pi calculator

Antenna Design Lab by N4UJW Priority listing - Design and build your own Hf thru Vhf antennas.Contains pictures, plans, parts list of very popular ham antennas along with experimental types.

Minooka or Battle Creek special - Description of shortened 160 meter vertical

Homebrew Travel Antenna - This is a low cost homebrew two band travel antenna for 20 and 40 meters. It is based on the B&W Travel Antenna concept with a telescoping whip and a loading coil

FVR Spitfire Array - The Powerpoint presentation below was given by Fred Hopengarten, K1VR, at the 1998 Dayton Hamvention Antenna Forum

Broadband receiving antenna matching - This article addresses the subject of obtaining the best signal transfer from an antenna to the typical 50-ohm receiver input over a wide frequency range, with emphasis on medium-wave (500 – 2000 kHz), encompassing the standard AM broadcast band and the 160-m amateur band.

Ham Radio Deluxe Cluster - Ham Radio Deluxe DX Cluster based on an original idea by the DXSummit cluster runs DXSpider

TT8ZZ Homepage - TT8ZZ Homepage. Logsearch and pics.

University of Hawaii Radio Astronomy - Online receiver streams signals from Jupiter and the sun

SteppIR Antennas - 20 meters through 6 meters, antennas

PicoScope - Pico Technology have developed a wide range of professional PC-based instruments that offer all the functionality of conventional test equipment (DSO - digital storage oscilloscope, spectrum analyzer, meter), and also many features not normally available in this price range. Available functios are Oscilloscope, Spectrum Analyser, XY Scope, Meter and Measurements

Echolinkhams - Users of the new echolink system. Including ham general discussions and topic's.

VE3XAT SSTV Pictures - SSTV pictures

Top 1000 HF Frequencies - Compiled by Larry Van Horn for Police Call

Capitol Hill Monitors - Frequencies, links for scanners, email lists, online audio and more for Maryland, DC, and parts of Delaware and Virginia

Shipping Cases - Wide selection of quality, affordable shipping cases including stock and custom, heavy duty, pelican protector, removable top, wheeled, ATA, and more!

Online Cables.com - easily design your cable, pick connectors and cable, print drawing, get immediate quote and place order, all online.

About Pirate Radios - Information about pirate radios, what they are and why are considered pirates

DX Activities of ONL5183 - Whith more than 20 years of ham practicen SWL Thierry LOMBRY, alias ONL5183, has written several technical pages about ham activities, including propagation, radio perturbations, radioastronomy, DXing, QSLing, ham-spirit, review of material and more. This very interesting website is completed by a large French section devoted to amateur astronomy illustrated with vivid colors pictures.

CQ Log - CQLog is a powerful logging program for Windows. It provides a comprehensive control centre for everyday on-the-air activities, including: full-featured logging of QSOs; statistics for many awards (for LoTW and eQSL capability); support for QRZ, RAC, GOLIST databases. You can save up to 3 pictures for each SSTV-QSO. Two-way data exchange with MixW2, and DigiPan. Integrates with DX Atlas. Real-time upload of QSOs to eQSL.cc. The program also offers a "contest-mode"; supports CAT systems for YAESU, ICOM, KENWOOD, Ten-Tec. Prints QSL cards, and QSL labels, addresses envelopes.

W1SQLPSK - Copies up to 20 PSK qso's at once. Auto detects Call Sign. Lookup Prefix by Joe Faria W1SQL

CallSign Software - Hi-end software for the Ten Tec software radio line inluding Pegasus Jupiter and RX-320

HAMIC - The Ham Intelligent Calculator - HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.

VK5PGT Utilities Page - GkjBios, Tfpcx, tfpcx, Tsthwarc Archive Manager, Flexnet baycom drivers, AGWPE driver, TF2AGW v1.1 dll interface

Rtty interface (FSK/AFSK) with sound cards - "How to remove the so called ""ground loop"" and the reentry in the RTTY broadcast and make radio and PC happily coexist"

CAT Interface for Yaesu - schematic diagram for CAT interface for yaesu HF Transceivers