The image of this layout is purely demonstrative and may change without notice. The configuration is only referred to installed equipment; rack, cover panels and all others accessories are to be defined at order.


Features
> Tunable over entire FM band (87.5 – 108 MHZ), without tuning.
> Overall efficiency better than 70%.
> Hot-pluggable and broadband power amplifier modules.
> Each module features switching mode power supply to control and stabilize power supply voltage.
> Each amplifier module provides Automatic Power Control.
> Suitable for mono & stereo broadcast operations.
> Protection against high VSWR, overdrive, overcurrent and overtemperature.
> Compliance to IEC safety standards.
> Compliance to ETSI – CCIR – FCC standards.
> Entire transmitter can be switched off through an emergency button.
> High redundancy guaranteed by 10 power modules of 2.2 kW RF power.
> All measurement and working parameters are displayed on front panel.
> Remotely controllable by telemetry system.
> Design for 24/7 non-stop operation.
> The transmitter include an integrated system for automatic and manual switching between two exciters. In Automatic mode the changeover is activated when active power of exciter falls below 3dB.

TX20KSS/61D412
Parameter	Value
GENERALS
RF Output Power	21 kW
Frequency Range	87,5 – 108 MHz
Frequency Stability	± 1 ppm
Driver power for rated output	20 - 25 W
Nominal Frequency Deviation	±75 KHz (peak)
Maximum Frequency Deviation	±150 KHz (peak)
Class of Emission	180KF8E Direct to Channel
Modulation Mode	Mono, Stereo, Multiplex
Stereo transmissions	Ace to ITU-R / Ree  450 (Pilot  tone)
RF Output Impedance	50 Ω
RF Output Connector	3-1/8” EIA Flange
VSWR	1.4:1 with automatic fold-back at higher VSWR
Pre-emphasis Mode	0/50 (CCIR) µs,75 (FCC) μs
Asynchronous AM S/N Ratio	Typically >70dB
Synchronous AM S/N Ratio	Typically > 55dB
Harmonics suppression and Spurious	Typically <85db
Overall efficiency	Typically > 70%
RF Harmonics	Exceeds ETSI/CCIR/FCC requirements
RF Spurious	Exceeds ETSI/CCIR/FCC requirements
Analogue Input level {+75 Khz (peak) deviation }	-12,5 dBu - +12,5 dBu (adjustable)
Digital Input level {+75 Khz (peak) deviation }	-20,0 dBFS – 0 dBFS (adjustable)
MONO OPERATION
S/N ratio	Typically > 83dB
Total Harmonic Distortion + Noise	Typically <0,03%
Inter Modulation Distortion SMPTE	Typically <0,02%
Frequency Response	Typically ±0,2dB
Audio Input Impedance	600 Ω or 10 kΩ
MPX OPERATION
Composite S/N ratio	Typically > 80dB
Total Harmonic Distortion + Noise	Typically <0,05%
Inter Modulation Distortion	Typically <0,05%
Frequency Response	Typically ±0,2dB
Audio Input Impedance	10 kΩ
STEREO OPERATION
Stereo FM S/N Ratio	Typically > 83dB
Total Harmonic Distortion + Noise (L or R)	Typically <0,02%
Inter Modulation Distortion SMPTE  (L or R)	Typically <0,02%
Frequency  response (L or R)	Typically ±0,2dB
Linear Cross Talk	Typically > 50dB
Non-linear Cross Talk	Typically > 50dB
Stereo Separation (Sine Wave)	Typically > 70dB
Audio Input Impedance	600 Ω or 10 kΩ
Digital Input Impedance	110 Ω