CTE Digital Broadcast 5kW FM TRANSMITTER
TX5HE Compact High-Efficiency range
General information The equipment is part of the Medium High Power VHF range of FM Radio air cooled Transmitters. The TX5-HE transmitter operates in Band II, adjustable from 3 up to 5kW output power with built-in exciter. The equipment is fully compliant with the personnel safety requirements as specified in EC 215. The transmitter is based on ultimate design and last generation RF devices to grant outstanding performances, high reliability and great simplicity both for operation and maintenance procedures.
Compact design technology: 5kW output power with built-in exciter in 19”, 4U rack only
Key Features (@ 5kW output) BROADBAND frequency synthesizer, without any other tuning or alignment. MONOPHONIC and STEREOPHONIC according to the CCIR rec. 450-2 standard. RDS and SCA subcarriers inputs HI-FI quality modulated signal, with low residual noise and distortion. AES-EBU digital interface (Option) RDS encoder (Option) RF Signal free from spurious and harmonic signals LD-MOS devices for wide band, reliability and high efficiency (73%). Redundancy: 6x1,2kW RF power amplifiers modules Redundancy: 3x2,5kW independent AC/DC Power Supplies (2,5kW with one PS failure; 1kW with two PS failures) Dual Drive, suitable for 1+1 and n+1 systems High Tolerance on mains voltage (±15 %) Mains Protection System by Surge Arrester System (option) Remote Operation compliant with IEC 864-1 (all options available) Control System with full micro-control adjustment, including trouble-shooting system Protection and Control System for: Excessive emission on spurious frequencies Reflected power Modulation limiter High Capacity Air cooling system fully integrated Ultra Compact design: 4U, 19”, 30Kg weigth
Technical Specifications GENERAL Frequency range ................................................. Class of emission ................................................ Stereo system ..................................................... Frequency deviation ............................................ Frequency control ................................................ Resolution ............................................................ Frequency stability .............................................. Output power ....................................................... Harmonic emission .............................................. Spurious emission ............................................... Residual AM noise level ...................................... Synchronous AM ............................................ RF output impedance ..........................................
87.5 - 108MHz F3E (Monophonic) ; F8E (Stereophonic) According to C.C.I.R. rec.450-2 ±75kHz nominal Built-in Frequency Synthesiser 10kHz step programmable ± 500Hz / 6 months 3, 4 or 5 kW (±0,5dB) 70dBc 90dBc 60dB 50dB 50 (7/8” EIA unflanged connector)
ENVIRONMENT Operating temperature ....................................... Relative humidity ........................................... Altitude ................................................................
0°C to +45°C (others on request) 20% to 90% non-condensing up to 2500m
PROGRAM INPUT Mono/Stereo ....................................................... Connector .......................................................... Impedance .......................................................... Level ................................................................... Preemphasis ....................................................... Audio frequency response ................................... 19 kHz suppression ............................................. RDS and AUX ...................................................... Connector ........................................................ Impedance ......................................................... Frequency range ........................................... Nominal input level ..............................................
L and R program input XLR type 600 balanced (others selectable) -4 to +12dBm 50 or 75s selectable 40 to 15000 ±0.3dB 50dB Subcarrier program input BNC 2k unbalanced 67 to 100kHz -10dBm (±7,5kHz deviation)
TRANSMISSION CHARACTERISTICS Mono operation ±75kHz deviation Total harmonic distortion ..................................... Intermodulation .................................................... Signal to noise unweighted .................................. Signal to noise weighted (CCIR 468-3) ................
0.1% 60dB 80dB 78dB
Stereo operation ±75 kHz deviation Total harmonic distortion ..................................... Intermodulation ....................................................
0.1% 60dB
Signal to noise unweighted .................................. Signal to noise weighted (CCIR 468-3) ................ Crosstalk L & R (40 to 15000 Hz) .......................... 38 kHz subcarrier suppression .................... Attenuation above 53 kHz ....................................
75dB 72dB 50dB 50dB 50dB
METERING Available on the front panel display: Forward power (FWD) Reflected power (REF) DC Supply voltage Frequency (active channel) Frequency (stored channels 1 to 6) Mono and stereo sensitivity (0,25dB step) Programmed output power MPX peak modulation L & R peak level RDS, SCA, Aux, MPX external modulation Programmed audio parameters (+L or -L, +R or -R, L on/off, R on/off, Pre-emphasis lin. 50, 75sec, Limiter on/off, Input Impedance Z=10k / 600) Alarm status Memory status Internal voltage Serial Number REMOTE CONTROL Parallel interface: WEB interface:
start, stop, standby, alarms, status, interlock, recall memory TCP/IP Telemetry (option)
GENERAL Voltage power supply: Frequency: Power consumption: Power factor: Cooling: Dimensions: Weight:
3x380Vac ±15% ; 3x220Vac ±15% (others on request) 50-60Hz ±5% 7,2kW (cooling system included) 0.9 forced air 483 x 674 x 177H (mm) 30 kg. (5kW version)
OPTIONS Digital audio Input: RDS:
AES-EBU facilities XLR balanced (S/PDIF) RDS basic encoder, programmable via PC