In May, I once again headed to JN8xx above the village of Horná Súča, in the Vlčí vrch area. This time, however, several changes had been made to the VKV…
Tag: yagi
A Yagi is a directional antenna consisting of a single active element (driven element) and multiple passive elements (reflector and directors). It is used on both HF and VHF/UHF.
2nd Subregional VHF Competition 2021
The weather forecast for the race didn't bode well for the stations at the high points—thunderstorms, rain, wind, and a drop in temperature. Since I wanted to test the R2CW…
VKV PA – April 2021
During one of my walks in the area, I noticed an interesting view from the JN88xx location. I used the Dioptra program to analyze the horizon. To the southeast, Chabová…
OM0A CQ WPX SSB Contest 2021
OM0A is a must in the CQ WPX SSB Contest! In a contest with limited time and antennas, choosing the right category is the most important thing. Under current conditions,…
OM LOW POWER VHF CONTEST 2020
Low-power contests are a challenge. You won’t know until you try. The Slovak amateur radio portal CQ.sk is organizing a QRP contest on VHF, which will take place on Sunday…
EME's Beginnings in 2011
I’ve always been drawn to unconventional methods of VHF communication. My first amateur radio contact took place on the 2-meter band while I was preparing for my amateur radio exams…
DL7KM Antenna for 432/435 MHz (70 cm)
An advantage of the DL7KM 70-cm antenna is its wide bandwidth, which reaches up to 30 MHz for PSV < 2. As a result, the antenna is less complex to…
YU7EF EF0206 Yagi at 144 MHz
Why a YU7EF Yagi? 50-ohm feed without lossy matching circuits Broadband performance, which also provides tolerance for manufacturing tolerances and sensitivity to the surrounding environment Suitable mechanical dimensions Declared gain…
IARU Region 1 50 MHz Contest
The IARU Region 1 50 MHz Contest will take place on the third weekend of June, June 16–17, from 14:00 UT to 14:00 UT. The exchange consists of RS(T) +…
Modified Yagi Antenna for the 10-meter Band
Yagi Due to low solar activity—and thus a small number of potential stations—we used only a simple antenna, such as a CB vertical, for the 10m band in contests. In…
OM0A CQ WPX Contest Story 2010
Exactly one year ago, the OM0A contest team came together for the first time to participate in the CQ WXP Contest. Now we had the chance to see how much…
The Story of the IARU HF Championship
The IARU HF Championship presented the OM0A team with a new challenge—to compete in the multi-single category using Morse code. This is the only category in the contest designated for…