26
August
2020
Balcony antenna 7-28 MHz from a fishing rod, with automatic tuner
15:45

Balcony antenna 7-28 MHz from a fishing rod, with automatic tuner

Due to the accessibility of the balcony at my place of stay, I decided to install the Ground Plane antenna on all amateur bands 7-28 MHz, and, if I can tune it, then on 3.6 MHz. The design from the article was taken as a basis http://www.dk3red.homepage.t-online.de/de/s15_01.htm. The antenna is a fishing rod with wire wound around it, a tuner at the base, grounded on the railing or glazing frame of the balcony.

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12
May
2020
Attenuator for sound card
10:44

Attenuator for sound card

12 May 2020 10:44

When combining the operation of digital types of radio communications, you need:

  • First, to coordinate the signal levels between the two devices,
  • Secondly - maintain the signal level within certain limits (regulation of the output level).

This article is devoted to a home -made attenuer to weaken the sound signal for digital species.

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