Do you have trouble getting your mobile signal into the LEO satellites? Try this small 2 meter vertical antenna with your mobile rig or HT and enjoy more success in your uplink. I built this small vertical because I could not uplink very well at low elevations and I just could not bring myself to…
Author: Simone
Born in 1970 currently live in Florence Italy.
Married with 2 childrens work as IT Technician.
Calculate your antenna gain
More than ten years ago a humorous article on antenna gain was published in the ham radio magazine “QRV.” The article stated that there are three kinds of gain: 1. the dB/d and dB/i gain based on CCIR regulations (the true and honest real gain!)2. the “dB/ham radio gain,” which is 6dB higher than the…
Halo antenna for 70Mhz
Concepts The halo is an omni-directional antenna with horizontal polarization. This is practically a horizontal loop, namely a half-wave folded dipole, with its endings slightly separated. The feeding is done through a system called gamma-match with the condenser obtained by inserting the central core of rg58 cable including the insulator, inside the aluminum tube that…
Endfed 20/30 Mtr Antenna
I’ve had good luck with an endfed antenna on 20 and 30 meters. Depending on available trees/supports I can arrange this antenna as an inverted vee, a sloper or a horizontal 1/2 wave. It functions an endfed zepp on 20 meters consisting of a 1/2 wave 20 meter wire (33′ 3″ long) endfed with a…
EH Antenna calculator
A simple EH Antenna calculator that will help you in calculating turns a spacing of antenna traps Download EH Antenna Calculator
Zakanaka
Zakanaka, a digital mode decoding and terminal program written by Bob Furzer, K4CY. Bob is also the author of Logger, a logging program with a PSK31 decoding and terminal module that runs under Windows 95/98, Windows 2000, and Windows NT Was originally intended to decode PSK31, RTTY, and CW. During November 2000, K4CY added RTTY…
WD5HOH Regenerative (REGEN) Radio Receiver
This web page describes a small, single tuned circuit regenerative receiver primarily for daylight reception in the 16, 19, 22 and 25 meter international shortwave broadcast bands. I have attempted to incorporate every improvement I have thought of into this receiver, including maximum mechanical rigidity and electrical shielding. This receiver is suited for reception of…
Levy F9HJ Antenna
A multiband antenna based on the Levy antenna model Multi-band on 40 m, 30 m, 17 m, 15 m, 12 m, 10 m Easy and rapid build and install Minimum QSJ
Half Sloper for 160 meters
A Reduced-Size Half Sloper For 160 Meters in Italian By Bob Kirk, WD8DSB English version Un Half- sloper per i 160 m di dimensioni ridotte.Traduzione di IK2PTR, rivisto e corretto da IW5EDI Avete mai pensato di provare i 160 m ? L’inverno è il periodo perfetto per esplorare la “top band “.L’atmosfera è relativamente quieta…
Apartament Antennas
Low profile operating APARTMENT ANTENNAS Successful apartment operating starts with an evaluation of the location. Are you lucky enough to be on a upper floor? Is there trees outside? How about a deck? Maybe even access to the roof. Any of these situations can be advantageous. One thing to remember with apartments is to try…