
2-2
VX-4000 VHF Low-band Service Manual
Specifications
G
ENERAL
Number of Channels
:
250 channels
Frequency Range
:
29.7 - 37.0 MHz (A), 37.0 - 50 MHz (B)
Channel Spacing
:
5 / 10 / 12.5 / 15 / 20 / 25 / 50 kHz
Power Supply Voltage
:
13.8 VDC
Current Consumption
:
Standby: 400 mA
Receive:
2.5 A
Transmit: 12 A
Ambient Temperature Range
:
–30°C to +60°C (–22°F to +140°F)
Frequency Stability
:
±5.0 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
:
85 dB
Intermodulation
:
75 dB
Spurious and Image Rejection
:
85 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
:
70 / 30 W
Modulation
:
16K0F3E, 11K0F3E
Max Deviation
:
5.0 kHz
Conducted Spurious Emissions
: 70 dB Below Carrier
FM Hum & Noise
:
45 dB (25 kHz)
Audio Response
:
+1 / –3 dB from the 6 dB / oct-8
Audio Distortion
(@ 1 kHz):
< 5 %
Measurements per EIA standards unless noted above.
Specifications subject to change without notice or obligation.
Содержание VX-4000L
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