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A simple homebrew outdoor antenna to 2.4 GHz band.

The web page provides detailed information on a portable 10/20/40 meter vertical antenna designed for mobile operations, including modifications for 20 and 40 meters. It includes images and descriptions of the antenna setup in a car. The content is useful for amateur radio operators looking to enhance their mobile communication capabilities.

Free downloadable band plans layouts ready to print in pdf format by C.Gustave Sandberg W1CGS, band plans are updated to 2007.

Building this antenna is very easy and inexpensive, 6 Foot EH Antenna

70cm, Collinear Antenna From Coax

A rugged motorized satellite antenna tracking system for construction by the home handyman

Plan of a helix antenna for 2 meter satellite use by VK5ZAI

The web player offers live radio scanning of public safety frequencies in Orlando, Florida, including Orange County Fire Rescue, Orlando Fire Dept, Winter Park Fire Dept, and Orange County MedCom, PSAP. Users can listen to real-time emergency radio communications.

Canada's premier amateur radio, shortwave radio, scanner, CB, marine and aircraft radio store. A complete line of acessories is also available along with full service and repair facilities.

This article describes how an effective ground system can be produced for a short vertical antenna.

The ARRL website provides a graphical representation of US frequency allocations for amateur radio operators. Users can download a PDF document containing the band plan and access additional information on frequency bands and regulatory aspects.

Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. Author use 1/2 inch copper pipe, and the associated fittings necessary. The dimensions aren't typical however, this is what it took to get its SWR low.

Shows QSO and SWL in real time, taking data from many different sources (DX-Cluster, WSPR, Reverse Beacon). It also allows to send DX-Spots and more features.

Homebrew a 5/8 wave ground plane antenna for 10 meter band. Interesting article with lots of pictures and homebrew details.

Pictures, drawings and notes about IK4DCS home made tower in italian

New York / Long Island Scanner forums, chat, and live scanner feeds of Nassau County Fire Departments. Site registration is needed to listen to the live feeds

It is very simple to build and you can tune it in your shack room

Complete plans and drawings to build a small 3 elements Yagi antenna for six meter band by Ken Willis

WiNRADiO Communications, a division of Radixon Group, was established in 1996 to commercialize extensive research in radio communications. The company specializes in integrating radio and computing technologies, offering a diverse product range for government, military, security, and amateur radio enthusiasts. Their product line includes the WR-G65DDCe 'EXCALIBUR Sigma' HF/VHF SDR receiver, noted for its capabilities, and the G31DDC EXCALIBUR, recognized for its price/performance ratio in shortwave listening with improved AMS and Noise Blanker features. The company also produces the G39DDC series EXCELSIOR for serious monitoring, WR-G526e/G527e/G528e modular SDR solutions for high-performance applications like phase-coherent direction finding, and the low-cost WR-G305e/G305i VHF/UHF receivers. Professional counterparts, the WR-G315e/G315i, support APCO P25 decoders and trunking options. WiNRADiO's offerings extend to the PFSL-G3 field strength logging system for mobile signal coverage, advanced multichannel telemetry systems like the MS-8323, and specialized antennas such as the AX-31C Log-Periodic and AX-81S active HF antenna. DRM decoder software is available for G3 Series receivers, enabling clear reception of DRM broadcasts. The WSS-420 Weather Satellite Receiving System and various antenna rotators are also part of their product ecosystem. WiNRADiO supports multiple operating systems, with MacRadio for Apple Macintosh users and LiNRADiO for Linux developers, providing drivers and network receiver solutions like the RLX-810.

CHIRP is a free, open-source, cross-platform radio programming tool that supports a large number of transceivers from manufacturers such as Icom, Kenwood, Yaesu, Alinco, Wouxun, Puxing, and Baofeng. Chirp radio software run on Windows, Linux, and macOS, enabling users to exchange data between different radio models and interface with multiple data sources and formats. The program streamlines the configuration of memory channels, frequencies, and various settings for amateur radio handhelds. Specific models supported include the _Icom IC-7300_, _Kenwood TH-D74_, and _Yaesu FT-818_, among many others. CHIRP provides compatibility with various file formats, including Generic CSV, RT Systems CSV, ARRL Travel Plus (.tpe), and manufacturer-specific formats like Kenwood KPG-44D (.dat) and Icom Data Files (.icf). Additionally, it integrates with the DMR-MARC Database for enhanced programming capabilities. Users can download CHIRP for their platform and access extensive documentation, including a FAQ and a mailing list for support. The project encourages users to consult existing documentation and open/closed tickets before submitting new bug reports or feature requests.

PlanePlotter is a windows decoder of live digital position reports from aircraft and plots them on a chart. Using PlanePlotter, you can see a radar-like display of all those aircraft around you that are transmitting the appropriate digital messages including ACARS, ADS-B and HFDL. Full Trial available for 21 days.

