16, 1983 it was blown up. Its concrete foundations and the tuning house, which once stood under the tower, can still be seen today. Services transmitted Bavarian Broadcasting Company The transmission facility Ismaning is used for transmitting the first program of the Bavarian Broadcasting Company on the medium wave frequency 801 kHz (transmission power 600 kilowatts until 1994, now 100 kilowatts) and for all programmes of the Bavarian Broadcasting company in the FM range. Until 1994 there was also a transmitter of the American Forces Network (AFN), with its AFN Munich station, at Ismaning. For the AM transmissions a 171.5-metre-high guyed steel tube mast is used. This mast is insulated from the ground and is designed as a fading reducing transmission aerial with multiple feeding. Therefore, it is separated at 56 metre and 117 metre heights by insulators. Restrictions of the waveplan of Geneva required a minimum of radiation in direction Northeast, in order to reduce interferences of the transmitter Saint Petersburg, Russia, on the same frequency, if transmission power is 600 kilowatts at night. Therefore, in 1978 a 71-metre-high guyed steel-framework mast, which is insulated against ground, was built near the mast upper mentioned. Because a power reduction toward Northeast is not necessary with a transmission power of 100 kilowatts, this mast is now obsolete, but it is still there. As back-up aerial a 105-metre-high, guyed steel framework mast was built in 1947 close to the transmitter building. This mast, which was originally used for transmitting the program of AFN was until 1969 126 metre high and carried from 1958 to 1969 aerials for FM transmissions. Restriction by the waveplan of Copenhagen had the result, that the mediumwave transmitter of the Bavarian Broadcasting Company had to work with directional radiation with minimum toward Northeast after 1951 at nighttime. This type of radiation was not possible with the aerial on the wood framework tower and a directional aerial consisting of two insulated guyed radio masts with a height of 94 metres had to be built. This aerial was until 1969 for transmitting the program of the Bavarian broadcasting company during nighttime in service. After 1969 it was used until its shutdown in 1994 for transmitting the program of AFN on 1107 kHz. In difference to the time before 1969 omnidirectional radiation was used. One mast was used and the other one was a spare unit. As aerials for shortwave transmissions