NT 250 Technical and Maintenance Manual NicomUsa Inc
Page 10
CHAPTER 2
ELECTRICAL SPECIFICATIONS
NT 250 TECHNICAL DATA
Power output: 2 to 270 Watts continuously variable
Frequency of operation: Sinthesized with TXCO crystal reference
RF output connector/ Impedance: Type "N" Female / 50 Ohms
Frequency Stability: Better than 5ppm (
±
500 Hz) , 0 to 50° C.
Frequency Range: 87.5 - 108 Mhz
Frequency programming: Digitally in 10 Khz increments.
Modulation type: Direct FM at the carrier frequency
S/N Ratio (ref. to 50 Khz / 1000 Hz): Mono > 70dB - Stereo > 65 dB.
Distortion, THD: < 0.1 %, Typ. 0.05 %
Asyncronous AM S/N ratio: 65 dB below reference carrier with 100% AM
modulation, 75 usec de-emphasis (no FM
modulation present).
Syncronous AM S/N ratio: 60 dB below reference carrier with 100% AM
modulation (FM modulation
±
75 Khz).
DC input power: 24 V VDC 8 A
AC input power: Single phase 100 - 240 V
Ambient Temperature Range: 0° to 50° C (+32° to +122° F)
Spurious and Harmonic or
Subharmonic Emissions: < -80 dB or better
Stereo Separation 55 dB @ 1 Khz
