rf hop calculator

40 thru 10 Meter Zepp Antenna  ^pop - A modified 20 meter double zepp wire Operating Bands: 40 thru 10 meters (with tuner), basic construction and performance information.

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

Dipoles - The simple dipole is perhaps the best antenna for consistent performance. Basic page on dipoles by G3PTO

The gain of aerials: the myths explained - In the long history of beam aerials there has persistently existed the claim that certain types of aerials perform better than yagis.

This old dipole - An antenna construction workshop conducted at Marshall N1FN's QTH

ARRL: US Band Plan  ^pop - Includes a downlodable colorfull or b/w US Band Plan in PDF Format

Opequon Radio Society - The Opequon Radio Society is an ARES affiliated club operating in the Eastern Panhandle of West Virginia.

bhi Ltd - Design & manufacture of Noise Eliminating speakers and modules for effective removal of unwanted noise & interference from SSB, HF, VHF, FM & UHF using new DSP technology

Contest Phrases - Several contesting phrases are given in several languages written by Fred Hopengarten, K1VR

Luxorion ON4SKY website - Thierry LOMBRY, ON4SKY has developped a educational website mainly devoted to amateur astronomy but it includes also a large section dealing with amateur radio activities includes several interesting pages about radio astronomy and SETI

F6BLK.net -- Bernie's Website - F6BLK, ham radio operator since 1958, discovered the QRP in 1995. He presents the transceivers he built : the very performant Elecraft K2, and antennas. A part of the site is reserved for Gerard F6EHJ, who presents his creations.

F5NYV web site - My personal web site with a description of rotor sat

Hidden and stealth antennas  ^pop - Antenna Restrictions, Power Restrictions, RFI Problems, or Limited Space keeping you off the air?

CB+ Radio Communication - CB shop in north France

F.lli Merlina Elettronica - Italian amateur radio shop based in Sicily Island

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.

4NEC2 antenna modeler  ^pop - 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Can be interfaced to HFwin32 propagation prediction software.

Satellite tracking with WinRotor - Tracking Interfaces and software for allmost every rotor

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.

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

Eliminate That QRM - reduce or completely eliminate interference from almost any local source whilst leaving the wanted signal relatively unaffected, even though it may be on the same frequency

DL6JAN's CW keyboard - A micro processor interface that converts PC keyboard code into Morse code

Radio receiver dynamic range - The basics of radio receiver dynamic range performance used for specifying the performance of radio receivers used in radio communications systems.

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