to the pcn frequency and the band pass filter 12 is tuned to the pcs frequency the band pass filters 10 11 12 can be configured either as separate components on the upper or lower side of the main casting or can also be constructed from passive components integrated in the passive module as regards the switching module configuration the transmitter inputs 2 of the switch 1 are electrically connected to transmitter amplifiers 13 the transmitter amplifiers 13 are tuned like the low pass filters 5 6 to the gsm or pcn pcs radio frequencies as the case may be the receiver inputs 3 are electrically connected via the band pass filters 10 11 12 to receiver amplifiers 14 whereby the receiver amplifiers 14 are tuned to the gsm or pcn pcs radio frequencies as the case may be the output 4 of the switch 1 is connected to an antenna 15 the signals received by the antenna 15 can now be sent by means of the switch 1 either to band pass filter 11 band pass filter 12 or band pass filter 10 where they are filtered according to the radio frequency used and further processed in amplifiers 14 the signals sent by the transmitter amplifiers 13 are filtered through the low pass.