T234 20 kW,
T244 25 kW &
T254 30 kW
FM Transmitter General Characteristics


Power supply voltage
    to be specified on the order
415 Vac 3% 3ph+N or
380 Vac 3% 3ph+N or
220 Vac 3% 3ph
Operating temperature range-10 to +45°C
Storage temperature range-30 to +70°C
Relative humidity0 to 90%
Altitude (higher altitudes available)up to 6500 ft
Power consumption (typical)50 kVA -T254
43 kVA - T244
35 kVA - T234
Power factor 0.95

RF characteristics

Frequency range (up to 10 programmable frequencies locally or remotely selectable in 1 kHz steps)87.5 to 108 MHz
Output power30 kW - T254
25 kW - T244
20 kW - T234
Type of emissionF3E
FM carrier deviation75 kHz
Frequency stability1 ppm/year
Frequency drift (after 30 min.)200 Hz
Output impedance50 W
Output flange
(others on request)
3 1/8" EIA (standard)
1 5/8" EIA
VSWR without performance degradation1.5
Harmonic emission 1 mW
Spurious emission in band-90 dBc
Residual AM noise level-60 dB
Synchronous AM noise level-50 dB

Mono Input

Nominal input level-4 to +12 dBm/600 W
Input impedance600 W or 5 kW balanced internally selectable
Pre-emphasis
(according to the standard)
75 ms 0.8 ms disconnected or
50 ms 0.5 ms disconnected
Amplitude vs. frequency response40 Hz to 15 kHz 0.2 dB
Total harmonic distortion with pre-emphasis and de-emphasis on0.1% (typical 0.07%) at 75 kHz deviation
0.2% (typical 0.15%) at 100 kHz deviation
Signal to noise ratio
(400 Hz modulation at 75 kHz deviation)
80 dB unweighted (typical)
77 dB weighted (typical)
Attenuation at 19 kHz50 dB

MPX Input

Nominal input level-4 to +12 dBm/600 W
Input impedance (internally selectable)600 W or 5 kW balanced
Amplitude vs.frequency response40 Hz to 53 kHz 0.1 dB
53 kHz to 100 kHz 0.3 dB
Total harmonic distortion with pre-emphasis and de-emphasis on0.1% (typical 0.07%) at 75 kHz deviation
0.2% (typical 0.15%) at 100 kHz deviation

Stereo Input (with internal stereo encoder)

Nominal input level-4 to +12dBm / 600 W
Input impedance (internally selectable)600 W or 5 kW balanced
Pre-emphasis (according to the standard)75 ms 0.8 ms disconnected or
50 ms 0.5 ms disconnected
Amplitude vs.frequency response40 Hz to 15 kHz 0.2 dB
Total harmonic distortion with pre-emphasis and de-emphasis on0.1% (typical 0.07%) at 75 kHz deviation
0.2% (typical 0.15%) at 100 kHz deviation
Signal to noise ratio (400 Hz modulation at 75 kHz deviation)73 dB unweighted (75 dB typical)
68 dB weighted (70 dB typical)
Crosstalk between channels (75 kHz deviation)40 Hz to 15 kHz >50 dB (guaranteed)
40 Hz to 15 kHz >55 dB (typical)
100 Hz to 5 kHz >55 dB (guaranteed)
100 Hz to 5 kHz >60 dB (typical)
Attenuation at 19 kHz50 dB
Attenuation above 53 kHz52 dB

SCA Input

Nominal input level-10 dBm
Input impedance5 kW unbalanced
Operating frequency67 kHz

RDS Input

Nominal input level-10 dBm
Input impedance5 kW unbalanced
Operating frequency57 kHz
Pilot output19 kHz, squarewave, 1 Vpp

These are general specifications and typical values. They are subject to change without notice and will be altered to meet individual customer requirements.

ReturnReturn to T234/T244/T254 Main Page This is introductory information. Our company reserves the following right: because of the delay occurring between the issue of this information and the completion of our products after testing, it is possible that a product does not comply with the features stated herein. Therefore this information is neither a contract nor an offer, but only an invitation to contact us.
Return to Homepage