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Technical Topics => Equipment => Topic started by: Outpost on June 08, 2026, 1721 UTC

Title: 30m radio beacon with solar power
Post by: Outpost on June 08, 2026, 1721 UTC

I have started trying to get a beacon up and running using a 10W ebay tx originally built for 13.56MHz but converted to 10.140KHz. The transmitter is powered down to 2,25W due to power constraints. It will be controlled using a Arduino Micro that checks voltage, temperature and number of cycles. TX will be done by CW at 15 speed. Intervall will probably be variable depending on battery voltage, i only have a small 10W solar panel.

The Arduino Micro has a sleep mode i will try to get the idle current down, and the TX has 14mA idle current, and 600mA at transmitt. The box is designed to be strapped to a wooden post and left there without taking in water. The radio beacon will be tested in southern scandinavia.

(https://i.postimg.cc/y8v75bg7/image.png)

Title: Re: 30m radio beacon with solar power
Post by: Teotwaki on June 21, 2026, 2133 UTC

Can you please repost the picture?