Vertex Standard VX-2000U, Service Manual

Page: 7 / 65

7
Specifications
General
Frequency Range (version): 400 ~ 430, 450 ~ 480 or 480 ~ 512 MHz (UHF vers. A/D/F, respectively)
No. of Channels & Spacing : 4 or 40 channels 25-kHz, 12.5-kHz spacing
Modes of Emission : 16K0F3E ,11K0F3E
Frequency Stability : ±0.00025%
Antenna Requirements : 50 ohms, unbalanced (SO-239 socket)
Voltage Requirements : 11.8 V to 15.6 V DC, negative ground
Current Consumption (approx.): 250 mA Stby, 200 mA Rx, 6.5 A Tx
Operating Temperature Range :
-
22 °F to
+
140 °F (
-
30 °C to
+
60 °C)
Size (WHD, approx.): 6¼
´
1½
´
4¼ inches (160
´
40
´
105 mm)
Weight (approx.): 1.9 lbs. (0.85 kg)
Receiver
Receiver Circuit Type : Double-Conversion Superheterodyne
Intermediate Frequencies : 43.95 MHz , and 450 kHz (all models)
Sensitivity : 0.2/0.25 µV for 12-dB SINAD
0.3/0.35 µV for 20 dB NQ
Hum & Noise Ratio : Better than 45 dB for 25-kHz/step,
Better than 40 dB for 12.5-kHz/step
Adjacent Channel Selectivity : >70 dB for 25-kHz/step,
>60 dB for 12.5-kHz/step
Intermodulation Distortion : Better than 65 dB
Spurious Rejection : Better than 65 dB
External Audio Output Power : 2 watts into 8 ohms with <10% THD
Transmitter
Power Output : 25/5 watts (high/low, programmable)
Modulation Type/Deviation : Frequency Modulation, ±5 kHz (±2.5 kHz )
Hum & Noise Ratio : Better than 45 dB for 25-kHz/step,
Better than 40 dB for 12.5-kHz/step
Modulation Distortion : Less than 5%
Spurious Emissions : Better than 65 dB (below carrier)
Microphone Impedance : 600 ohms
Specifications are subject to change without notice or obligation .