FT5K-D - 5 KW FM Digital Transmitter

5000 W FM Digital Transmitter 

5000 W FM digital transmitter in a 19" Rack. Composed by FTC50-D exciter and FA5K power amplifier. 
Direct to channel modulation with built-in RDS encoder and stereo coder. 
Inputs: L&R analog audio, AES/EBU digital audio, MPX 
Main features: Remote control, event logs, silence detector, automatic audio source selector, RDS Alarm contact, automatic start/stop for airconditioner, ready for N+1 redundancy system


FT5K-D - 5000 W FM Digital Transmitter designed with the latest LDMOS transistors, which ensures high efficiency. Operational costs, heat and cooling costs, maintenance costs are reduced, and life span is increased.

FT5K-D - 5000 W FM Digital Transmitter equipped with Analog Audio, AES/EBU, MPX, I2S inputs. Which are converted to digital signals and modulated in an FPGA with excellent software algorithms to FM band with the extremely low noise level.

Direct to channel modulator provides very high signal quality, crystal clear audio and unbeatable performance.

Remote Control

The FT5K-D - 5000 W FM Digital Transmitter is shipping with its easy to use Cloud-enabled remote control system. The device can be managed and controlled via its web server and Onair Service Center. With the 3G/4G USB stick connection port, you have complete access to the device via Onair Service Center even in the rural areas which have a mobile phone signal.

Built-in RDS Encoder

The RDS encoder comes with a web protocol that is compatible with most of the radio automation software. This allows real-time broadcasting song/singer information automatically.

Silence Detector

FT5K-D - 5000 W FM Digital Transmitter’s silence detector, detects silence on the inputs according to the specified threshold level. It can either notify you and can trigger the audio backup feature.

Audio Backup

Supporting several types of Backup sources, upon audio loss, FT5K-D - 5000 W FM Digital Transmitter will switch between the sources (Analog Audio Input, AES/EBU, MPX, I2S, IP Audio Client, Integrated Audio Player) on the prearranged configurations (Silence time, silence level).

IP Audio

FT5K-D - 5000 W FM Digital Transmitter has an integrated audio processor that can decode Shoutcast, Icecast, HE-AAC v1/v2, MPEG-1 Layer 3 compressed audio streams, OGG compressed audio streams, and lossless uncompressed PCM streams, over IP networks. Even with behind NAT connections, 3G/4G connections and Firewalled connections, FT5K-D - 5000 W FM Digital Transmitter provides high sound quality without the need for user interference.

Integrated Audio Player

FT5K-D - 5000 W FM Digital Transmitter supports MP1, MP2, MP3, OGG, AAC, HE-AAC, MPEG-4 ALS, Ogg Vorbis, FLAC, Musepack, Speex, WAVE file formats. With the 8 Gb total storage capacity, you can store approximately 1000 hours of audio recordings.

E-Mail and SMS Notifications

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

N+1 Redundancy System

FT5K-D - 5000 W FM Digital Transmitter is ready for the N+1 Redundancy System. The backup device automatically goes online immediately, when the master goes offline.


Brand new transmitter design comes with industry-leading improvements!

  • LCD Touchscreen Control
  • Stainless steel very rugged case
  • Easy maintenance and service
  • Hot-swappable current sharing power supply units
  • Easy to change / clean air filter


With the improved touchscreen software, all information about transmitters running state can be seen in one screen. Configuration, and getting help is on the same screen.

RF part, DC part, and RF Filter can be accessed by separated covers. This allows for easy maintenance and service.

Hot-swappable power supply units are both making your transmitter run all the time and also simplifying service processes. Even with two power supply units failed, the remaining two power supplies are enough for the transmitter to run full power.

Most of the transmitter failures are from cooling system failures, which is caused by dust. Dust damages fans and blocks air circulation, but not with the brand new design. Easy to remove air filter helps, changing or cleaning it in a few minutes, and all these processes are happening while the transmitter is running.



Hot-Swap PSU

High redundancy by swappable PSU

No more interruption due to power supplies. You can change the power supply even while broadcasting.


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
  • Ready for SFN
  • RDS Alarm contact
  • Automatic start/stop for airconditioner
  • Ready for 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 the 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 the 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 finds the best working parameters to get maximum efficency when you change frequency or output power limit
  • A fresh start with reverting to the factory settings
  • Song and singer name broadcasting via RDS PSN (compatible with all radio automation software)
  • Cellular internet connection supported using 3G/4G USB stick

Comparison of FT and FT-D


MPX input


AES/EBU input


S/N ratio




Automatic audio source selection (Silence detector)

When the L&R audio source is cut off, MPX, AES/EBU, IP or Audio backup (internal SD card) can be selected automatically in FT5K-D. Audio backup (internal SD card) can be selected in FT5K when the L&R audio source is cut off.

Printer port

It is used to print out the event logs

N+1 Redundancy system

FT5K-D : Maximum 7+1 , FT5K : 1+1 only


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 the control system


It is used to stop the transmitter in case of an emergency like a fire inside the transmitter station

Room temperature protection


Humidity sensor


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