Vertex Standard VXA-710 SPIRIT, Service Manual

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2
Specifications
General
Frequency Range : TX 118.000 - 136.975 MHz (COM Band)
RX 88.000 - 108.000MHz (FM BC Band),
108.000 - 117.975 MHz (NAV Band),
118.000 - 136.975 MHz (COM Band),
151.5125 - 158.400MHz (BRS Memory Channels),
Weather Channel (WX-01 - WX-10)
Channel Spacing : 25 kHz (AIR Band),
5/10/12.5/15/20/25/50/100 kHz (FM BC Band)
Emission Type : TX: AM,
RX: AM & FM
Supply Voltage : 4.5 - 15.0 VDC
Current Consumption (approx.): 250 µA (Power off), 35 mA (Battery saver on, save ratio 1:5),
60 mA (Squelch on), 180 mA (Receive),
800 mA (Transmit AM: 1.5W Carrier @ 7.4V),
400 mA (Transmit AM: 0.3W Carrier @ 4.5V)
Temperature Range : –22 °F to +140 °F (–30 °C to +60 °C)
Case Size (WxHxD): 2.36” x 3.78” x 1.12” (60 x 96 x 28.5 mm) w/FNB-80LI
Weight (approx.): 9.9 oz. (280 grams) with FNB-80LI, antenna
Receiver
Circuit Type : Double-conversion Superheterodyne
IFs : 35.4 MHz & 450 kHz ( AM / NFM ),
45.65 MHz & 10.7MHz ( WFM )
Sensitivity : 88-108 MHz: better than 2 µV (for 12 dB SINAD with 1 kHz tone @ 22.5 kHz deviation)
108 MHz-137 MHz: better than 1 µV (for 6 dB S/N with 1 kHz tone @ 30 % modulation)
BRS-01 - BRS-21: better than 0.32 µV (for 12 dB S/N with 1 kHz tone @ 3.5 kHz deviation)
WX-01 - WX-10: better than 0.4 µV (for 12 dB S/N with 1 kHz tone @ 3.5 kHz deviation)
Selectivity : AM/FM: more than 8 kHz/–6 dB,
WFM: more than 200 kHz/–6 dB
Adjacent Ch. Selectivity : AM/FM: less than 25 kHz/–60 dB,
WFM: less than 300 kHz/–20 dB
AF Output : 0.2 W @ 8 Ohms, 10 % THD @ 7.4V
0.4 W @ 8 Ohms, 10 % THD @ 13.8V
Transmitter
Power Output : 118 MHz-137 MHz: AM: 5.0 W (PEP), 1.5 W (Carrier Power) @ 7.4 V
Frequency Stability : Better than ±2.5 ppm (–22 °F to 140 °F/–30 °C to +60 °C)
Modulation System : AM: Low Level Modulation
Spurious Emission : Better than 60 dB below carrier
Int. Microphone Type : Condenser
Ext. Mic. Impedance : 150 Ohms
Specification are subject to change without notice.