The HB1A is an awesome little rig with many hidden secrets.
Mine was reading a little higher than the actual battery voltage I was using. While it was open, as it often is nowadays, I noticed a trimpot (UR1 Bat) more or less in the middle at the back of the PCB
Adjusting this trimpot, I was able to get the correct battery voltage indication on the LCD display.
The next mission – Power output issues need to be resolved ….
73 de Eddie ZS6BNE