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Atlas 220-CS / 200-PS power supply – stabilisation with TL431

Original Atlas power supply (220-CS or 200-PS) has zener diode for 13V (1N5350) and together with 1N4005 diode, provides 13.7V on the output. Zener diodes change their parameter with increasing temperature, so it can happen that they “slip” when the

marcony September 30, 2021September 30, 2021 Radio Read more

Amateur Satellite Radio Communication – Part One

Description of radio amateur narrow/wide band communication via the Es’hail 2 / QO-100 satellite.

marcony November 20, 2019November 20, 2019 Wireless Read more

5GHz WiFi and radars – how often does it hit?

Checking 5GHz on radar signals.

marcony September 6, 2019October 30, 2020 Wireless Read more
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