original description of a regional radio dealer is no longer applicable to the live content.

ARRL members classified ads

PC-based oscilloscopes, data acquisition and data logger products, spectrum analyzers and voltmeters

64MHz to 1,700MHz Software Defined Radio

Rigpix page for Kenwood TS-590S

Collection of accessories that makes the Yaesu FT-817 more enjoyable.

2 Meter Slim Jim Antenna Using 300 Ohm Twinlead

Review by Clive Davies, G4FV

Speakers and RFI noise reduction products

Building the double size G5RV antenna, part list, assembly part, dimensions and assembly instruction in a pdf document