practical wireless

Dipole for 40 Meters by K4VX - Here’s a very simple and practical way to make a short but efficient 40-meter dipole. The K4VX Linear-Loaded Dipole for 7 MHz

Coiled Choke Balun for HF - A very practical Balun for HF aerial work is the choke type. It reduces RFI to and from the feeder & at next to no cost or loss.

Practical Dipole Antenna - All about dipole antenna construction

Helical Antennas - The Helical antenna description, a simple way of obtaining high-gain and a broad band of frequency characteristics

Yagi antenna construction notes - KA7OEI article on homebrewing Yagi UDA antennas with practical suggestions and designing notes.

J-pole antenna for 915MHz - A 915 MHz four bay j-pole antenna plan

NVIS antenna design - Theory, Modeling, and Practical Applications By W5JCK, presentation in PDF File

900 MHz Quagi antenna - A 10 elements quagi antenna for the 900 MHz band

Homebrew WiFi Antennas - Lincomatic's Homebrew WiFi Antennae, Cantenna, Toothpick Monopole, Patch Antenna, BiQuad, collinear wifi antenna all in one page

How to extend your Wireless Network - How to extend your Wireless Network by building a 2.4 gHz wifi cantenna

Uncle Johns Collection - Antique radios, clocks, cameras. Uncle John collected, repaired, restored, built, old radios, clocks, and cameras.

W1TU Ellsworth Amateur Wireless Association - Ellsworth Amateur Wireless Association, Maine USA

Portland Amateur Wireless Association - Established in 1914 and affiliated with the ARRL since 1930, the Portland Amateur Wireless Association has the distinction of being the oldest Amateur Radio club in Maine

Waterville Area Wireless Association - The Waterville Area Wireless Association was founded in 1957

W1YK - Worcester Polytechnic Institute Wireless Association. - The Worcester Polytechnic Institute Wireless Association

Starman Electric - Starman Electric manufactures DataBridge wireless RF modem modules for easy point-to-point wireless data transmission of analog, digital, and serial RS232 UART signals.

Cross Country Wireless SDR Receiver  ^updated - SDR Receiver a compact high performance HF software defined radio receiver designed to be used in fixed or portable stations. Version 2 of the receiver is now available. It now has an RF pre-amplifier using a power MOSFET and other revisions to improve it's performance both as a stand alone receiver and as an IF panadaptor with HF and VHF transceivers.

Small Antennas for High Frequencies - This is about Small Antenna types and their properties which can help choosing proper antenna for high-frequency wireless communications as: two-way radio, microwave short links, repeaters, radio beacons or wireless telemetry

Fairview Microwave Inc - Supplier of RF, Microwave, & Wireless passive coaxial components, including Coaxial Attenuators, Adapters, Cables, DC Blocks, Terminations, & Connectors

Bonito RadioCom Onlineshop - Whether Hamradio software, Transceiver or Receiver, WiFi sticks as well as practical accessories. Bonito have everything around the topic Hamradio.

Offhsore radio guide - The Offshore radio guide, watery wireless websites, history pictures and sounfiles

Cantenna Calculator  ^updated - A circular waveguide calculator for designing cantennas include source code and windows executable by lincomatic

Receiver Band-Pass Filters - Third-order Cauer filters can boost performance of multi-transmitter, multi-operator contest stations to the next level. The filters are practical and you don’t need expensive test equipment to align them.

40 m Band Direct Conversion Receiver - Practical and usable direct conversion receiver for the 40 m CW band

N2PK Vector Network Analyser Answers - G3SEK answers to some practical questions on builing the N2PK VNA Vector Network Analyser