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Technical blog

ARDF European Championships-2019

  Today on Workshop meeting the known radiosportsman and radiodesigner Oleg Shuman (UT5UML) told about a recent trip to the European Championships 2019 on the sporting radio homing, held in Slovenia. Official website of the event: http://ardf2019.hamradio.si/   …

VHF / UHF antennas and design features

The theme of the workshop this Wednesday became VHF/UHF antennas and design features. Speaker: Denis Nechitailov,UR8US. We discussed the types of matching antennas, especially the propagation of radio waves in the VHF / UHF. Vertical and horizontal …

Velocity Factor

The topic of this Workshop was devoted to the Velocity Factor. We studied how this velocity factor varies depending on the frequency. The guide says that “the velocity factor for cable RG-58 is 0.66”. It turns out with …

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