PL-259 vs. N on 430 MHz
(Note: this article is available also in Russian, thanks to Oleg UA9UAX!) [Read also the follow-up: PL-259 vs. N, round 2: hard testing] Ham radio makers often offer […]
English
100 grams 4 elements VHF Yagi-Uda
Introduction One of my favourite hobbies is to trek and climb the Alps and do ham activity wherever I reach. During the warmer seasons, I […]
Dual quad antenna
I have been thinking a while for a simple antenna that allowed me a good DX coverage of 20-17-15-12-10m bands. There are basically two ways […]
Training fast CW on Android (Koch method)
NOTICE: I have released a completely new version 2 of the IZ2UUF Morse Koch CW application. The new application is currently at the stage of […]
Simulating insulated wires with NEC-2
The NEC-2 engine, used by many antenna simulation free programs, has no direct way to simulate insulated wires. This is a pity, because it is […]
Measuring line impedance with MiniVNA
Today I wanted to measure the characteristic impedance of a unknown transmission line; in this case, it was a Hi-Fi stereo line I bought from […]
VHF coverage maps
Thanks to the great Radiomobile software by VE2DBE I have been able to calculate a coverage map for the 2m band from some ham stations. […]
Using a Wouxun/Kenwood USB cable as a Yaesu FT817/857/897 CAT connection
I was looking on the internet for a cable to connect my Yaesu FT857 to my PC.Aside of the expensive official cable, there were the […]