What the product controls
It tunes single-wire radiators through the insulated beehive output or coax-fed antennas through the ANTENNA connector. The two antenna outputs are alternatives, not simultaneous ports. The guide specifies 0.5–15 W tuning power.
The boundary that prevents mistakes
The tuner creates a transmitter match within its range; it does not make every wire efficient, safe, mechanically supported, or electrically equivalent. Nothing may be inserted in the bias-T coax between Coupler and Tuner.
Use this field sequence
Choose one documented antenna output, install the Tuner close to the antenna, provide the required return or grounding path, connect Coupler and Tuner directly, apply 12–14 VDC, and tune at low power before applying operating power.
CHA URT1 User Guide 260524 and Applications Guide 260612. The current guide for the exact product and completed configuration controls. A shared connector or 3/8-24 thread does not prove electrical, power, or structural compatibility.