he G3TPW Cobwebb antenna covers five bands, 14 – 28 mhz, including the WARC bands. It is made by SRW Commuications Ltd (Steve Webb), Astrid House, Swinton, Malton, N. Yorkshire YO17 0SY (tel: 01653 697513). It is strongly made using fibre glass rods and comes pretuned, but is easily adjusted to one’s own frequency of…
Author: Simone
Born in 1970 currently live in Florence Italy.
Married with 2 childrens work as IT Technician.
Single Coax Feed to Multi-Band Copper Cactus Antenna
There are three connection possibilities to feed the multi-band copper cactus antenna with a single feedline or coax. However, it is imperative that you use the proper coax for the highest band of operation, RG58 just won’t cut it and even RG8 in lengths longer than 25 feet is marginal in 440 operation. For all…
PC-HFDL
Even if outdated (2002) and unsupported this freeware acars program promise to do the job. HFDL is a HF data link protocol, defined in ARINC spec 635-3 Developed by Charles Brain. Donwload PC-HFDL
Super Morse for MSDOS
Super Morse is the original comprehensive Morse Code training program for the PC. Super Morse permits the user to learn the Morse characters in a very orderly way using several different methods, including one unique to Super Morse; build speed with special exercises; enhance existing operating skills with even advanced exercises; measure progress with a…
The Optimized Wideband Antenna
Yagis for 20m – 10m by Nathan A. Miller NW3Z
The G5RV Antenna
THE G5RV ANTENNA The G5RV is a very popular antenna on the HF amateur band today. Despite it’s widespread use on the bands, there are some myths and misconceptions concerning the G5RV that seem to have a life of their own. Working with text from the ARRL “Antenna Compendium”, Volume 1, I would like to…
Single band copper pipe “J’ Antenna
N6JSX monoband J pole antenna dimensions
A $50 Beverage
by Randall Thompson, K5ZD Originally printed in the YCCC Scuttlebutt #119, October, 1995 I built my first Beverage this past year. It was so easy I can’t believe I lived without one. Here’s how to do it: Go to Home Depot (or other large hardware store) and buy a 500 ft roll #16 THHN or…
The Lattin 5 band Antenna
The antenna was named for W4JRW who invented it and holds a patent on the basic principle and uses quarter wave stubs, which act as insulators at the frequency for which they are cut. For example, the 6’11” stub (quarter wave times the velocity factor 0.8 of the feed line used) blocks RF for 28…
Kenwood TS-2000
General overview From a functional standpoint, the TS-2000 is two transceivers in one box. It is an HF transceiver that incorporates many of the features of the TS-570 and the TS-870 (while adding a few of its own), as well as a variation of the multifaceted TM-D700A. Its delineation is not quite that simplistic, however….