E5 is one of the most distinctive number stations, and is an English language counting station. It features a female voice with a distinct American accent counting five figure groups. The E5 station is also known as “Cynthia” or “The Counting Station“. It has been around since the 1970’s, and can he heard on any day of the week. it has been noted in the early morning, around midday, at various times in the afternoon, and during the evening. It sticks to a strict schedule and transmissions begin on the hour. The mode of the transmission is a bit unusual, It’s an upper sideband with a carrier – which means its on AM but with the lower sideband suppressed. It can be heard on an AM receiver, provided the signal is a reasonably strong one. If the signal is weak it sounds clearer on USB mode. Once the transmission ends the carrier usually stays on for a few more minutes and a distinctive background noise can be heard. The station is thought to be operated by the CIA and is known to transmit from various locations including United States (Warrenton – Virginia), Panama, Guam, Ascension Islands, United Kinggom (Barford St John, Oxfordshire), Germany, Spain, Portugal, Greece, Turkey and Morocco.