The DXAR8108 is often re-badged under several brand names (e.g., Retevis, Radtel, or generic Chinese OEM). Go directly to the support page of the seller you bought it from.
Fake manuals are often scanned copies of copies. Look for ghosting, crooked pages, or missing diagrams. A verified manual will have crisp vector graphics, especially of the radio's keypad and LCD screen. dxar8108 radio user manual verified
(If exact numbers required, verify against manufacturer spec sheet or label.) The DXAR8108 is often re-badged under several brand names (e