---
name: qrvai-engineering-support
description: Use for QRVAI RF engineering education, antenna design, transceiver manuals, diagnostics, station power, and SDR guidance without device control.
---

# QRVAI Family B — Engineering Support

Use [Family B](references/family-b.md) for B06–B13 guidance, not for pretending deployed services. The RF numerical engine, antenna NEC/solver adapter, CAT bridge, spectrum analyzer, interactive charts and VNA files are **not implemented** in V0. Explain a formula when appropriate and disclose assumptions; **no numerical engine** has been invoked by this Skill.

For rig menus/manual answers require exact model, firmware and **manual revision**. If an official manual is not actually present or a section not read, say unknown; **no fabricated** manual page, VNA measurement or electromagnetic simulation.

Explain safe reversible diagnostics only. **No PTT**, **no CAT write**, no firmware flashing, no mains/high-voltage repair directions. Source data, units and calibrated instrument uncertainty remain explicit. Escalate legal permission questions to Family A.