FTC4K-D - 4000 W FM Compact Transmitter


The FTC4K-D compact Transmitter is manufactured with state-of-the-art and highly efficient LDMOS transistors which reduce the  Operating, cooling and maintenance costs and are more durable

FTC4K-D compact Transmitter is equipped with analog audio, AES/EBU, MPX, I2S inputs.  All of them are processed in FPGA and converted to digital signals and FM waves are produced with minimum noise level.

Direct to channel modulator delivers superb signal quality and crystal clear sound with unrivalled performance.


Remote Control

The FTC4K-D compact Transmitter comes with cloud-compatible remote control software with simple interface. All the features of the device can be viewed and controlled via the built-in web server or OnAir service center. With 3G/4G USB support, the device can be easily controlled even in rural areas with mobile phone signal thanks to cloud support.


Built-in RDS Encoder

Thanks to the built-in RDS encoder and the special web protocol we have developed, we work with most of the radio automation software and automate the release of the song and artist name.

Silence Detector

Thanks to the built-in silence detector, it detects the sound interruption in the broadcast, sends you a warning message if you wish, and activates the backup audio service if you wish.


Audio Backup

FTC4K-D compact Transmitter features multiple backup audio sources (analog audio input, AES/EBU, MPX, I2S, IP audio, built-in audio player). In the event of audio interruption, changing the audio sources according to your preference ensures that your broadcast always has a sound.

IP Audio

With the built-in audio Analyzer, Shoutcast, Icecast, HE-AAC v1/v2, MPEG-1 layer 3 compressed audio streams, OGG compressed audio streams, and uncompressed PCM audio streams can be analyzed over IP networks. It works easily anywhere with internet access, even on firewalls or custom routed networks, without the need for high audio quality and human intervention.

Integrated Audio Player

FTC4K-D FM compact Transmitter supports MP1, MP2, MP3, OGG, AAC, HE-AAC, MPEG-4 ALS, OGG Vorbis, FLAC, Musepack, SPEEX, and WAVE file types. With the built-in 8 GB memory, you can store approximately 1000 hours of audio recording.

E-Mail and SMS Notifications

In case of any warning or error, the device sends E-Mail and/or SMS notifications to the specified email addresses and phone numbers.

N+1 Redundancy System

FTC4K-D FM compact Transmitter is ready for the n+1 backup system. Identification of spare devices and connections are made easily.


Main Features

  • Very compact case
  • Measurement and display of the transmitter’s working parameters
  • Direct to channel digital exciter with built in RDS encoder
  • Excellent audio performance is ensured by advanced digital signal processing technology (24-bit analog converter)
  • Built-in silence detector (adjustable time)
  • Built-in automatic audio source selector
  • Compatible with SFN
  • RDS Alarm contact
  • Automatic start/stop of the airconditioner
  • Ready N+1 redundancy system
  • Self Managing System
  • Event logs can be seen on display or printed out with date&time of event
  • All parameters can be remotely controlled by TCP/IP
  • High reliability use of Microstrip Technology
  • Forward power, reflected power, heatsink temperature, transistor current and voltage protections
  • Built in silence detector, failover to integrated audio player or IP audio (Adjustable time and threshold)
  • Audio input selection between transmitter audio input, IP audio, integrated audio player
  • Event logging (Notificaton over e-mail, SMS and Onair Service Center)
  • Remote Control over Internet, TCP/IP and Onair Service Center
  • Internal IP Audio Decoder (Shoutcast, Icecast, Mpeg TS, Mpeg2 TS, Flacstream, PCM Stream)
  • N+1 Redundancy system ready
  • Automatically determines the operating parameters for maximum efficiency when frequency or output power is changed.
  • A clean start can be made by returning to factory settings
  • Broadcasting artist and song title over RDS (compatible with many radio automation software)
  • Cellular internet connecton supported using 3G/4G USB stick


Comparison of FTC and FTC-D





MPX input


AES/EBU input


S/N ratio




Automatic audio source selection

When L&R audio source is cut off, MPX or AES/EBU can be selected automatically

Printer port

It is used to print out the event logs

N+1 Redundancy system

Maximum 7+1


when temperature or humidity is high you can run air-condition automatically


It is to communicate between Onair transmitters


It is used to program the internal RDS via satellite or to get print out of events


It is used to update the software of control system


It is used to stop the transmitter in case of emergency

Room temperature protection


Humidity sensor


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