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The Sandy Amateur Radio Club was organized on September 25, 2014. It is open to any and all licensed amateur radio operators and anyone who is interested in the hobby

A Simple Serial and Sound-Card Interface for the Yaesu FT-857D using an FT232R USB-to-serial bridge chip.

Weblog from Florence Italy, with personal infos and updates on his ham radio activity

Tait Digital Mobile Radio (DMR) is an affordable digital communications platform that delivers a range of workforce efficiencies and operational benefits for mission critical users.

SMCC Amateur Radio Club - K9ONA

You can upload your adif-file It then checks the qso for specified band and if a maidenhead locator is specified. It then builds an array and plot a graph.

Article on common Classification of Spy Numbers stations.

West Fire and Police - Live Audio Feed Virginia

Radioamadorismo ,amador, ciência, comunicação, rádio, hooby, experiências from Brazil by PY3AB

Technical Comments about Transmitter Intermodulation, Distortion, and ESSB (or Hi Fi Wide Fi SSB) audio or over equalization by W8JI

The Pickens County Communications Group are volunteers for the Pickens County Emergency Management Agency in Pickens, S.C. and members of R.A.C.E.S.-Radio Amateur Civil Emergency Service, with the South Carolina State Guard. We are not a club. We are a group of amateurs radio enthusiasts with similar interests, dedicated in providing emergency communications for public service, public safety, and commercial communications for local agencies. We also provide Skywarn communications for Pickens County and the National Weather Service in Greer, S.C.

HF propagation to your Linux desktop. CQRLOG uses data from HamQSL website provided by Paul, N0NBH.

DK7IH QRP transceiver for 14 MHz. This small and compact home made transceiver with a max power output of 5W, the VFO module is based on the clock oscillator chip Si5351A by Silicon Labs ATmega168 and OLED 1306

What are the Differences between UV5R and UV82 Series

An online calculator for designing and evaluating capacitors based on the capacitor's area, separation, number, and dielectric constant

Unlike older radios, the 706 uses only one crystal oscillator (called the Master Oscillator). All other frequencies in the radio (L.O., 3-4 I.F. stages, VFO, and CW-offset) are computer-derived from the Master Oscillator. This makes it relatively simple to frequency-align the radio, so that it agrees with the Frequency Display in all modes.

This article is about a homebrew 6 meter lightweight Moxon antenna. Article includes a full part list, instruction to assemble the parts and pictures.

This site is established by a group of ham members who wish to see the interests of amateur radio in Malaysia protected.

Introduction to operating on microwave bands at VKFAQ

927.1250 MHz Santiago Peak, CA USA

Simon Saunders' Blog, from UK

manufacturer of passive electronic components, emerged from Philips Electronics Components, ceramic capacitors, resistors, fuses, varistors

The Advanced ATV Repeater is probably the most versatile ATV repeater controller in The World. It can run entirely under the operating system or all repeater functions can be controlled from any other computer

Coastal Amateur Radio is for hams south of the Fraser. Even if you live north of the Fraser you are welcome to join in. Hams who come together for the love of HF & VHF in the hobby.

Portuguese Amateur Radio Station with personal info and logs.

The Primary N6OCS Repeater is located at 5700 feet on Santiago Peak in the Santa Ana mountains.

The vOICe Learning Edition can be used in combination with a regular oscilloscope, allowing blind users to hear any oscilloscope trace.

Presentation of the QO-100 the first geostationary OSCAR from Qatar by AMSAT-DL

Ultimax antennas manufacturer of amateur radio End-Fed and bazooka antennas made in USA

Global wholesale distributor and manufacturer of communication equipment, including CODAN products

A home made RDF 3 elements Yagi that can be used for fox hunting. The particularity of this antenna is that it can be folded, in order to save space while travelling. In Dutch.

Broadcast listenening radio magazine in spanish

Mini-Operating Guide includes useful hints on Using the HM-133 Microphone, Basic Operation, Operating through a Repeater, Programming a Memory Channel and Assigning a Memory Channel to a Memory Bank

Icom PW-1 1kw Linear Amplifier described by WA0SXV

Stand Alone Software Defined Radio, direct sampling receiver from 30 kHz to 1700.00MHz continuous frequency range, LAN interface for remote access

Master Callsign Database Editor allows to create and modify Super Check Partial database files used by many contesting programs in DTA and SCP formats. The files produced by Master Editor in DTA format can be used with CT, WriteLog, TRlog, SD, and others. The SCP versions of the produced files are for use with Win-Test, N1MM+, and others. Master Editor allows to create a callsign database from a separate log or from a set of logs in the Batch Import mode.

G3KHZ, SM6CVX, G4EDG, DL6KVA + S21ED and S21TV will activate Bhola & St Martins island AS-140 AS-127

Solar and Heliospheric observatory

Product information, resources, enhancements and links of the popular ICOM IC-756PRO III

W1REI / DU1LWQ amateur radio station blog from California

YOTA Youngsters On the Air Facebook public group

A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cable. From the RF point of view, the shield can be modeled as two conductors, the internal shield (the real shield, this is, ground) and the external shield, who is really far to be ground. In this way, your dipole has 3 arms, the two from the dipole and the coaxial cable shield (external face)

Wireless Society of Southern Maine Projects, instructions and photos for many ham radio projects and experiments, including antenna construction and modelling, kit building, station setup, restoration and more

Hytera, a leading designer and manufacturer of professional mobile radio communication equipment, offers complete and customized communication solutions to government, public security, utility, transportation, enterprise & business for higher organizational efficiency.

This free app encode pictures in Slow Scan TV SSTV signals. Support the most popular modes Martin 1, Martin 2, Scottie Modes, Robot and Wraase modes. Image editing is even possible with som text overlaying features

A web site dedicated to HamNet in New Zealand

A review of the Yaesu FT-8900r 29/50/144/430 MHz FM Transceiver, providing 50 Watts of power output on the 29/50/144 MHz Amateur bands, and 35 Watts on the 430 MHz band.

The DIY 137 MHz WX SAT V-dipole antenna project details the construction of a specialized antenna for receiving weather satellite transmissions. It provides specific dimensions for the dipole elements, designed for optimal reception around the 137 MHz band, which is commonly used by NOAA and Meteor weather satellites. The resource outlines the materials required, such as aluminum tubing for elements and PVC for the support structure, along with the necessary coaxial cable and connectors. The article presents a clear, step-by-step assembly process, including how to form the V-shape and connect the feedline. It emphasizes practical considerations for mounting and weatherproofing the antenna for outdoor deployment. The design focuses on simplicity and effectiveness for amateur radio operators interested in satellite imagery. Key aspects include the precise angle of the V-dipole and the lengths of the radiating elements, which are critical for achieving the desired circular polarization response for satellite signals. The resource includes photographic documentation of the construction phases and the final mounted antenna.

Hurricanes Katrina & Rita information from various sources. Compiled by KD5QEL Robin (New Orleans native) near Atlanta, GA. Not for chitchat--only for communications info.

A personal blog about amateur radio activities, including homebrew, bitx, ubitx, mcHF, JT65, FT8 and more digital communications.