Radio Shack PRO-28 owner manual Specifications

20-508.fm Page 39 Wednesday, August 4, 1999 1:50 PM

SPECIFICATIONS

Frequency Coverage:

29–54 MHz (in 5 kHz steps) 137–174 MHz (in 5 kHz steps)

406–512 MHz (in 12.5 kHz steps) Channels of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 channels Sensitivity:

(FM: 20 dB S/N at 3 kHz deviation):

29–54 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4 μV 137–174 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 μV 406–512 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 μV

Selectivity:

±10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –6 db ±17 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 db

Scan Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Channels/Sec. Search Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Steps/Sec. Delay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Seconds Acceptable RF Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6 kHz IF Frequencies . . . . . . . . . . . . . . . . . . . . . . . . 10.85 MHz and 450 kHz Squelch Sensitivity: Threshold . . . . . . . . . . . . . . . . . . Less than 0.4 mV Tight (S+N)/N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 dB Built-in Speaker . . . . 19/16 inches (4 cm) 8 Ohm, 0.5 W, Dynamic Type Power Requirement . . . . . . . . . . . . . . DC 4 AA Batteries (6.0 VDC), or

4 AA Rechargeable Ni-Cd Batteries (4.8 VDC), or Vehicle Battery DC Adapter (Cat. No. 270-1533), or AC Adapter (Cat. No. 273-1652)

Current Drain:

Squelched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 mA

Full Volume Unsquelched . . . . . . . . . . . . . . . . . . . . . . . . . 125 mA

Dimensions (HWD) . . . . . . . . . . . . . . . . . . . . 63/8 × 211/16 × 19/16 Inches

(162 × 68.5 × 39 mm)

Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.8 oz (250 g)

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

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