What does eagle comtronics EZHP-50-021 high pass cable filter do?

Question

how does it work and can it be traced

Answer 1

http://www.eaglecomtronics.com/Products/Traps_/Sub_Low_Filters/sub_low_filters.html

Answer 2

Eagle Comtronics

Answer 3

I had a similar scenario in my mind. Like how we found out 20 years after the Vietnam War was over, that the "Gulf of Tonkin" incident that started the war... well... It never happened. From Wiki: The Gulf of Tonkin Incident defined the beginning of large-scale involvement of U.S. armed forces in Vietnam. It was a pair of supposed attacks carried out by naval forces of the Democratic Republic of Vietnam (North Vietnam) against two American destroyers, the USS Maddox and the USS Turner Joy. The incident occurred on August 2 and 4, 1964 in the Gulf of Tonkin.[1] The outcome of the incident was the passage by Congress of the Gulf of Tonkin Resolution, which granted President Lyndon Johnson the authority to assist any Southeast Asian country whose government was considered to be jeopardized by "communist aggression". The resolution served as Johnson's legal justification for escalating American involvement in the Vietnam Conflict, which lasted until 1975. In 2005, it was revealed in an official NSA declassified report[2] that the Maddox first fired warning shots on the August 2 incident and that there may have been no North Vietnamese boats at the August 4 incident. The report said [I]t is not simply that there is a different story as to what happened; it is that no attack happened that night. [...] In truth, Hanoi's navy was engaged in nothing that night but the salvage of two of the boats damaged on 2 August.[3]