Description
Narda AFD21A8289-42 Duplex Filter for the 800 MHz cellular phone band. Ports for ANT, Rx and Tx. 19 adjustable resonators in the Tx path and 17 in the Rx path. Rx (in a base station) is listening to 835 - 849 MHz and the Tx in a cell operates in the 869 - 894 MHz band.
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