KE2XCC

KE2XCC, first authorized in 1945 with the call sign W2XEA, was an experimental FM radio station located in Alpine, New Jersey and operated by inventor Edwin Howard Armstrong. It was located at the same site as Armstrong's original FM station, W2XMN, which dated to the late 1930s and primarily transmitted on the original FM "low band" frequencies. W2XEA was established as a companion station operating on the new FM "high band", which had been recently designated by the Federal Communications Commission as the replacement for the original FM station assignments. W2XMN shut down in 1949 after the "low band" was eliminated, and at this time W2XEA changed its call sign to KE2XCC and took over most of the functions previously performed by W2XMN.

W2XEA was originally assigned to transmit on 92.1 MHz. This was changed in 1948 to 93.1 MHz, where it remained, as KE2XCC, until it ceased operations shortly after Armstrong's death in early 1954. In addition to general broadcasting to promote FM's popularity, the station was used to conduct the research that led to Armstrong's introduction of a new multiplexing transmitting system in 1953.