phone lines

Grounding is key to good reception  ^pop - Guidelines to groundings.

What tuners do - How atenna tuners works and what are real effects on feed lines and maximun power output by G3TXQ

CBMW - Radio Waves, FCC Rules, channel frequencies, phonetic alphabets, ten codes and more

Mailing list DXFR Priority listing - Mailing list DXFR. Liste DX francophone traitant de la radio et DX 11 mĚtres.

Workman Electronics - Amateur radio accessories, power supplies, tvi filters, speakers, microphones, swr meters, preamplifiers, switches, cable and connectors,

Warren Gregoire & Associates - Boom Microphone Headsets for use on amateur transceivers- assembled and kit form.

AZDEN - Makes a wide range of portable and AC-powered wireless microphones

Dunestar Systems - Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering.

Zetagi  ^pop - Zetagi amplifiers, accessories, power supplies, microphones, SWR and power meters, battery charges

DTMF Kit - DTMF-KIT1 board for Transceiver, board for Telephone-Line and Remote-control without a HAM Transceiver

Pacific Research Solutions - Repeater Controllers, Repeater Tone Panels, Telephone Interface, Remote Monitoring Systems, Process Control and TDS Monitors

Connect System - Controllers and Telephone interconnects.

Heil Sound - Microphones, headsets and accessories

GB Antennas and towers - HF VHF/UHF yagi and quad antennas, towers and headphones manufactured in holland

International Components - International Components Corporation has an extensive range of electronic components consisting of audible signal devices, speakers, microphones, capacitors, electron tubes, connectors, and accessories designed in recognition of the diversity of applications and special characteristics encountered by designers in today's complex world.

Phonetic Alphabets - Phonetic Alphabets historic, English and others, such us NATO phonetic alphabets , - Q, X, Z codes, abbreviations.

Radio Alphabet - Listen to phonetics recommended by the International Telecommunication Union, or ITU.

900MHz telephone frequencies - Frequency table for 900Mhz phones

Morse code & phonetics - Morse conde and internationals phonetic alphabets

Electronic Goldmine - Electronic components dealer, semiconductors, switches, leds, motors, solar energy, ferrites, toroids, capacitors, batteries, jacks and plugs, microphones, meters, power supplies, speakers, transformers, wire and more

Copper Electronics - Primarily CB-oriented, but a source for microphones, scanners and other items for Amateurs.

Writing useful reception reports - Useful guidelines and suggestions on writing reception reports

Voice Shaper - Voice Shaper is a freeware windows speech pre-processor for SSB transceivers. It receives the voice signal from the microphone connected to the soundcard, and sends the processed audio back to the soundcard in real time by Alex Shovkoplyas, VE3NEA

RadioTelephone Tutor - Helps you study for the Ham Radio & FCC GROL exams. Often times, test questions are worded in ways; that fool you. RadioTelephone Tutor drills on missed questions, till you know the answers backwards and forwards. Can take entire question pools in straight, or random order. Creates a practice test; which represents what you would be given in a real exam.

Ham DX Cluster for iPhone - An iPhone and iPod touch DX Cluster client