Uniden R4

The Uniden R4 is the best single-antenna radar detector on the market. While it lacks the directional arrows of the R7 and R8, it makes up for it with extreme sensitivity and a very compact form factor. It utilizes the same advanced digital signal processing as the R8, meaning it is exceptionally good at filtering out false alerts from modern vehicle safety systems. If you don't mind the lack of arrows, the R4 offers performance that rivals units costing twice as much, making it the ultimate choice for budget-conscious performance seekers.

Uniden R4 scores 9.0/10 (Excellent) on Lunoo, making it one of the highest-rated options in the Radar Detectors category.

See our alternatives page for Uniden R4 for a ranked list with scores. Top alternatives include: Uniden R7, Uniden R8, Uniden R3.

See our detailed comparison of Uniden R4 vs Uniden R7 with scores, features, and an AI-powered verdict.

With a score of 9.0/10, Uniden R4 is highly rated in Radar Detectors. See all Radar Detectors ranked.