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A really simple project to make a power meter measuring RF output powers from a few mW up to half a watt. A DIY amateur radio project for QRP enthusiasts

A stepper switch controller made with arduino by N3OX

Manufacturer of professional antenna and filter systems for communications and broadcasting, serving commercial and governmental markets worldwide.

North Texas QRP Club

TenTec 1300-Series QRP CW Transceiver Kits

radio groups and packet radio

Windows PC control program for the Icom IC-7300 transceiver. Power-on and Power-off by software BktNetInterface for JTDX and WSJT-X, audio recording, memory management, cw keyer management, Interface for other software

An article comparing the Icom 7610 transceiver over The FlexRadio Flex 6400M

Whats new on ham radio with digital modes? DRMDV

Serving The Interests Of Amateur Radio For Over 70 Years

Amateur projects to investigate radiowave propagation - G3PLX's chirp project, ionosonde database, and more

The problem originates by improper TXOUT-to-RF timing (RF transmission exists still after a TX-EN prohibition), combined by too long decay of their CW pulses.

Kenwood Portable SSTV device

This Frequency Counter Development Kit is fully functional with the included pre-programmed microprocessor

Yaesu VX-8DR/DE received APRS beacons map based on Google Maps. The application parses Chirp's .img files and shows the QTH of the incoming APRS messages.

Manufacture remote control interfaces to manage several kind of ham radio transceivers, Antenna rotators and antenna switches. Control can be done using smartphone Apps or from Computers.

An article about the Rybakov 806 Vertical antenna. The classic Rybakov configuration is a 7.6m or 8m ( aprox 25 or 26 feet) wire fed through a 4:1 UNUN

Nuand id the maker of bladeRF - the USB 3.0 Superspeed Software Defined Radio, 300MHz - 3.8GHz RF frequency range Independent RX/TX 12-bit 40MSPS quadrature sampling

Describes Atlantic Tower Services (ATS), a company specializing in antenna tower erection and maintenance, operating from Orlando, Florida. ATS offers a range of services including site maintenance, structural repairs, system modifications, and complete tower installations for various communication needs. The company emphasizes its capability to handle diverse tower projects, from routine inspections to complex upgrades, ensuring structural integrity and optimal performance for amateur radio and commercial installations. ATS focuses on delivering reliable infrastructure solutions, supporting the backbone of communication systems. Their service portfolio covers critical aspects of tower ownership, addressing both preventative care and reactive solutions for existing structures. They are equipped to manage projects involving different tower types and heights, adhering to safety standards and operational best practices. Services include **site maintenance** and _structural modifications_.

A comprehensive and up to date log by F5GIT dedicated to the Ham radio hobby

A Picaxe Morse Code keyer project with source code and links to useful resources by K6ACJ

A very informative review of the Icom IC-7300 direct RF sampling transceiver, including audio samples, recordings and a comparison vs the Elecraft KX3

Used electronic test and measurement equipment

A blogspot blog about Software Defined Radio

A resource serving the needs of US county hunting around the world by K3IMC

Replacing filters on ICOM IC 775

H.A.R.A.O.A

Demonstrates the complete design and development process for a **Low Noise Microwave Amplifier** (LNA), beginning with conceptual design and progressing through prototyping. The tutorial series covers the initial stages of a single-ended first gain stage, focusing on critical parameters such as noise figure, gain, and stability. It systematically details the theoretical underpinnings and practical considerations for achieving optimal performance in microwave frequency applications. This resource provides a structured approach to LNA construction, enabling radio amateurs and RF engineers to understand the iterative steps involved in realizing high-performance receive-side amplification. It offers insights into component selection, impedance matching networks, and the measurement techniques required to validate design specifications, particularly for **microwave** band operation where noise performance is paramount.

An overview of the basics of the horn antenna used in RF microwave applications.

The RYMSA Corporation designs, manufactures and distributes a wide range of sophisticated antennas and components for the telecommunications industry supplying technical solutions tailored to the needs of its clients around the world.

Understanding and using antenna radiation patterns

A page describing all element of a weather statio for NOAA weather satellite image reception

WD0M installation of the Hex Beam by SP7IDX

New unused surplus and used electronic test and laboratory equipment including spectrum analyzers, signal generators and oscilloscope

By Floyd Sense K8AC

Trophy program have 15 plaquiettes of expensive wood.

Promote the activities Brazil YL and BRYLA award

Yaesu FT-100D Active Interface for the Codan 9350 and Comet SB-15 Antennas

Dedicated to CB radio promotion in Portugal.

The Radio Operators Association of Dallas (ROADS) Club exist to promote interest in amateur radio communication and experimentation, fostering of education in electronic communications as it applies to amateur radio, development of individual efficiency, cooperation among members. and furtherance of the public welfare.

This processor controlled autoranging sniffer has become popular for vehicle based foxhunting in Australia

Solar Powered Station

G0HWC details and HTML files with images to build yourself a Ham Radio website. Get your Ham Web Site on the internet for free

Baycom modem, The famous "PMP" (Poor man packet!)

Homebrew Tube Projects, Vacuum Tube Data, Articles From Old Handbooks

W1AEX Audio settings and general observations

Interesting PDF Document on Lightning and Surge Protection

Designer and supplier of tower reinforcement systems to the wireless industry.

A dipole can be broadbanded by a number of techniques including by matching with resonant sections of transmission feed lines.