: Potentiometers (knobs) and switches frequently require cleaning with contact cleaner to resolve "scratchy" audio or intermittent signal loss. User Experience & Performance Sound Profile
The is a testament to 1990s Japanese engineering. It lacks Bluetooth, GPS, and color screens, but it does one thing exceptionally well: it talks and listens on UHF frequencies with crystal-clear audio and brute-force reliability. kenwood tk-66