professional FM stereo transmitter, digital exciter used, AES/EBU input directly, microstrip combiner. ZHC618F-3KW FM TransmitterInnovative digital fm stereo transmitter for professional radio ... .5~108MHz(other frequency can be ordered)3. Analog input resistance: 600ohm, balance4. Digital input resistance: 110ohm, balance5. Output RF connector: 7/8 ...