MTI-800 Transmodulator QPSK (Free to Air) to COFDM

Digital transmodulation (xPSK → COFDM) with Transport Stream Processing. The QPSK or 8PSK channels located in the Sat-IF frequency band (950-2150 MHz) are transformed to COFDM channels located in the 47-862MHz band.

An MTI transmodulator carries out the complete channel processing from the input to the output:
  • tunes a xPSK digital channel of the 950-2150 MHz band, demodulates the signal being received,
  • processes the transport stream and
  • re-modulates it in COFDM format on an RF channel that is selectable within the 47-862 MHz frequency range.

Module programming involves the following selections and settings:
  • Central xPSK Input Frequency (1 MHz steps)
  • Input Symbol Rate (0.001 MS/s steps)
  • Central COFDM Output Frequency (1 kHz steps)
  • Output Channel Bandwidth (6, 7 or 8 MHz; also 5 MHz on DVB-H)
  • Output Operation Mode (2K or 8K; also 4K on DVB-H)
  • RF Output Level
  • FFT Window (Fast Fourier Transform), to reduce interference on adjacent channel
  • In-depth interleaving (only on DVB-H; with 2K and 4K modes)
  • Discretionary de-encrypting of one or more Services (only for MTI-900)
  • Optional Blockade of Services, PIDs and Conditional Accesses, with Regeneration of Tables
  • NIT Adaptation


Excellent for: upgrading existing MATV and IRS by adding extra digital channels from SAT into UHF band (to be received via Freeview receiver).

Signal type: Free-To-Air
Frequency band: 950-2150 MHz
Level: -65...-25 dBm
Symbol Rate: 2...45 MS/s (DVB-S), 10...30 (DVB-S2)

COFDM Transmodulation
Modulation: QPSK, 16QAM, 64QAM
Code rate: 1/2, 2/3, 3/4, 5/6, 7/8
Guard interval: 1/4, 1/8, 1/16, 1/32
MER: >38dB (typ.)
Transport Stream processing: Yes

Output: 1 x f type
Frequency band: 47-862 MHz
Bandwidth: 5, 6, 7, 8 MHz
Adjustable output level: 65 to 80dBuV

Voltage: +12V dc
Consumption: 600mA
Operating temperature: 0...+45 °C
Outside dimensions (w x h x d): 230 x 195 x 32 mm


Requires a wall mounting unit BASxxx and PSU CFP-700.


Full Specification (PDF)

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