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Homepage for SND Tube Sales

"Home page of Slovenian Amateur Radio Club ""Slovenija"" - S51SLO"

Chicago's oldest and best amateur radio club

MyAntennas.com offers standard and custom made multiband antennas, Baluns, Common Mode chokes and accessories. All products are designed and made by Danny Horvat, E73M an antenna design engineer formerly employed by Cushcraft Corporation.

Noise Meter software for the noise meter tool by G8KBB that measure noise using a PC sound card and calculate noise figures by means of a calibrated noise source.

Radio Amateur organisation of Flanders in Belgium.

The InterCity Amateur Radio Club welcomes you to Mansfield, Ohio.

Tips and tricks in RTTY Contesting by VA7ST

Garland Amateur Radio Club (GARC) K5QHD Garland, Texas

The largest domestic manufacturer ofair-dielectric variable capacitors located in edgerton, ohio.

The following are the opinions expressed by various amateurs.

An excel spreadsheet that in a really simple way checks how much to trim your antenna elements. Download the xls file and watch the presentation video include in this page

WA0SXV article on the ICOM IC 756PRO based on his own experience

A view on TS570 sensitivity, a plot from 1.8 MHz to 60 MHz

UnidenCommander, Uniden Commander provides full control over your Uniden Bearcat scanner from your PC and even adds functionality which is not normally available on your Uniden Bearcat scanner.

Online websdr receiver based in Rome Italy provides a nice user web interface and receiver most of the amateur radio HF bands

Anoka County Radio Club and Emergency Services

AM DXing taken to the extreme. Reports and station logs from DXpeditions to Arctic Northern Finland. Also articles, QSL news, links, audio and video on AM DXing. Published by Finnish DXer Mika Mikelainen.

About basics of the horn antenna used for many rf microwave antenna applications.

First pictures and links for the Kenwood TS-990S HF and 50 Mhz transceiver releases in May 2012

Pacific Division of the American Radio Relay League

KD8KSB realization of the CJU satellite antenna that allow similar performance to the arrow antennas.

tk7 is open source software designed for the ICOM IC-Q7 walkie-talkie. Though tk7 is intended chiefly for Linux, MacOS X, and BSD users, it will work on Microsoft Windows too.

The direct conversion receiver described consists of only a bandpass filter, mixer IC, VFO and audio filter. With only 22 parts, this simple circuit should take a few hours at the weekend to construct.

The configuration of this antenna is a triangle with apex in the top of a very tall tree. The antenna is fed at a bottom corner using 450 ohm ladder line.

Log Search for 9M0L Log online

Interface APRS to a weather station

A Few facts concerning GMT, UT, and the RGO

Layman level explanations of "seemingly" mysterious LF MF and HF propagation occurrences.

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

Manually programming D-Star handheld transceivers like the _Icom ID-51A_ and _ID-31A_ can be a straightforward process, enabling operators to configure repeaters, simplex frequencies, and D-Star specific settings without relying on computer software. This method is particularly useful for field operations or when quick adjustments are needed, allowing hams to set up callsign routing, DR mode, and reflector links directly from the radio's interface. Understanding the menu structure and key sequences is crucial for efficient on-the-fly programming. Operators often find manual programming invaluable for activating new D-Star repeaters encountered during travel or for participating in local nets where specific G2 or G3 gateway configurations are required. While software like _CS-51_ offers convenience for bulk programming, the ability to manually input frequencies and D-Star parameters ensures operational flexibility. This approach also helps hams troubleshoot connectivity issues by verifying individual settings directly on the transceiver, ensuring proper D-Star registration and gateway access.

11 Years of monthly propagation reports from February 1988 to January 1999 by AD5Q

Steel City Amateur Radio Club Pittsburgh

VK9MT Online Log Search - Mellish Reef 2014

On this page are designs for Dual Band 2M / 70cm antennas. All antennas are 50 ohm designed driver. These Yagis have a unique element called a Open Sleeve. 4 Element 5 element and 9 element Dual Band - 2M / 70cm antenna projects

ECARA is a non-profit organization dedicated to the public service and promotion of amateur radio, and is affilated with the American Radio Relay League.

Mark Connelly, WA1ION article on Medium Frequency Amplifier Circuits in PDF format, include some RF amplifier schematics

Amateur radio, one of the older clubs of``the UK. Meets on friday nights. links to ATV.

Valcom Guelph specializes in the design and manufacturing of a full range of MF Beacon 100 KHz - 600 KHz, AM Broadcasting 540 - 1700 KHz, HF 1.8 - 30 MHz, VHF 30 - 300 MHz and UHF 300 - 1,200 MHz and SHF up to 6 GHz antennas based in Canada

Homebrewing dummy load by M0XPD

The advantage of 5/8 wave antenna is that it has the lowest angle of radiation and has about 1dB more gain when compared to 1/4 and 1/2 verticals. So the 5/8 should be the favourite choice for DX.

Local Amateur Radio Club for the City of Mount Vernon, Knox County and surrounding areas.

A no ground antenna solution for backpackers, balconies or plastic car bodies, like RV or other portables uses where is difficult to find a good counterpoise by PD7MAA

WR1B review of the Kenwood TS-570D on QST Jan 1997

A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.

A little information about my equipment, qsl cards etc.

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.

German antenna manufacturer, produces VHF and UHF antennas for amateur radio use

Used in the Kenwood TM-241, TM-741 2m module by W3KKC