Unsure what they intended use of this transformer was but most likely output judging by the impedences and the 30madc primary current rating. In great condition. 1.5 inches wide, 2.25 inches tall, 1.8 inches deep. 300hz-3khz freq response. Says rola on side, but could have been made by Raytheon or amphenol according to spec sheet. Tested and all winding working.