Service manual

3VX-450 Series VHF Band Service Manual
General
Frequency range: 134-174 MHz
Channel / Group: 512 CH / 32 Groups (VX-459, VX-454)
32 CH / 2 Group (VX-451)
Power Supply Voltage: 7.4 V DC ± 10 %
Current Consumption: 1.7 A (5 W TX)
Channel Spacing: 12.5 / 20 / 25 kHz
PLL Steps: 12.5 / 2.5 / 5 / 6.25 kHz
Battery Life (5-5-90 duty):
2400 mAh FNB-V113LI 18.5 hours (w/saver) / 16 hours
1170 mAh FNB-V112LI 9.5 hours (w/saver) / 8.6 hours
IP Rating: IP57
Operating Temperature Range: –20 °C to +55 °C
Charging Temperature Range: +5 °C to +35 °C
Frequency Stability: ±2.5 ppm
RF Input-Output: 50 Ohms
Dimension (H x W x D): 4.29 x 2.3 x 1.34 inches (109 x 58.5 x 34 mm) (w/FNB-V112LI)
4.29 x 2.3 x 1.69 inches (109 x 58.5 x 43 mm) (w/FNB-V113LI)
Weight (Approx.): 10.44 oz (296 g) (w/FNB-V112LI, Antenna, Belt Clip)
11.99 oz (340 g) (w/FNB-V113LI, Antenna, Belt Clip)
Receiver (Measurement per EN300 086)
Circuit Type: Double Conversion Super-heterodyne
Sensitivity (20 dB SINAD): –4 dBμV / –2 dBμV (W/N)
Adjacent Channel Selectivity: 70/65 dB (W/N)
Hum and Noise: 45/40 dB (W/N)
Intermodulation: 70/65 dB (W/N)
Spurious Image Rejection: 70 dB
Audio output: 700 mW (intemal @ 16 Ohms 5% THD)
500 mW (extemal @ 4 Ohms 5% THD)
Transmitter (Measurement per EN300 086)
Output Power: 5 / 2.5 / 1 / 0.25 W
Modulation: 16K0F3E/11K0F3E)
Maximum Deviation: ±5.0 kHz / ±2.5 kHz
Spurious Emissions: –36 dBm (< 1 GHz), –30 dBm (> 1 GHz)
FM Hum & Noise: 45 dB / 40 dB
Audio Distortion: < 3% @ 1kHz
Specifications subject to change without notice or obligation.
Specifications (EU)