ALAN Electronics Tectalk FM PMR 446 Manual de usuario descargar pdf (Pagina 4)

2.2 ELECTRICAL SPECIFICATION

a) TRANSMITTER

1) Output power : Max. 0.5 W

2) Frequency Stability : +/- 5 ppm(-20°C to +55°C)

3) Modulation Method : FM

4) Oscillation Method : PLL SYNTHESIZER

5) Max. Frequency Deviation : < +/- 2.5 KHz (with tone)

6) Cooling Method : air-cooling Method

7) Spurious Emission TX: < -36dBm

8) FM Hum/Noise : > 40dB(1kHz 60% modulation)

9) Distortion : < 5% (1kHz 60% modulation)

10) Tx Audio Response : 6dB /OCT +/- 3dB preemphasis (300Hz to 2.5kHz)

b) RECEIVER

1) Receive Method : Double Super Heterodyne

2) Receive Sensitivity : -118dBm up (20dB SINAD W/CCITT)

3) Squelch Sensitivity : -120dBm to -130dBm (AUDIO On/Off Point)

4) Bandwidth : > 8.5KHz

5) Selectivity : > 55dB

6) Local Frequency Stability : +/-5ppm(-20°C to +55°C)

7) Spurious Response Rejection : > 65dB

8) Audio output : 200mW (8 Ohms load THD 10%)

9) Distortion : < 5% (1kHz 60% Modulation)

10) RX Audio Response : 6dB/OCT +1/-10dB deemphasis (300Hz -2.5kHz)

11) S/N Ratio : < 40dB(1kHz 60% Modulation)

12) IF : 1'st IF = 21.7MHz

2'nd IF = 450kHz

13) Local Frequency : 1’st Local Frequency = fc - 21.7MHz

2’nd Local Frequency = 21.25MHz

c) FM Broadcast Radio

1) Receive Method : Heterodyne

2) Receive Sensitivity : Min –90dBm(12dB SINAD)

3) Local Frequency : 1’st Local Frequency = fc – 75KHz

1 2 3 4 5 6 7 8 9 ... 15 16

Sin comentarios

ALAN Electronics Tectalk FM PMR 446 Manual de usuario Pagina 4