X.DA-20

The X.DA-20 is a 20 kW solid-state AM transmitter for broadcasters requiring large-area regional or national coverage. Housed in dual standard 19-inch rack cabinets, its modular architecture groups independent 1 kW power stages that can each be replaced individually when a fault occurs, without specialist tools. DDS carrier generation ensures precise frequency stability, while built-in Ethernet remote control allows full station management from anywhere on the network. Comprehensive digital protections — VSWR, overcurrent, overtemperature, and overvoltage — continuously safeguard the equipment. HD Radio® and DRM compatible.

Technical Specifications

Carrier power	20 kW
Power reduction	4 pre-set adjustable levels
Frequency range	535–1705 kHz
Frequency stability	± 5 Hz
Load impedance	50 Ω (VSWR ≤ 1.6:1)
Audio input	+10 dBm at 100% modulation / 600 Ω balanced
Frequency response	± 1 dB, 20–15,000 Hz
Harmonic distortion (THD)	< 1% at 95% modulation
Intermodulation distortion	< 2% (60 Hz – 7 kHz, 2:1)
Carrier shift	< 1%
Signal-to-noise ratio	≥ 62 dB
Spurious radiation	≤ −80 dB
Modulation capacity	> 130% positive peak
Efficiency	85% under normal operating conditions
Power factor	0.95 ind
Output connector	EIA 1-5/8"

Power Supply

Voltage / Phases	Max. current	Consumption
220/110 V 3φ	90 A	40 kVA
380/220 V 3φ	55 A	40 kVA

(*) At 100% modulation, 50–60 Hz. Tolerance ±5 %, ±10 %.

Physical & Environmental

Dimensions (W × H × D)	1100 × 1840 × 872 mm
Net weight	954 kg
Operating temperature	0°C – 50°C
Relative humidity	0 – 95%
Operating altitude	up to 3,500 m a.s.l.

Other X.DA Series Models

X.DA-3 3 kW X.DA-5 5 kW X.DA-10 10 kW X.DA-15 15 kW X.DA-25 25 kW X.DA-30 30 kW X.DA-50 50 kW