Start with the decision: Before troubleshooting MCC 2.0, remove RF and inspect the coil winding, slider/contact, whip, CHA BLANK/feed point, SS INSULATOR where required, threads, feed line, mount, and complete radial or counterpoise system.
What changes the result
The exact MCC recipe controls whip type, coil location, feed point, SS INSULATOR, mount, feed line, artificial RF return, initial setting, final tuning, power, and support.
The mistake to avoid
SS25 is not documented with MCC 2.0/PRV 2.0. A 3/8-24 fit, tuner match, or remembered coil position does not authorize a new recipe.
Use this practical sequence
Choose one documented build, assemble and inspect it with RF removed, deploy its exact return, sweep broadly at low power, make one adjustment at a time, and record the final installed setting.
Source boundary
CHA PRV 2.0 User Guide 260504 and controlled MPAS READY records. Use the exact current product, complete configuration, and applicable safety limits.
