The DXZone.com Amateur Radio Internet Guide

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FT4 Frequencies

Posted:
https://www.dxzone.com/ft4-frequencies

FT4 Frequencies for HF and VHF bands as listed on WSJT-X.

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Mini Satellite-Antenna Rotator Mk2

Posted:
https://www.dxzone.com/dx33898/mini-...tator-mk2.html

Technical Reference/Antenna Rotator
Design and construction of a mini satellite-antenna rotator. It used some
small DC motors and a novel combination of 3D magnetometers and
accelerometers to provide absolute azimuth and elevation feedback.