My Sloopers antennas for 80 and 160 meters

Long range Wi-Fi antennas you can build. Helicals, parabolics, and biquads discussed. How to add external antennas to WUSB54GC and F5D7050 usb wireless adapters for long range connections.

A QRP antenna tuner for 20 meters band

IARU band plan comparagraph

Midland Consumer Radio, Inc. is one of the most experienced and respected names in radio equipment. Midland offers the broadest line of CB transceivers in the industry, Amateur radio transceivers, VHF marine transceivers, VHF power amplifiers, and RF equipment for the broadcast industry.

Drawings pictures and notes on a rotary dipole antenna for 30 and 40 meters band

Listen to the Montgomery County Police Live Scanner Radio Feed.

Coaxial Cable Dipole for 30 meters band by I2NDT with detailed pictures of his dipole antenna setup.

5 Elem. yagi for 10 meters, 9 element yagi beam antenna for six meters band by ON4ANT

A home brewed rotary dipole antenna for 12 and 17 meters band with pictures and construction details

A mobile setup using a dipole antenna for 10 to 80 meters band in italian

Bandplans for region 1 in pdf format by DARC

The 30/40 meter **vertical antenna** project by IK4DCS details the construction of a shortened, self-supporting design, reaching a total length of 5 meters. The antenna incorporates a linear loading section and a coaxial cable trap for 30 meters, based on the "Antenne Volume 2°" text by Nerio Neri (page 223). The design uses six radials, three for each band, positioned at approximately 90° inclination and at least one meter above the roof or ground, connected via a 1:1 balun at the feed point. Mechanical construction utilizes aluminum tubing, with a 2.30-meter primary radiator section (30 mm diameter) joined to a second part using a Teflon insert and a PVC sleeve for rigidity. The linear load, approximately 3.70 meters long, accounts for a 30% physical shortening of the quarter-wave element. A capacitive load, made from three 50 cm radials, is integrated into the 40-meter top section for fine-tuning. Final adjustments involved radial inclination for 40 meters, as initial testing showed increased SWR and interference on 30 meters due to nearby resonant structures. The author emphasizes the importance of clear space for optimal performance and provides drawings and photos to clarify the build process.

This small window application will calculate Coax Cable loss from SWR and SWR from Cable Loss

Web receiver of hb9afz-using icom pcr 1000 on weekends 0800-2000 utc.

This document by W4HM explains the construction and usage of a 160 meter balanced coaxial receiving loop antenna, which can be easily adapted for the 40 and 80 meters bands. The content provides detailed instructions on building the antenna, its advantages, and how to optimize its performance for amateur radio operations. It is a valuable resource for radio amateurs looking to improve their receiving capabilities and enhance their overall radio communication experience.

Cat interface for Kenwood transceivers, tested with TS-850 and kenwood TS-50 but should work with all Kenwood rtx

802.11b WLAN Waveguide Antennas Unidirectional & Omnidirectional. High gain, Simple construction by Trevor Marshall

Multimode suite, feature logging, Internet interface to CXCluster, Smart multi-mode controller software, contest, APRS, and PSK31 via Sound card. Free and Commercial version available.

A moxon antenna for 28 MHz

PA3ANG online receiver Ten-Tec RX320 from holland

Download the PDF with USA Amateur radio HF band plan and common country prefixes updated in 2008 by Icom

Sharing beverage antennas with this switch boxes is possible. This article describes a 6-position remote antenna switch for Beverage antennas on 3 bands (160m, 80m, 40m). It allows selecting one of 6 antennas for each band without affecting other receivers. The system uses a control box with a rotary switch and a separate splitting box with bandpass filters for each band.

Short guide to build your own groundplane antenna, includes radial measurements fro warc bands

Build parabolic WLAN antenna adapted from a small satellite dish. It provides high gain and long range connections.

Tarheel Antennas presents its product line of motorized **screwdriver antennas** and stainless steel mounting solutions, engineered for both amateur radio operators and commercial users. The resource details the manufacturing process, emphasizing in-house CNC machining and the use of quality materials for durability and performance. It highlights the company's commitment to U.S.-based manufacturing, with products built in St. Joseph, MO, since 2008. The site provides essential contact information for sales and technical support, including email addresses and phone numbers. It also includes a mailing address for physical correspondence. While noting a temporary absence from the Dayton Hamvention in 2024, the company expresses intent to return in 2026, indicating engagement with the amateur radio community.

ALAN Germany web site

Professional antennas in MF, VHF, UHF and SHF frequency range for military applications, civil-professional market, mobile communications, radioamateurs and antennas for special applications - EMC, radiomonitoring, etc.

Antennas that use a combination of vertical and horizontal polarisation.