2-2
VX-4000 UHF Service Manual
Specifications
G
ENERAL
Number of Channels
:
250 channels
Frequency Range
:
400 - 430 MHz (A), 450 - 480 MHz (D), 480 - 512 MHz (F)
Channel Spacing
:
12.5 / 25 / 30 kHz
Power Supply Voltage
:
13.8 VDC
Current Consumption
:
Standby: 400 mA
Receive:
2.1 A
Transmit: 12 A
Ambient Temperature Range
:
–30°C to +60°C (–22°F to +140°F)
Frequency Stability
:
±2.5 ppm
RF Input-Output Impedance
:
50 Ohms
Audio Output Impedance
:
4 Ohms
Dimensions
:
7" (w) x 2.4" (H)x 7.7" (D) (178 x 60 x 195 mm)
Weight
:
4.9 lbs. (2.2 kg)
R
ECEIVER
(Measurements made per EIA standard TIA/EIA-603)
Circuit Type
:
Double-conversion Super-heterodyne
Sensitivity(EIA 12 dB SINAD)
: 0.25 µV
Adjacent Channel Selectivity
:
80 dB / 70 dB
Intermodulation
:
76 dB
Spurious and Image Rejection
:
90 dB
Audio Response
:
+3 / –8 dB from the 6 dB / oct. re-emphasis curve
Audio Output
:
5 W @ 4 Ohms, 10 % THD
10 W @ 4 Ohms w/<10 % THD (Option)
T
RANSMITTER
(Measurements made per EIA standard TIA/EIA-603)
Power Output
:
40 / 25 W
Modulation
:
16K0F3E, 11K0F3E
Max Deviation
:
5.0 / 2.5 kHz
Conducted Spurious Emissions
: 70 dB Below Carrier
FM Hum & Noise
:
45 dB (25 kHz) / 40 dB (12.5 kHz)
Audio Response
:
+1 / –3 dB from the 6 dB / oct-8
Audio Distortion
(@ 1 kHz):
< 3 %
Measurements per EIA standards unless noted above.
Specifications subject to change without notice or obligation.