trap loss

Coaxial-Cable Trap Dipole  ^pop - An Attic Coaxial-Cable trap dipole for 10, 15, 20, 30, 40, and 80 meters

How antenna traps work - An interesting article about homebrewing antenna traps for multiband antennas by VE3GK

Petlowany Three-Band Burner Antenna - a simple, low-cost, trapless short vertical antenna which amazingly works on three HF bands (20, 15 and 10 meters)

Semi-vertical trap antenna  ^pop - The G3NGD Semi-vertical Trap Antenna for 1,8 3,5 and 7MHz

Build A Tin Can WiFi Antenna - Build a tin can waveguide WiFi antenna in one hour. Then put it on a 18" inch direct tv dish. No coax signal loss. Use a USB device on antenna. Complete instructions to build this powerful wlan antenna

Rotary trapped-dipole for HF - How to build a trapped rotary dipole with many photos ecc.

Projects and Info Center - Antenna projects and info center by KP4AO, including The Optimized Wideband Antenna (OWA) Yagi and Skyhawk, a state-of-the-art trapless tribander

Lino Esposito Collins Collector - Collins receivers years 1950's-1980's. Genova-Radio/Icb:20 years of work with Collins receivers. Trapani-Radio:Collins rx 651s-1. Collins Advertising 1950's-1960's.

NASA Online VLF Receiver  ^pop - Hear VLF audio from NASA online VLF radio receiver in Huntsville, Alabama.

Radio Meteors-NASA Alabama - Icom PCR 1000 at NASA Marshall Space Flight Center monitoring meteor signals on 67.3 mhz.live.

Barker & Williamson - Dipole antennas, unique broadband antennas, trap dipole antennas, coils, accessories for HF radio

Unadilla Antennas - The Big Signal, W2AU, W2DU, W2VS, traps InLine, Intenna, An-sulator, End-sulator, Old Reliable by Unadilla Antenna Manufacturing Co.

Times Microwave Systems - Manufacture LMR Flexible low loss coax cable, connectors, and cable assemblies for Wireless Communications applications.

Ham dictionary of terms - IK0WRB glossary of ham radio terms, available also in italian

Solar Glossary - Glossary of solar and terrestrial terms, by the Space Environment Center

Basics of Radio Wave Propagation - Exaustive introduction to radio wave propagation, includes a very detailed glossary on common propagation terms, composed by AE4TM.

Sunspots explained - History, activity, glossary and modern reseach about suspots

LZ5DB QSL print service - Full color glossy QSL cards, printed in Bulgaria

Broadcast schedules - Current broadcasting schedule by languages

Antenna Maker  ^{updated  pop} - Antenna design program for Quads, Yagis, Inverted Vees, J-poles, Trap Dipoles and more.

YPlog - YPLOG logging software for Windows support Icom and Kenwood Radios, map programs and a program for coaxial trap design.

Pathloss Calculation and EME - Java free space pathloss calculation and EME

Coax and Feed line Information - Coax & Feed Line Basics and coax loss information

Coaxial cables attenuation charts - Coaxial cables attenuation chart

HA8ET Technical & Homebrew pages  ^pop Priority listing - Technical Articles, Homebrew,Test & Measurements, (Returnloss Bridge 1,8 MHz...1300 MHz, 2m/70cm DIPLEXER...) Vacum Tube Databases, VHF-UHF-SHF Power amplifiers,HAM links, electronics links