How the system behaves
Remove RF and tuner power before touching the mount or radiator. Inspect the rod, threads, fasteners, tuner retention, cable strain relief, support stability, isolation boundary, and public clearance; lower the system when wind or load is uncertain.
The boundary that prevents mistakes
URT1-MB can make a compact feed-point-tuned vertical or TDL installation possible, but every added whip, extension, or hub increases leverage and introduces electrical choices. A 3/8-24 fit is not an approval for an unlisted configuration.
Use this field sequence
Attach it to the supported mount or structure, carry tuner and cable loads through the intended mechanical path, install the exact documented radiator, return, isolation, feed, and control parts, then inspect leverage and clearance before energizing the tuner.
CHA URT1 User Guide 260524, Applications Guide 260612, and current product record. Use the exact current configuration, components, feed, support, geometry, power, and safety limits; mechanical fit does not establish compatibility.