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Pictures and description of a homemade 1.3 GHz and 2.4 GHz RF Signal Source

Experimentig magnetic loop antennas for VHF and HF by M0UKD

City of Milwaukee Fire Department Live Audio Feed

Tri-Cities Frequencies, Live Scanners, CTCSS information and more

Serving the south Kansas city metropolitan area, Grandview, MO

A website dedicated to 70 MHz Band

Yet Another APRS Client, is a free Java application written by Andrew Pavlin, KA2DDO, for monitoring and contributing to the APRS network. YAAC can be used as a stand-alone APRS client, an APRS RF-Internet gateway (I-Gate), or as a AX.25 digipeater.

An homebrew project of a full wave delta loop antenna for the 40 meters band with dimensione, picture and assembling instructions in Indonesian

HIDEXA Dedicated To The Pursuit Of Worldwide DX

Covers experimental work from VLF through laser by K3PGP, one of the EME pioneers.

K8GP web site, home of the Grid Pirates Contest Group.

LX5A pictures results LX9SW

The NB6Zep Antenna, an electrically shortened 80-meter end-fed wire, addresses space constraints for low-band operation by integrating two loading coils into a 37-foot wire. This design, modeled with _EZNEC_, explores configurations like the quarter-wave sloper and inverted-L, with the latter providing a more vertical radiation pattern and practical backyard deployment. The resource details specific coil construction, recommending 21 uH coils made from _BW coil stock #3026_ or similar, and outlines wire segment lengths for optimal tuning. Performance analysis indicates a radiating efficiency of approximately 27% with good ground conductivity, resulting in a signal typically 3-4 dB down compared to a full-size quarter-wave vertical. The antenna exhibits a narrow bandwidth, around 50 kHz, due to its high Q, necessitating a tuner for broader band operation. Feedpoint impedance is low, with ground resistance playing a critical role in achieving a usable SWR. The article emphasizes the importance of an effective ground rod at the feedpoint for proper operation and tuning, suggesting an antenna analyzer for precise adjustments. It confirms the antenna's suitability for DX, citing successful contacts from Oregon to the East Coast and Hawaii on a 160-meter variant, making it a viable option for urban operators seeking low-angle radiation on 80 meters.

Providers of solar panels, photovoltaic systems, Solar Cells and Solar Renewable systems and education for the Do-It-Yourselfer

Schurr Morsetasten, morse code keys and paddles manufacturer in Germany

In this article the author provides some guidelines on how to solve a common problem when stacking different types of yagi antennas on the same mast, limiting the effects on gain and radiation pattern of both antennas

W4TI Rotator Installation

Low Cost frequency counters and DDS VFO's for QRP and Vintage Radio's. LCD Digital Display, Frequency Counter or DDS VFO

Lightning protection for electronic equipment

Homebrew your PC sound card to radio interface with this circuit obtained from the pages of Ernie Mills WM2U.

A wire antenna feeded with an unsymmetrical feed and a 1:4 balun can be tuned from 6 to 80 meters band but can be noisier than a dipole and cause RF in the shack

Cambridge, Ohio

22 Different Wire Antennas for the 160 Meter Band, Random Length Radiator Wire, delta loop, loop antennas, off-centered antennas, sloper, dipoles, Z antenna, Zepp and Clothesline Antennas

AL-811 and AL-811H specifications and information about this 600-800 Watt ham radio ower amplifiers

DXnews links and propagation

Headsets for noisy environments

This mod flattens out the ACC2 audio input low frequency response

Ham Radio Antenna parts and kits manufacturer, based in Germany

Kenwood TS-2000 Remote Mobile Controller RC-2000 Review by M0MCX

Live Police and Fire scanner feeds from Albion PA, Erie County PA USA.

A Batwing Antenna Design Challenge

Federation of Chilean Radio Clubs. Awards and contest of FEDERACHI News about Dx in Chile

The mission of the HDXA is to encourage DX activites in Eastern Nebraska and Western Iowa. The HDXA is a ARRL Affiliated Club with members promoting & sharing DX information and experiences.

An online interactive grid square map made with openstreet map. Just point and click and zoom in to determine an accurate grid square locator till 10 digit resolution

Memphis Police and Shelby County Sheriff dispatch

Newest ARRL westcoast convention. Features fox hunt, banquet, speakers, VE testing, swapmeet, many prizes.

Six elements yagi antenna for 6 meters band. This antenna design is based on the QuickYagi 4 software by WA7RAI, uses a 6.5 m boom, feature 12.0 dBi gain and 35dB front/back

A simple home made desk microphone project that can be fitted into a small plastic project box

Wikipedia page about the Amsat Oscar 51

The HA8TKS VHF DXCluster is an essential online resource for amateur radio operators focusing on VHF and higher frequencies. This platform provides real-time information on DX spots, allowing users to track and engage in two-way radio communications effectively. The integrated map mash-up feature enhances the user experience by visually displaying the locations of DX stations, making it easier for operators to plan their contacts and optimize their antenna setups based on geographical data. In addition to the DXCluster functionality, the site offers various HAM tools, including a QRB calculator, which helps operators determine the distance to DX stations based on Maidenhead grid locators. The platform supports multiple modes of operation, including CW, SSB, RTTY, and digital modes like FT8 and JT65. With a user-friendly interface and comprehensive data, the HA8TKS VHF DXCluster is a valuable asset for both novice and experienced operators looking to enhance their DXing and contesting activities.

CAT decoded Band decoder, remote Antenna switch

Calculate the value of an unknown resistor with this free program for windows

Rtty contesting using writelog for windows. RTTY records and rules, tutorials

Slot cubes are folded skeleton slot antennas with widened, folded dipoles bent into a cube to reduce size. QST Article 12 2019

An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.

A transceiver front-end protector in high signal level environments. An homemade RF limiter to protect your receiver front-end from high radio frequency.

GAL-ANA is an Antenna-Analyzing Tool software, based on NEC2/MININEC3m engines currently available in demo mode for download

Antenna Systems & Solutions, Inc. carries antenna mounts, antenna guyed towers, antenna self-supporting towers, four legged towers, BX towers, poles, tower hardware, and wall mounts.

Windows shareware contest log program for the CQ WW DX contest. The contest log software offers a Network version capable to run over a local area network in order to allow several pc to update a single shared contest log file. Windows XP through Windows 10.