Author Archives: Simone
Florence HamFest 2016
Also this year I will be attending at the Florence HamFest. This amaeur radio fair has become a reference event in the ham radio panorama in Italy and it’s also becoming famous among the closest coutries, like France, Spain, Germany, Austria and Croatia. The particularity of this event is that is a fair dedicated exclusively
160 Meter linear loaded Tee vertical doublet antenna
I decided to publish this website in order to pass on some insights about this antenna that I’ve garnered through extensive experimentation. A warning though, some of the combined design aspects of the antenna may be unique and unorthodox, a think out of the box antenna design. Note! I do not have a B.S. or
Cubical Quad Design
The frequency scaling formulas for Cubical Quad antennas are shown in this picture. Note that frequency is measured in Megahertz {MHz} and the total length of each element is measured in feet {ft}. The spacing of each element is the same and all directors are the same size. The gamma match uses a small air
Programming VHF/UHF Radios
The purpose of this article is to give you an idea of what you will need to do to set up a new radio for basic Simplex, Repeater, and Memory operation so that you will have an idea of what to look for and concentrate on in the instruction manual for your radio. Programming a
MARITIME NETS – On Maritime Frequencies
I can’t verify if these info are still valid and in use. I stored here for reference. Atlantic Weather – Controller Herb Hilgenberg – Callsign SOUTHBOUND TWO Time Area Frequencies Chan No 2000-2200Z Atlantic/Caribbean Weather 12359 kHz 12C 1940-2000 Check IN 12359 kHz 12C Caribbean SSB Weather Net – Controller Dave Time Area Frequencies 1230-1300
Discone Antenna for RTL SDR
I have been getting into software defined radio via RTLSDR and found the stock antennas woeful for reception and picked up a tonne of noise from my LCD and laptop – though it’s hardly surprising. So to improve the situation and spend as little as possible I decided to make a discone antenna. After some
200 Morse Code QSOs
Download Files MORSE1 MORSE2 These are 200 Morse Code QSO`s which might typically be heard on the HF bands. They were designed to give people who are learning Morse Code some practice with real life Morse contacts, rather than using text passages from books, or random letters generated my computer. It is intended that the
Rotatable Dipoles
Ultra-portable 5ele 144MHz Pocket Portable Yagi
Please feel free to build or distribute the information on these antennas. G4DHF retain the copyright to the designs and ask that they are not manufactured for commercial gain. Introduction This is a design for a 5 element 2 Metre beam with a forward gain of 8dBD and a front to back ratio of over