Bext XT 50 50 W FM Stand Alone Transmitters / Exciter

The XT50 is a rugged, ultra-compact and energy efficient solid state FM Transmitter.

Features:
– Analog FM transmitter
– Standard 19” chassis and only 1 RU
– Single phase AC
– Built-in high-quality stereo generator
– Modular design for easy maintenance
– Withstands extreme operating conditions
– Strong rack mounting ears
– Integrated FSK ID for translators
– User friendly front panel LCD menu
– 2 year warranty

Specifications:
Nominal RF Output Power: 50 W
RF Output: N connector female
Power Amplifier: 1
PA power supply: 1
Frequency range: 87.5-108 MHz, front panel in 10 kHz steps
Start-up time: Typically 5 to 10 seconds
Type of modulation: Direct carrier frequency modulation
Frequency deviation: Nominal ±75 kHz
Automatic foldback protection
Integrated exciter, may be used in modular system
RF Harmonics: Exceeds FCC requirements
RF Spurious: Exceeds FCC requirements
Audio Inputs
2 x BNC Connectors supports composite, MPX
Analog L&R and mono via XLR inputs

Audio General Specs:
Preemphasis: selectable Flat / 50 / 75 micros.
Preemphasis Precision: better than ± 0.5 dB
Wideband Amplitude Response: ± 0.2 dB 30Hz to 53KHz; ± 0.2 dB 53KHz to 100 KHz
Wideband AM Asynchronous: (FM = no modulation, Ref. = 100 % AM, Unweighted, RMS detector, BW 30-200 kHz) less than -68dB, typ. -80dB
Wideband Distortion, THD: Less than 0.1% (typ. 0.05%)
WB Distortion, IMD: Less than 0.1% (typ. 0.05%)
WB Transient IMD: Less than 0.25% (square/sine wave)

Composite and Mono Specs:
S/N: Typical Values referred to ± 75kHz: Weighted (CCIR 468/2 – Peak CCIR detector) – 75 dB / 50s – 69 dB / flat; Weighted (CCIR 468/2 – RMS detector) – 79 dB / 50s -72dB / flat; Unweighted (RMS detector, meas. 20Hz- 23kHz) – 86 dB / 50s – 80 dB / flat (stereo); Unweighted (RMS detector, meas. 20Hz- 23kHz) – 92 dB / 50s – 88 dB / flat (mono)
IMD: 70 Hz / 6 kHz 4:1 RATIO less than 0.03% measured with 1 kHz and 1.3 kHz tones, 1:1 ratio @ 75 kHz deviation
Transient IM: 0.03 % (square/sine)
Audio response: 0.15 dB 20 Hz to 15 kHz
AM Synchronous: (AM = 400 Hz, FM = 400 Hz 75 kHz Ref. = 100 % AM , RMS detector, meas. 20Hz-23kHz ) less than -69 dB
AM Asynchronous: FM = no modulation, Ref. = 100 % AM, Unweighted, RMS detector, meas. 20Hz-23kHz ) < -70dB (typ. -85dB)
Common mode rejection: Greater than 45 dB typical, 25 Hz to 15kHz

Built-in Stereo Generator Specs:
Stereo System: EBU/CCIR/FCC standard ‘Pilot Tone System’
Pilot Tone Frequency: 19 kHz 1 Hz Pilot Tone Deviation: 7 kHz nominal
38 kHz Suppression: Greater than 70 dB (typ. 85 dB)
38 kHz Tone Generation: Internal Crystal 38 kHz
Tone Precision: 38 kHz 2 Hz
Phase response: 19/38 kHz 02 internally adjustable
Stereo Separation: 30-80Hz greater than 53dB, 80Hz- 15kHz greater than 60 dB
Crosstalk attn. (M / S): Greater than 40 dB, 40 Hz to 15 kHz (typ. 55dB, 100Hz to 8kHz)
Audio Spurious Products: Greater than 53 kHz less than 50 dB
THD on L & R channels: Less than 0.03%, 30Hz-15 kHz
Audio Filter Attenuation: Greater than 55 dB @ 19 kHz; greater than 45dB 19 to 50 kHz; greater than 50dB to 100kHz (typ.)

AC Power:
– 80 to 240 V
– Single Phase 50 to 60 Hz
– 100 W Consumption @ 50 W operation

IP Connectivity:
– Optional Web Advance User Interface (AUI): Manage and monitor the XT 50 via the internet with a computer, cell phone or tablet
– Front Panel LCD Menu
– Forward Power Reading
– Reflected Power Reading
– Preemphasis status and selection
– Temperature reading
– Frequency reading and selection in 10 kHz steps
– Audio input selection
– Modulation level reading
– Power Amplifier menu
– Efficiency Reading
– Status of FSK ID ON/OFF

Additional Connectors:
1 BNC connector: 19 kHz Output:
1 BNC: Baseband / Composite / MPX Output
DB15: For Analog Telemetry & Remote Control
RJ 45s: For Optional LAN / WEB connection
DB9: For interconnection with other units

Environmental:
Storage temperature: -4° to 140° Fahrenheit
Operating temperature: 14° to 114° Fahrenheit
Relative humidity: 95% non-condensing
Max operating altitude: 6,550 Ft.
Cooling: Forced air with easily replaceable fans

Physical:
Front panel: 19″ x 1.75”
Cabinet depth from front panel: approximately 15.5”
Weight: 12 lbs