pi calculator

QFH antenna for weather satellite band - This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable

IK-STIC 2 vertical multiband antenna - The IK-STIC 2 is a vertical, all band, antenna that is over 25 feet tall yet weighs under 5 pounds. Based on a telescopic pipe or a fiberglass fishing pole, using a tuner it can easily cover the amateur radio HF bands from 40 - 10 Meters

Tubes photo gallery - Extensive tubes photogallery by df6na

10 meter beacons - Ten meters propagations beacons compiled by Bill Hays WJ5O

Ham Radio Deluxe DX Spots - Ham Radio Deluxe DX Cluster data is taken from the Amateur Radio DX cluster using DXSpider

Azores Isl DX pedition 2006 - Azores Islands DX´pedition 2006 Atlantic North Amateur Radio Adventure

Ham Radio Deals forums - Trading forum for ham radio equipment and related topics

ScannerBuddy.com  ^pop - Directory of emergency scanners pinpointed by location on a map of the US with direct feeds

Otto engineering - Otto engineering is comprised of two divisions otto controls and otto communications. otto controls designs and manufactures a full line of switches and grips used in heavy equipment, aerospace, marine, medical and other demanding applications. otto communications designs and manufactures audio accessories for two-way radios used in public safety, police, fire, retail, hospitality manufacturing and other markets.

2006 US ARDF Championships - April 8-9, 2006 USA ARDF Championships

The montreal doppler and more projects - PIC microcontroller projects mainly Fox Hunting

Ardf IARU Region II - The IARU Region II ARDF Working Group defines the official rules for ARDF in IARU Region II, organizes the IARU Region II ARDF Championships, and supports the growth of the sport throughout the region.

Piedmont transmitter tracking - T-Hunting club in north carolina

G4ILO Receiving weather satellites - If you are interested in the environment, the weather and other natural phenomena then there is something magical about being able to see pictures of the earth from space just as it is right this minute. One way you can do this is by receiving images from weather satellites.

Icom - IC-706 Picture and data - Large picture and technical specifications by rigpix

ICOM IC-706MKIIG - 706 MKIIG picture and specifications by rigpix db

Rigpix database - Yaesu - VX-150 - Picture and specifications

Yaesu VX 150 pictures - Closer pictures of Yaesu VX-150

Rigpix database - Yaesu - VX-5R - Picture and specification about yaesu VX-5R

Yaesu vx5r specs - Yet another VX-5R technical specification page

Japan premium - The weekly news letter of DX, and is waiting for your contribution

Amplifiers and Vacuum Tubes Tuning Loading and Arcing - Page on amplification topics. From vacuum tubes to various components, discussion on stability and arcin causes.

LCF Calculator - LCF online Calculator, calculate relation between Frequency Capacitance Inductance and Reactance

EDXC plc report - Power Line Communications, a threat for radio listening, Università degli Studi di Pisa

BPL FAQs - Frequently asked questions about broadband over powerline (BPL PLT)