practical wireless

Sleeve Baluns - Sleeve baluns are normally used at VHF and higher. As a general rule, they are not practical at HF. The balun can be inverted and used as a skirt to form part of the antenna element

SWR, Impedance and Line Loss - This article deals with the practical aspects of SWR, line loss and input impedance.

Coiled Coax Choke Balun - A very practical Balun for aerial work is the choke type

A Practical, 5-Band Homebrew Wire Beam - The Upside-Down Umbrella Antenna by Don Keith N4KC

Cookie Cantenna Wi-Fi - Make a cheap, portable, high performance (15-18 db) directional antenna out of commonly available parts that can be purchased in most grocery and hardware stores.

GX4MWS: The Macclesfield Wireless Society - The official website of the macclesfield

Wireless Society of Southern Maine - The Wireless Society of Southern Maine is a ham radio club serving the Portland, Westbrook, Gorham, and Scarborough, areas in Southern Maine.

QCWA - Quarter Century Wireless Association (QCWA) Founded 1947

WX5RC Rogers County Wireless Association - Claremore, OK

FM DX Antenna Company - FM antennas for reception and transmitting on the FM broadcast band, Weather Band antennas, Wireless microphone antennas, and products to improve reception for the FM antenna, weather band radio antenna, and wireless microphone antenna.

STAR-H Corporation - STAR-H Corporation specializes in extremely wideband dipoles and compact low-profile antenna systems for military, emergency management, commercial operations and consumer wireless applications.

Cross Country Wireless - UK manufacturer of ham radio accessories, including TNX, SDR receivers, RF Diplexers Triplexers, bandpass filters, iambic memory keyers.

Introduction to Digital Modes - Wireless Society of Southern Maine, Digital Modes Page, introduction to amateur radio digital modes, including FLDIGI, PSK31, RTTY, high speed CW, Slow Scan Television, HF Weather Fax, WeFAX, MFSK16, OLIVIA, G-TOR, AMTOR, MT63, Digital SSTV, Frequency Key Shifting, and more

HSMM-MESH - A high speed, self discovering, self configuring, fault tolerant, wireless computer network that can run for days from a fully charged car battery with focus on emergency communications

WS1SM CW Page - Wireless Society of Southern Maine CW Page, information on the topic of wireless telegraphy, cw operating, morse code history, telegraph keys, key collecting, code proficiency, learning the morse code, and cw-related links

ARC electronics - Communications solutions for Business, Utility and Industrial applications including data phones wireless RF

APRS Messenger program - APRS over digimodes including PSK, QPSK and GMSK with digipeating and two way HF internet gateway to the APRS-IS

70cm Amplifier - A practical 70cm solid-state amplifier design capable of 500w

The Official Class E Transmitter Web Site - The goal of this site is to present a working, practical tutorial on class E transmitters

RF Safety Compliance Calculator - This program is intended for far-field calculations, Calculate Estimated Power Density based on several factors.

RF Probe project - A simple RF probe diagram

WiFi Router for amateur use - Modifying consumer off the shelf wireless LAN devices for specialized amateur use