SkookumLogger can interface with the “Data In/Radio” serial port on an SDA 100 controller in order to automatically adjust the antenna to the transmit frequency of Radio 1. To enable this feature:

When Radio 1 changes transmit frequency and the new frequency differs from the previous frequency by more than 9 kHz, SkookumLogger sends the new frequency to the SDA 100. The 9 kHz hysteresis prevents unnecessary antenna adjustments if you happen to change transmit frequency often across an SDA 100 tuning segment boundary.

SkookumLogger  3.13  © 2023 K1GQ