feed line calculation

Beverage Antenna Construction - Types of beverage wires, choose best supports and insulators, multiple antennas at one feedpoint, all well documented with photos and exaustive explanation.

Online helix antenna calculator - PHP Helical antenna calculator, need SVG viewer

K7TJO copper pipe hentenna - Hentenna calculations and resources. Copper tubing / pipe with javascript calculator. Rectangular loop with matching section.

Cheap antenna to make from 160m - 6m  ^pop - The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD

Do You Need an Antenna Tuner  ^pop - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format

YI9PSE On-line Log - YI9PSE online log - IRAQ 2010 DXpedition web site

Tucson AZ Radio scanner  ^pop - Tucson, AZ police and fire scanner from StarNet, the online service of the Arizona Daily Star. Flash required to listen.

Cleveland.com: Police Scanner  ^pop - Live feed from Cleveland, Ohio

Gold Line - Manufacturer of professional audio test and analysis equipment and of cb, marine and amateur radio accessory equipment.

Eventide Inc. - extensive line of digital voice logging recorders, instant recall recorders, and accessories for use by communications and broadcast professionals

Digital Radio Box - DiRaBox Digital Radio Box PC-controlled Shortwave Receiver for Software Defined Radio. The shortwave spectrum offers worldwide reception possibilities like broadcast and amateur radio.

Tokyo HY-Power  ^pop - RF Aplifiers and accessories. Solid State RF Linear Amplifier Engineering and Antenna Tuners

Ham Radio Audio and Resources - EchoLink and IRLP Internet Radio Linking Project Node's, Hurricane Watch Audio Feed's and Info, Live Scanner/Other Feed's from the USA, Local Ham Frequencies, Online Receiver's, Shoutcast Live Audio Feed's from the USA, Southern California Frequencies and more

Eufaula police scanner - Live Streaming Scanner Feed for Eufaula, Alabama's Police & Fire Depts. and the Barbour Co. Sheriff Dept.

Batteries and gadgets - Your source for weather radios, communication headsets, 14 channel radios, M&M groovy radios, smithsonian crystal radio and weather station kits, line restrictors, antennas,ham radio accessories, and battery products.

Hamradioindia Shopping - on-line shopping of rf components, ICOM replacement boards, marine modules, kits and more

TestParts Sales Company - TestParts.com carries RF Microwave WiFi Coaxial Attenuators Coax Adapters Dummy Loads Waveguide Oscilloscope Probe Leads DMM Manuals RF Switch Relay SurplusSales Bristol Spline Pocket Toner Tubes Digicon Heliax RF Parts Oldaker Test Leads Silver PL-259s

Deutsche Welle - Germany's International Broadcasting Station with links to numerous pages in multiple languages containing program schedules, and live audio feeds.

Radio Australia ABC - Online in RealAudio and Windows Media formats, with multiple language shortwave schedules, and instructions for receiving Australian satellite radio and TV (AusTV).

Voice of Tibet - Voice of the Voiceless - Radio VOT daily broadcasts a 30 minute news service in Tibetan and a 15 minute news service in Mandarin Chinese.

Oromia Online - RSQBO - News and general information about Oromia and the Oromo people Ethiopia

Total Recorder - Captures any audio from the Internet, records audio from CD, microphone, line-in, converts any sound formats to WAVE and MP3. Total Recorder records streaming audio, Mic input, Line-in input as well as CDs and DVDs, allows users to schedule any number of future recordings

Dimension 4 - Freeware software that synchronize your PC's clock. Dimension 4 monitor your Internet connection and automatically adjust your PC's clock when you're online at an interval you specify.

Electronics and Radio Today - Electronics and Radio Today for electronics and radio information, projects parctical information and introductory articles. Especially useful for those taking GCSE Electronics in the UK and around the world.

Rig to Soundcard Interface by M0UKD - Practival project that contains two isolation transformers, one for AF from the tranciever to the line in on a soundcard, and one from the audio out of the soundcard back to the mic / data input of the radio. Both of which are variable inside the interface via two preset resistors.