Why this reprint? You may get some goals here: Download PC boards ready to foil print Download complete data sheet of the relay used Get more construction details This reprint is made under kindly permission of the author, Thomas Moliere, DL7AV [reprinted from the CQ Contest November 1998, p. 8-13] […]
This table, in a slightly different format is found in: Arthur R. von Hippel, ed.: “Dielectric Materials and Applications”, M.I.T. Press, Cambridge, MA, 1954. It was posted on the NEC-LIST, and I foolishly forgot to note the poster’s name, who should be credited The temperature for all tables is 25C. […]
The term “Ufer” grounding is named after a consultant working for the US Army during World War II. The technique Mr. Ufer came up with was necessary because the site needing grounding had no underground water table and little rainfall. The desert site was a series of bomb storage vaults […]
To err is human
That aphorism by an ancient Roman philosopher contains an unexpressed thought: that man, recognizing his error, can correct it, surpass himself, and approach perfection.
And here is another term, circulated by the operators of rare DX stations who reside in exotic locations and by those who spend time and money on DXpeditions and contest operations. It is "European behaviour", this term is used by our friends across the pond and assumes too much. "European behaviour" negatively characterises the conduct of amateurs from more than 50 European nations, so different in origin, culture, language and temperament, that it is difficult to find for them a common denominator. These operators firmly allege that in most every occasion the much-trumpeted amateur spirit of friendship and international co-operation is forgotten, when arises Hamlet's question, To work or not to work a new one?
Just to remember the old (but still good) antenna tricks, here is a brief description of the W3EDP antenna. It is included here because I worked some DX stations operating from portable sites with very strong signals. I asked “what antenna are you using” and they replied “a W3EDP”. So, […]
For many years seamen and navigators have been referring to Greenwich Mean Time (GMT) as “Z-time”. GMT has been noted as Greenwich Civil Time (GCT) and lately with the advent of a universal community as Coordinated Universal Time (UTC). Note that the initials UTC do not fit the words Coordinated […]
Russian prefix system effective since January 21, 2010 Classes and Prefixes 1st Class: R0AA – R9ZZ (except HQ suffix); RA0AA – RZ9ZZ (except RB0-RB9, RE0-RE9, RH-RH9, RI0-RI9, RP0-RP9, RR0-RR9 and RS0-RS9 prefixes); UA0AA – UI9ZZ; RA0A – RZ9Z (except RB0-RB9, RE0-RE9, RH0-RH9, RI0-RI9, RP0-RP9, RR0-RR9 and RS0-RS9 prefixes); UA0A – […]
by Barry Boothe, W9UCW, QST December 1974 Mobile operators and those who reside on property of city-lot size should findthe author’s treatment of physically shortened 160-meter vertical antennas of considerable interest. Construction details are given here for making his Minooka Special from readily available inexpensive materials. Performance is reported […]
Comments on the ‘No Code Proposed for for All U.S. Classes’ Read it (click here) and weep. (K5**) What’s to weep about? I’m sure ARRL will be thrilled by this, since this is what they’ve wanted all along. They’ve been pushing for reduced standards for as long as I can […]
Hipersil, what’s behind? by Will Matney I was asked about a transformer using nothing but a Hipersil transformer. I offered an EI type, M6 material transformer of the same specs, but it wouldn’t do. Well folks, this gave way to me writing this for all on what exactly is […]