Dan Koellen AI6XGJul 18, 202311 minMaking the KD1JV Tri-Bander More SOTA FriendlyThis post outlines the modifications made to reduce receive current consumption, reduce weight and size, and change the controls and readout
Dan Koellen AI6XGMay 2, 20236 minHigh Voltage DC to DC Supply EvaluationThe high voltage supply for the vacuum tube transmitter needs to be low noise in the 40 meter band, efficient for battery operation and...