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An RF Probe project by N5ESE

Experimental Software for the Yaesu VR-120 and Yaesu VR-120D Receivers

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.

One of the oldest emergency traffic handling nets on amateur radio

How to receive automatically NOAA wather satellite images with a Raspberry Pi and a RTL SDR. This project requires a Raspberry Pi 3 Model B a common NooElec SDR Dongle and a QFH Antenna in the attic. Article explains how to setup and configure software but no instructions on antenna.

Ten-Tec Pegasus reviews aka Jupiter

H.A.R.A.O.A

The Texas DX Society is an organization of radio amateurs in Houston, Texas who have a primary interest in DX chasing and contest operating on HF, VHF, and UHF.

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

One of the oldest amateur radio clubs in Canada, the E.K.A.R.C. is a very active community member, participating in a number of events each year.

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

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.

Map of Brazilian prefix call areas

Understanding and using antenna radiation patterns

"The CW Awards are issued by the CWSP ""Grupo de CW de Sao Paulo"" Brasil"

Promote the activities Brazil YL and BRYLA award

Spanish amateur radio forum with classifieds

SJ2W Contest Station, antenna for the 160 meter is a 39m vertical. This 160m antenna consist of 29m of WIBE tower sections with an insulated base and 10m top tube.

SV1DNW personal web site

TBNoticias dx newsletter in spanish

160 to 40 meters inverted L antennas projects

First started in the early 80's by a small group of Hams that resided in Cle Elum, Washington.

Transferring Radio Frequency Energy from Your Transmitter to Your Antenna by Don Keith N4KC

Dedicated to providing superior FM repeater service to Amateurs in the Washington, D.C. Metropolitan area.

Synthetic guy ropes and accessories for antenna support systems

Serving Greater Waterbury

The Giles Amateur Radio Association, Inc., located in Giles County Virginia was founded on May 10th 1992

Summary, tutorial about the basics of what is a waveguide and the basic waveguide theory.

Combined 432 MHz High-Pass - 144 MHz Notch Filter By Bertrand Zauhar, VE2ZAZ

Listen to live radio scanner feed of Dallas Police 1 Central - 2 North East

The Easton Amateur Radio Society's web site Easton, Maryland

Plans for building your own 3-element beam for use on 6m.

EasyEDA - Web-Based EDA, schematic capture, spice circuit simulation and PCB layout Online.

Antenna gain and directivity explained in this article at radio electronics antenna pages

Home page of the Siskiyou County Amateur Radio Association located in northern California; Club Call Sign is K6SIS.

For UK resident amateur radio operators. Sell unwanted Ham gear for free

Dedicated to the fine art of DXing, The DX Notebook offers a comprehensive collection of news and other items of interest to the DX community.

Listen to live police radio scanner from Dallas

Using the raspberry Pi for amateur radio operations with digital mode decoding and log book program

A nice guide to make basic contacts in morse code with a particular reference to SOTA operations by VK3BQ

Antenna design for Horn Antennas

The Delaware Valley Radio Association is a non-profit 501(c)(3) organization devoted to the promotion and preservation of the amateur radio hobby. The club is comprised of amateur radio operators and their families.

A page dedicated to servicing and building a 10 meter band moxon Antenna

A simple dipole for 40m band feeded with 450-Ohm openwire feedline includes MMANA Gal files to download

Details about the upcoming Saskatchewan Hamfest in 2002 on July 5th, 6th and 7th.

Over 100 trained amateur radio operators comprise the New York City Amateur Radio Emergency Communications Service (_NYC-ARECS_), an auxiliary communications service dedicated to providing vital radio links during local, regional, or national civil emergencies. This organization supports governments, civil-preparedness, and relief agencies in situations such as power failures, explosions, fires, floods, earthquakes, or terrorist activities. Their operational readiness is critical for maintaining communications when conventional infrastructure fails, leveraging the resilience and adaptability of amateur radio. NYC-ARECS actively participates in the NYC Office of Emergency Management (_OEM_) Partners in Preparedness program and is a member of DHS FEMA's National Preparedness Coalition, demonstrating its integration into broader emergency response frameworks. The group's activities include regular training, maintaining operational readiness, and deploying communication assets across the five boroughs of New York City. Their efforts ensure robust, independent communication channels are available to support disaster relief and public safety operations.

Article on Phase-cancellation of noise on 2m band

Linked Repeater System in Darby, PA