cell phones

KD6WD Moxon Antenna Project - KD6WD introduce moxon rectangles, and in particular explains how he built a moxon antenna for 15 17 and 20 meters band with excellent pictures

T2FD, The Forgotten Antenna - The terminated. tilted, folded dipole T2FD is a little known antenna that performs excellently. Compact in size compared to a half­-wave dipole the T2FD provides signal gain, wide frequency coverage, and exceptionally low noise characteristics.

2 Meter Jpole by KG4WOA - Excellent jpole antenna plan with contruction details and pictures

All Band inverted L antenna - The inverted-L, using parallel feedline and an ATU, is an antenna with excellent potential as an all-band. Antennex article by W4RNL

6 element yagi for 144 mhz - A 6 elements VHF Yagi antenna designed with YAGIMAX 3 and made by SV1XY with excellent results on local and satellites contacts like UO-14 and AO-27

Scott's Crystal Radios and Antique Headphones - Dedicated to Crystal Radio enthusiasts, both users and collectors. Lot of info on antique headphones,crystal radios,earphones,headsets.

Art's Antique Radios - A good reference site for antique radio, bakelite paskon plastinc decription, microphones picture and antique radio gallery

K5ZD contest audio live - During some of the serious contest operations from K5ZD, we will enable live audio streaming direct from the headphones

C6 Bahamas - Sand Dollar Villa is equipped with two antennas and two power supplies, and an extensive tool kit. Has proven to be an excellent spot for people on vacation who also like to engage in casual DX ham radio operation.

K2DBK's Ham Radio Blog - Miscellaneous ham radio stuff from K2DBK

LY Hamfest - Every summer Lithuanian radio amateurs gather together to their traditional HAMFEST somewhere in a beauty spot in Lithuania. It will provide excellent occasion to meet over 300 LY hams in the same place

TowerWorx - Mobile and portable towers for the use in temporary cell phone coverage, military use and mobile communications for surveillance and emergencies

Which bands to use - An excellent introduction to ham radio bands, which bands to use and when.

ITU Zones map - A PDF File of ITU zones made available by Icom America

CQ Zones World Map - A PDF file of CQ Zones made available by Icom America.

K6MDD Mt Diablo D-Star - Mt. Diablo D-Star System is situated on the North peak of Mt. Diablo in California's East Bay 33 miles east of San Fransisco. At 3,600' the K6MDD System has excellent coverage of most of the Bay area !

G7IZU QRSS information - An excellent guide to QRSS mode

DTMF decoder - A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.

iLocator for iPhone - A small application for Apple iPhone that calculate grid locator from gps, wifi or gsm cells by IW2BSQ

AA Battery Solar Charger - This almost trivial circuit may be used to charge a pair of AA or AAA sized rechargeable battery cells from sunlight.

Using Batteries - Batteries in fact and fiction. Batteries, Cells,Chemistry, Math and Radios

Batteries and QRP - Thanks to the popularity of cell phones, laptops and other personal electronic devices, the battery industry has been market-driven to produce higher capacity batteries in lighter weights than previously possible with yesterday's chemistries.As a result, a wide variety of battery types are available to the outdoor QRP operator.

Kenwood TS830S Survival Guide - Excellent collection of TS 830S documents collected from the web and other sources by DL9AI, PDF File

Home Brew a Condenser Microphone - An inexpensive condenser microphone with excellent performance can be easily constructed with easily available parts.

Signal Generation Solution - Build an inexpensive RF signal generator