With GWEN handling constant voice, teletype and other data traffic, interference was noticed by local power companies on a diagnostic two kilohertz side carrier tone--if the carrier disappeared, the power grid would interpret that as a system fault.
Interference was noticed by local power companies on a diagnostic two kilohertz side carrier tone. This was with GWEN. This GWEN was handling constant voice. This GWEN was handling teletype. This GWEN was handling other data traffic. The power grid would interpret that as a system fault. The carrier disappeared.