Radio Shack PRO-90 Benutzerhandbuch
62
SPECIFICATIONS
Frequency Coverage: ........ 29–54 MHz (in 5 kHz steps)
108–136.9875 MHz (in 12.5 kHz steps)
137–174 MHz (in 5 kHz steps)
406–512 MHz (in 12.5 kHz steps)
806.0000–823.9875 MHz (in 12.5 kHz steps)
849.0125–868.9875 MHz (in 12.5 kHz steps)
894.0125–956.0000 MHz (in 12.5 kHz steps)
849.0125–868.9875 MHz (in 12.5 kHz steps)
894.0125–956.0000 MHz (in 12.5 kHz steps)
Channels ................................................................. 300
Number of Banks ....................................................... 10
Sensitivity (AM/FM):
NFM: 20 dB S/N at 3 kHz deviation):
29–54 MHz ................................................... 0.5
µ
V
137–174 MHz ............................................... 0.4
µ
V
406–512 MHz ............................................... 0.4
µ
V
806–956 MHz ............................................... 0.6
µ
V
AM: 20 dB S/N at 60% modulation):
108–136.9875 MHz ...................................... 1.5
µ
V
Spurious Rejection (at 40.84 MHz) ...................... 50 dB
Selectivity:
10 kHz ........................................................... –6 dB
15 kHz ......................................................... –50 dB
15 kHz ......................................................... –50 dB
IF Rejection (at 162.4 MHz) ................................. 80 dB
Operating Temperature .. –4
°
to 140
°
F (–20
°
to
60
°
C)
Scan Speed:
Normal ................................. 100 Channels/Second
Service ........................... 100 Frequencies/Second
Service ........................... 100 Frequencies/Second
Search Speed:
Normal ....................................... 100 Steps/Second
Hypersearch .............................. 300 Steps/Second
Hypersearch .............................. 300 Steps/Second
Priority Sampling .......................................... 2 Seconds
Delay Time ................................................... 2 Seconds
IF Frequencies ... 380.7 MHz, 10.85 MHz, and 450 kHz
Antenna Impedance ........................................ 50 Ohms
Audio Output .................... 180 mW nominal into 8 Ohm
Internal speaker
38 mW nominal into 32 Ohm Stereo Headphones
9 mW nominal into 64 Ohm Earphone
Built-in Speaker Size .......................... 1
1
/
2
-inch (36 mm)
20-520.fm Page 62 Wednesday, August 4, 1999 3:06 PM