live audio 201

Antenna Height Above Average Terrain - Antenna Height Above Average Terrain (HAAT) Calculator

Coaxial Transmitting Chokes - Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC

W4INF Hidden House Loop Antenna - If you live in a restricted subdivision, you need to make the most out of it. This loop antenna is balanced line fed and works 40m-10m, does decent on 80m.

Choosing an Antenna - Choosing the right antenna for you, by Lewis G. McCoy W1ICP

Walkyworld - The World Largest On-Line Walkie Talkie Museum Vintage Walkie Talkies form the 50's 60's 70's 80's and 90's Find The Ones You Had

IV3GKE web cluster and dx-call lookup - Single page live DX spots organized by Band. Includes an exremeley fast call sign lookup.

F8ABX Blog - Le radio-journal : blog

Police Scanner Munster Indiana - Live broadcast from Munster Indiana

Newcastle Scan, Live Scanner - A live stream of radio scanner, You will Emergency Services, Police, Fire, Ambulance, Rescue, Transit officers, plus non ES like transport, media, taxis, couriers, buses, security just about anything. From Newcastle Australia

Chicago Police Scanner live - Police radio scanner live streaming broadcast using ustream.tv

Randolph Live Scanner - Randolph Live Scanner in NC. Listen to Randolph County, NC Fire, EMS, Police, and Rescue LIVE! Devoted to the men and women that protect Randolph County, NC. Asheboro, Randleman, and Ramsuer.

Tuolumne County Incident Feed - Tuolumne County California Incident Feed Live scanner stream for police, fire and emergency

Lincoln Police Radio - Live police radio feed from Lincoln Nebraska

Bay, Saginaw and Tuscola counties live scanner - Live streaming police scanners, streaming Bay, Saginaw and Tuscola counties.

Rock-N-Rescue - Rock-n-rescue the source for safety and rescue equipment focused on delivering the best equipment for climbing, water fire and search rescue

Live VLF Natural Radio - A collection of VLF natural radio live streams. Where possible, streams are synchronised to provide stereo pairs with baselines of up to 4000 miles.

Tower Electronics - PL-259, Motorola & N connectors, Coax Seal, universal adapter kit, TNC, Mini-UHF, SMA, F & BNC connectors, audio connectors,antenna mounts and antennas

Live Shortwave Radio Schedule - Dynamically generated shortwave radio schedule and world map. Updated hourly. Easy to read and use.

HxPI Morse Jabberwocky - A translation of Jabberwocky into Morse Code. The famous nonsense poem Jabberwocky by Lewis Carroll, from Alice Through the Looking Glass, has been translated into many languages. Here it is in Morse Code, as MP3 audio files that can be downloaded. The files are at different speeds (words per minute, wpm) to suit those at different stages of learning morse code.

Test Tone Generator - This Test Tone Generator (TTG) turns your PC into a function generator and enables you to demonstrate, test and tune sound systems, create sound effects and a whole range of other uses to suit your needs. It can also be used for educational purposes.

SigJenny - SigJenny turns your PC into a flexible and powerful audio signal generator for free. It can create multiple waveforms, sweep, fire single or repeating tone bursts. You can save your sound as a wav file, display a frequency response, use SigJenny a bit like an oscilloscope, and do a very good impression of a police car!

Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.

Bluetooth Audio and Amateur Radio - Bluetooth headsets are very common with cell phone users. As such, many amateurs may already own a Bluetooth (BT) headset. So why not use it with amateur radio?

When negative meets positive - Lightning can be a serious hazard depending where you live in the world. Chances are that if you living in an area where lightning strikes are common and you have a communications antenna, it may be attracted to you.

Sound Card Interface by VK6YSF - Presented here is a transceiver to computer sound card interface complete with automated transmit key function. A sound card interface is simply the audio coupling of a computer soundcard and a transceiver to allow various computer applications that send and receive SSTV, RTTY, PSK31 and other similar modes based on soundcard generated signals.