WISCO International (Vertex - VX-520U Specifications)

General	VX-520U
Number of Channels	32 Channels
Frequency Range	450-488 MHz (D)
Channel Spacing	12.5 / 25 KHz
Power Supply Voltage	7.2 VDC
Current Consumption Standby (Saver On) Standby (Saver Off) Receive Transmit	19 mA 50 mA 200 mA 2.0/1.0 A
Battery Life	11 hrs. (13.3 hrs. w/saver)
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	16 Ohms
Dimensions	2.3"(W) x 5.9"(H) x 1.5" (D) (59 x 149 x 39 mm) w/FNB-29A 2.3"(W) x 6.7"(H) x 1.5" (D) (59 x 171 x 39 mm) w/FNB-29AL
Weight	1.21 lbs (547 g) w/o ANT w/FNB-29A 1.24 lbs (564 g) w/o ANT w/FNB-29AL
Receiver	Measurements made per EIA standard TIA / EIA-603
Circuit Type	Double Conversion Super-heterodyne
Sensitivity EIA 12 dB SINAD 20 dB Quieting	0.25 µV 0.35 µV
Adjacent Channel Selectivity (25 KHz /12.5 KHz channel spacing)	75 dB / 65 dB
Intermodulation	72 dB
Spurious and Image Rejection	75 dB
Conducted Spurious Emissions	-57 dBm
Hum and Noise	40 dB / 45 dB
Audio Output	0.5 W @ 16 ohms, 5% THD
Transmitter	Measurement made per EIA standard TIA / EIA-603
Power Output	5.0 / 1.0 W
Modulation	16K0F3E,11K0F3E
Conducted Spurious Emissions	60 dB Below Carrier
FM Hum and Noise	45 dB / 50 dB
Audio Distortion (@1 kHz)	< 2.5%

MIL-STD 810C, Method 501.1, Procedure 1, High Temperature (storage)
MIL-STD 810C, Method 501.1, Procedure 2, High Temperature (operational)
MIL-STD 810C, Method 502.1, Procedure 1, Low Temperature
MIL-STD 810C, Method 503.1, Procedure 1, Temperature Shock
MIL-STD 810C, Method 505.1, Procedure 1, Solar Radiation (Steady)
MIL-STD 810C, Method 507.1, Procedure 2, Humidity
MIL-STD 810C, Method 514.2, Procedure 8, Vibration
MIL-STD 810C, Method 514.2, Procedure 10, Vibration
MIL-STD 810C, Method 516.2, Procedure 1, Shock (basic design)
MIL-STD 810C, Method 516.2, Procedure 5, Shock (bench handling)
MIL-STD 810D/E, Method 500.2/3, Procedure 1, Low Pressure (storage)
MIL-STD 810D/E, Method 500.2/3, Procedure 2, Low Pressure (Operational)
MIL-STD 810D/E, Method 501.2/3, Procedure 1, High Temperature (storage)
MIL-STD 810D/E, Method 501.2/3, Procedure 1, High Temperature (operational)

MIL-STD 810D/E, Method 502.2/3, Procedure 1, Low Temperature (storage)
MIL-STD 810D/E, Method 502.2/3, Procedure 2, Low Temperature (operational)
MIL-STD 810D/E, Method 503.2/3, Procedure 1, Temperature Shock
MIL-STD 810D/E, Method 505.2/3, Procedure 1, Solar Radiation (cycling)
MIL-STD 810D/E, Method 506.2/3, Procedure 1, Rain (Blowing)
MIL-STD 810D/E, Method 506.2/3, Procedure 2, Rain (drip)
MIL-STD 810D/E, Method 507.2/3, Procedure 2, Humidity (induced)
MIL-STD 810D/E, Method 509.2/3, Procedure 1, Salt Fog
MIL-STD 810D/E, Method 510.2/3, Procedure 1, Dust (blowing dust)
MIL-STD 810D/E, Method 514.3/4, Procedure 1, Category 10, Vibration (minimum integrity)
MIL-STD 810D/E, Method 516.3/4, Procedure 1, Shock (functional shock)
MIL-STD 810D/E, Method 516.3/4, Procedure 4, Shock (transit drop)
MIL-STD 810D/E, Method 500.2/3, Procedure 6, Shock (bench handling)