ONAIR, 8 KW FM Digital Transmitter

8000 W FM Digital Transmitter 

80000 W FM digital transmitter in a 19" Rack. Composed by FTC100-D exciter and FA8K 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

The FT8K-D FM digital transmitter is manufactured with state-of-the-art and high-efficiency LDMOS transistors which lower the operating, cooling and maintenance costs and are more durable.

The FT8K-D FM digital 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 the minimum noise level.

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

Remote Control

The FT8K-D FM digital transmitter comes with cloud-compatible remote control software with a 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 and activates the backup audio service if you wish.

Audio Backup

The FT8K-D FM digital transmitter has multiple redundant 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

FT8K-D FM digital 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 specified email addresses and phone numbers.

N+1 Redundancy System

The FT8K-D FM digital 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 transmitter operating 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 contact alert
• Automatic start/stop for airconditioner
• Ready for N+1 redundancy system
• Self Managing System
• Event records can be displayed on the screen or printed out with date&time of event
• All parameters can be viewed and controlled over TCP/IP or cloud.
• Reliable and durable thanks to microstrip technology
• Output power, reflection power, transistor temperature, Transistor current, and voltage protection
• Built-in silence detector, automatically switch to the built-in audio player or IP audio source (time and volume adjustable)
• Default audio input can be set between transmitter audio inputs, IP audio or internal audio player
• Event logs (e-mail, SMS or notification via OnAir service center)
• Remote control via internet, TCP/IP or 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 connection supported using 3G/4G USB stick

  Comparison of FT and FT-D

  Function	FT	FT-D	Description
  MPX input	✘	✓
  AES/EBU input	✘	✓
  S/N ratio	>50dB	>90dB
  Automatic audio source selection	✘	✓	When the L&R audio source is cut off, MPX, AES/EBU, IP or Audio backup (internal SD card) can be selected automatically in FT8K-D. Audio backup (internal SD card) can be selected in FT8K when the L&R audio source is cut off.
  Printer port	✘	✓	It is used to print out the event logs
  N+1 Redundancy system	✘	✓	FT8K-D : Maximum 7+1 , FT8K : 1+1 only
  GPIO	✘	✓	when temperature or humidity is high you can run air-condition automatically
  RS485	✘	✓	It is to communicate between Onair transmitters
  RS232	✘	✓	It is used to program the internal RDS via satellite or to get print out of events
  USB	✘	✓	It is used to update the software of the control system
  Interlock	✘	✓	It is used to stop the transmitter in case of an emergency like a fire inside the transmitter station
  Room temperature protection	✘	✓
  Humidity sensor	✘	✓