In plain language: The CHA TACYAGI-70 is a UHF directional antenna, so feed-line loss and adapter count matter much more than on a short HF portable run.
Why this matters in a Chameleon system
The guide recommends careful cable type and length. CHA COAX is 12 feet of RG-58C/U with PL-259 at one end and BNC at the antenna; a longer run needs the proper SO-239 barrel path and loss check.
Build or diagnose it this way
- Keep the UHF feed line as short as practical.
- Use BNC at the antenna and verify the station-end path.
- Support cable weight away from the gamma match.
- Check continuity, shorts, and adapters before touching the factory-tuned match.
Wrong turns to avoid
- Treating TACYAGI as VHF equipment.
- Adding long RG-58 without calculating loss.
- Adjusting the gamma match before checking coax.
Source boundary
TAC YAGI User Guide 250207. Product revisions can change supplied parts and limits; the current product guide controls.
