PRO-57 Scanner
(200-0126)                 Specifications             Faxback Doc. # 19708

Programmable Scanner

FREQUENCY COVERAGE:
VHF-Lo............................................30-50 MHz (in 5kHz steps)
Ham...............................................50-54 MHz (in 5kHz steps)
Government......................................138-144 MHz (in 5kHz steps)
Ham.............................................144-148 MHz (in 5kHz steps)
VHF-Hi..........................................148-174 MHz (in 5kHz steps)
Ham/Government...............................380-450 MHz (in 12.5kHz steps)
UHF-Lo.......................................450-470 MHz (in 12.5kHz steps)
UHF-Hi.......................................470-512 MHz (in 12.5kHz steps)

CHANNELS OF OPERATION:......................................Any 10 channels

SENSITIVITY:

    20 dB Signal-to-Noise ratio at 3 kHz Deviation:
    30 - 54 mHz..................................................1.0 microV
   138 -174 MHz..................................................1.0 microV
   380 -512 MHz..................................................1.0 microV

SPURIOUS REJECTION:

 30- 54 MHz..................................................50 dB at 40MHz
138-174 MHz.................................................50 dB at 120MHz
380-512 MHz...................................................Not specified

SELECTIVITY:

 ñ10 kHz..............................................................-6 dB
 ñ20 kHz.............................................................-50 dB

IF REJECTION:

10.7 MHz...................................................50 dB at 154 MHz
SCANNING RATE............................................... 8 Channels/sec
DELAY TIME........................................................2 seconds
MODULATION ACCEPTANCE.....................................plus/minus 8  kHz
IF FREQUENCIES.........................................10.7 MHz and 455 kHz
FILTERS....................................................1 crystal filter
...........................................................1 ceramic filter
SQUELCH SENSITIVITY.........................Threshold: Less than 1.0 microV
.......................................................Tight: (S+N)/N 25 dB
ANTENNA IMPEDANCE...................................................50 ohms
AUDIO POWER...............................................1.0 watts maximum

POWER REQUIREMENTS:..............................AC 120 Volts 60 Hz 8 watts
DIMENSIONS....................2"(52 mm) x 7 7/8" (200 mm) x 7" (175 mm) HWD
WEIGHT........................................................24 oz. (650g)

Specifications are typical; individual units might vary.  Specifications
are subject to change without notice.


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