Hi Sean, were you able to identify the equipment manufacturer in case it’s a WISP on that same tower? Often good to have SMs / CPEs of various manufacturers for that. From: NANOG [mailto:nanog-bounces+colin-lists=highspeedcrow.ca@nanog.org] On Behalf Of Sean Heskett Sent: Wednesday, July 14, 2021 1:42 PM To: NANOG list <nanog@nanog.org> Subject: T-Mobile RF contact I realize this isn’t an RF list but was hoping someone on here could point me in the right direction. Does anyone know how to get in touch with a T-Mobile RF engineer? Our CBRS network has been receiving heavy interference from what we believe is a new T-Mobile site at an American tower facility. The equipment isn’t registered with the SAS and appears to be operating in the part 90 portion of the band 3650-3700mhz as a part 90 device and not a part 96 CBRS device. American tower has been no help other than opening a ticket. Federated is our SAS vendor and they haven’t been any help either other than telling us it’s not in the SAS. I’ve also done an application search in the FCC auction 105 (CRBS) site, but T-mobile must have been bidding under a different name. Any help is much appreciated, -Sean Heskett 970-846-8065 -- Sean Heskett ZIRKEL Internet • WiFi • Phone • TV 970-871-8500 x100 - Office