A later development was the provision of small AM repeater stations, both National and commercial, at a different frequency but bearing the same call sign as the primary transmitter. This list does not include the many Australian Community radio Broadcasters except as they relate to National or Commercial broadcasters, and with a few exceptions ignores studios, programme material, personalities, networks, branding, slogans, and target audience. A large number of AM radio stations were established by Australian and US forces in bases to the north of Australia in the years 1943–1946, of which around 20 were operated by the Australian Army Amenities Service. This is an incomplete list of those overseas broadcasters whose callsign commenced with "9". 9AT in Kure, Japan operated during the post-war occupation period.