YO9EAT – Page 5

Built the ATU 100

2020-11-152020-11-15YO9EATatu100Hardware1 Comment

So, I wanted to add an ATU to the µBitx v5 I have. Because I’m cheap an amateur hobbyist (and I like putting kits together), the decision went to the N7DDC ATU 100 tuner. I got the kit from Aliexpress. The case is from Thingiverse. good quality PCB, no problems in soldering all SMDs already…(Continue Reading)

A 50% successful magloop

2020-11-062022-05-10YO9EATantennasHardware1 Comment

So, winter’s coming which means I can’t keep a balcony window open for hours, in order to keep my fishing pole based EFHW outside. As many of you already know, balcony dwelling isn’t really compatible with HF antennas due to lack of proper space. The only acceptable antenna for apartment dwellers in the winter is…(Continue Reading)

WSPR 2020.10.23

2020-10-24YO9EATrtl_sdr, wsprDigiModes, SDRLeave a Comment

Monitoring WSPR for ~12 hours during the day with the same 20m EFHW. VK3MO‘s setup doesn’t count, it’s way too impressive 🙂

FT8 2020.10.22

2020-10-23YO9EATft8, rtl_sdrDigiModes, SDRLeave a Comment

Monitoring FT8 on 20m for 24 hours with a Raspberry Pi, Gqrx, an SDR stick and the crappiest possible installation for a 20m EFHW antenna.

Anything to 13.8V

2020-10-192020-10-19YO9EAThardware, portableHardwareLeave a Comment

As you know, many/most transceivers want a 13.8 V input – charging voltage of a standard NiMH battery. This does not really match the modern world of LiIon/LiPo chemistry, on which a single cell can have between 3.3 to 4.2V – meaning an 3S pack would be 9.9 to 12.6V (too low) and an 4S…(Continue Reading)