335th Radio-Technical Regiment
Identification
Military unit 18401 is identifiable in open sources as the 335th Red Banner Radio-Technical Regiment in the Yaroslavl area, formed in 2009 from the 6th Red Banner Radio-Technical Brigade. The brigade lineage traces back to the 61st Radio-Technical Regiment created in May 1952 from the 72nd independent VNOS battalion; a 2012 report from the site also linked the regiment to that wartime 72nd radiobattalion heritage. ([ww2.dk](https://www.ww2.dk/new/pvo/radar/6rtbr.htm))
Main garrison
The record matches the south-of-Yaroslavl cantonment cluster around SeliFontovo and Prokhorovskoye rather than a city-center office. A January 18, 2012 local TV report described the regiment as located in SeliFontovo, while a 2022 Yaroslavl district election document groups v/ch 18401 with SeliFontovo, Prokhorovskoye, Belkino, Kormilitsino and nearby villages; a 2022 court summary also references Ministry of Defense boiler-house property for v/ch 18401 in military town 311 at Prokhorovskoye. ([gtk.tv](https://www.gtk.tv/news/18083.ns))
Role
Public reporting from January 18, 2012 described the regimental command post as responsible for radiolocational reconnaissance in peacetime and for passing combat information in wartime. The same report said more than 100 regiment personnel were then on combat duty controlling the use of airspace, and that at that time it was the only military unit in Yaroslavl Oblast on permanent combat duty. ([gtk.tv](https://www.gtk.tv/news/18083.ns))
Distributed sites
The placemark spread is consistent with a dispersed radar network, not a single fenced base. Historical brigade organization published by ww2.dk places subordinate radio-technical battalions and companies at Enyukovo, Dorokhovo, Verkhnevolskiy with outstations at Borisovo-Sudskoye and Belozersk, Tunoshna with Konstantinovskiy, Bolshoye Andreykovo, and Vytegra; these locations align closely with several supplied coordinates in Vologda, Tver, and Yaroslavl oblasts. Open-source dislocation tables for the post-2009 regiment also list suffix sites such as 18401-A at Gorodets and 18401-M at Ogar'kovo, matching additional placemarks, but exact current activity at each outsite is not publicly confirmed. ([ww2.dk](https://www.ww2.dk/new/pvo/radar/6rtbr.htm))
Confidence and gaps
Identification confidence is high that this record refers to the Yaroslavl-based 335th Radio-Technical Regiment / v/ch 18401 together with detached radar positions associated with the same unit number. The sources reviewed do not publicly confirm the regiment's exact 2026 higher-echelon subordination after recent reforms, its current radar inventory, or which legacy detached sites remain active versus abandoned; those points should be treated as unverified in open sources. ([ww2.dk](https://www.ww2.dk/new/pvo/radar/6rtbr.htm))