feed line

Inverted Vee calculator - Online calculator for dipole and inverted vee antennas

Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation

Let's talk transmission lines - Don’t neglect one of the most important parts of your station!

Transmission Lines - About feed lines, parallel lines and coaxial lines, notes on impedance, SWR, Baluns, velocity factor and more by NZART

AA3RL Transmission Line Calculator - Excel spreasheet that calculate virtually every transmission line parameter that one may need. Include Length conversions, Reactance and Length of Stubs

Eliminating TX RF Feedback Problems - Malfunction of transceivers due to stray RF pickup is a common problem, especially when using end-fed antennas, high-impedance feedlines, or a poor ground counterpoise

Speedometers SWR Meters and Smith Charts - Have wondered why a Smith chart has such strange grid lines. Believe it or not, there is a logical progression from Speedometers to Smith charts that will make the Smith grid crystal clear.

G4LIP G8P - Parallel Lines Contest Group - Home page of the parallel lines contest group - g4lip/p

Australian amateur population trends 1998 - 2007 - Over recent years the number of issued amateur licences has been declining, the trend was about 2.8% pa decline over the five years to 2002.

On Line Ham Radio Class - Ham Radio Class On-Line. A complete On-Line Course for the Technician, General or Extra Class amateur radio license.

Houston area firefighters live feed - Houston FD live dispatch audio and discussion group

Southern Maryland Police & Fire - Southern Maryland (somd) police/fire live scanner feed

Eufaula, AL Live police scanner - Live polive scanner feed from Alabama

Grants Pass Police Live Feed - Tune in live to the Grants Pass DPS police radio and Josephine County Sheriff's Office radio feeds.

Las Vegas Live Scanner  ^pop - Las Vegas, Nevada Police and Fire Live Scanner

Minnesota - Willmar Police & Fire-EMS Scanner Feed - WILLMAR MN KANDIYOHI CO. Police fire EMS highway dept.

W9OL Webcams and Weather Station - W9OL has a fine webcam and weather station on line form IL USA.

HA1YA Mechanics & Electronics Inc. - Specializes in manufacture of middle and high power RF decks and high quality linear amplifiers with metall ceramic tubes for HF, 6m, 2m and 70 cm bands. Transverters, power supplies and control units

Discovery Power Amplifiers - The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world’s leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms

Citizen Weather Observer Program - A private-public partnership with three main goals to collect weather data contributed by citizens; to make these data available for weather services and homeland security; and to provide feedback to the data contributors so that they have the tools to check and improve their data quality

DB0ANF APRS Server - Db0anf APRS server for nuernberg / fuerth area, providing online access to the aprs station database

DX-Stations Guide to RTTY Operations - This guideline should help you in preparing your dxpedition and make the most out of RTTY.

Sydney live police scanner - Live online police scanner for Sydney Australia.

Toxic Tops - Online Ham Shack - Stuff - Gifts for the Ham or Amateur Radio enthusiast in your life. Choose from Shirts, Mugs, gifts and more with Ham oriented sayings.

Callsign Lookup - Callsign Lookup is a simple, small Apple Macintosh application that allows the amateur radio operator with a dedicated Internet connection (DSL, cable) to quickly access online callsign databases