Radio Shack PRO-79 - Manual (Page 49)

49
SPECIFICATIONS
Frequency Coverage (MHz):
10 Meter Amateur Radio ..................... 29–30 (in 5 kHz steps)
VHF Lo ................................................ 30–50 (in 5 kHz steps)
6 Meter Amateur Radio ....................... 50–54 (in 5 kHz steps)
Aircraft ............................... 108–136.9875 (in 12.5 kHz steps)
Government ..................................... 137–144 (in 5 kHz steps)
2 Meter Amateur Radio ................... 144–148 (in 5 kHz steps)
VHF Hi ............................................. 148–174 (in 5 kHz steps)
Amateur Radio/Government ....... 380–450 (in 12.5 kHz steps)
UHF Standard ............................. 450–470 (in 12.5 kHz steps)
UHF “T” ....................................... 470–512 (in 12.5 kHz steps)
Channels of Operation ....... 200 channels/20 monitor memories
Sensitivity (20 dB S/N):
29–54 MHz ................................................................... 0.5
µ
V
108–136.9875 MHz ...................................................... 1.0
µ
V
137–174 MHz ............................................................... 0.5
µ
V
380–512 MHz ............................................................... 0.7
µ
V
Spurious Rejection (FM @154 MHz) ............................... 50 dB
Selectivity:
±
10 kHz ......................................................................... –6 dB
±
18 kHz ....................................................................... –50 dB
Search Speed ..............................................Up to 50 Steps/Sec
Scan Speed .......................................... