police live audio feed

The simplest phased array feed system that works - How to calculate "phasing line" lengths that actually work.

The 9:1 balun  ^pop - Antenna special on hard-core-dx.com

Antenna Feed Lines for Portable Use - Why twinlead isn't necessarily a low loss feed line.

Choke balun  ^pop - Essentially, a choke balun is designed to 'divorce' your antenna from the feed line. if your feed line is coaxial cable then you don't want it to be part of your antenna. you want to be able to deliver all your power to the radiator itself, i.e. 'the antenna'. a choke balun does this admirably

EA6VQ - Open wire feeding and baluns - Discussion about open wire feeding and baluns took place in the Moon-Net reflector.

Assembly of the Lightningbolt Quad - One of the best antenna values on the market is the LightningBolt Quad. At about half the cost of a tri-band yagi, you get five band coverage with a single coax feedline and excellent performance from a light, low wind load antenna.

K5OE, 70 cm Quagi Antenna - An AO-10 antenna by K5OE, this design is optimized for 436.8 mHz with a 50 Ohm feed

A Tincan feed for 2.45Ghz  ^updated - Construction details for a simple but effective antenna for 2.45Ghz wireless lan use.

Dish 802.11 Wireless Networking Antenna - This antenna modification is for the IEEE 802.11b networking protocol that operates at 2.4 GHz. It can be scaled easily to the 5 GHz frequency used by IEEE 802.11a by simply scaling the dimensions on the feed can and the excitation antenna to 2.4/5 = 48% of the dimensions shown above.

WK8L's ATV Page - Includes links and documentation on wifi antennas, 2.4 GHz Coffee Can Feed Antennas

Tucson-area police radio scanner - Launch the StarNet radio scanner to listen to Tucson-area police, fire and other agencies radio transmissions.

Boston Fire Department Live  ^pop - Listen to Boston Fire Department live scanner feed

New York Long Island Scanner Pages  ^pop - 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

Maha / Powerex - Portable electronics, amateur radio, pro audio and digital cameras batteries, chargers and conditioners.

Shure Incorporated - Microphones and Audio Electronics - Shure incorporated, microphones and audio electronics

National RF, Inc. - National rf provides consulting engineer services, and manufactures direction finding antennas, test equipment, communications receiving equipment and adjuncts, satellite antennas, voice amplification and audio equipment.

Sherwood Engineering Inc. - Cooling kits, drake filters, speach processors, audio switch boxes, synchronous AM detectors,

FT817 DSP noise reduction noise - Add-on audio DSP unit from BHI

Electronics USA - Manufacturer of led digital clocks, digital timers, countdown clocks, electronic kits, audio switches, binary clock, telegraph keys, and cool gadgets.

Radio Tubes, NOS Vacuum Tubes on sale - Old Radio, Ham Radio, NOS Audio, Antique TV Tubes on sale

PoliceScannerWeb - Dealer for Uniden Radio police scanners, including the Uniden base, handheld, and NASCAR racing scanners for public fire, police and rescue information and weather alerts.

IP-Sound  ^pop - IP-Sound is a Free application for audio exchange client to client over a TCP/IPv4 network (Lan/Internet). The main purpose for the existence of IP-Sound is to provide low quality audio 8-16kHz, with low latency for use together with remote control software for "ham" radio amateur equipment. IP-Sound is developed by SM5VXC.

FreqTweak - FreqTweak is a tool for FFT-based realtime audio spectral manipulation and display for Linux. It provides several algorithms for processing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra.

10 W Linear Amplifier - This article describes a 10 watt linear amplifier that is capable of delivering over 15 watts into 50 ohms and uses cheap plastic transistors that are used in CB equipment. by Harry Lythall - SM0VPO

Hombrewing an HF Transceiver - This page will describe the construction of a multi band SSB transceiver with all its components Band Pass Filter, Oscillator/Modulator unit, RX/TX Mixer TX Amp I.F. Amplifier AGC VFO Driver amplifier Receive audio amplifier Final amplifier Low pass filter Digital display and VFO stabiliser