Yokohama WWII Japanese Military Radio Museum is located in the first floor of founder and director at the residence of Takashi Doi in Yokohama. Inside are several rooms of WWII Japanese radio and radar equipment, plus other related displays. The collection contains many rare and unique examples, not present at any other museum in the world. The majority of the collection is Japanese radio and radar equipment, but also includes a few other artifacts and displays that represent American radio equipment for comparison.
Tunnel Discovery Radar Set
During 2002, two radar sets were discovered in a tea plantation shed in a a mountain tunnel in Shizuoka Prefecture. After the discovery, one radar set was donated to the Yokokhama Radio Museum. The second radar set was donated to the Numazu Meiji Shiriyoukan (Numazu City Museum).
Japanese Submarine I-401 Artifacts
The museum has several relics from the Japanese submarine I-401 that were taken by an American prior to the sub being sunk off Hawaii. Included is the 140mm gun sight and bomb site from one of its M6A1 Seiran.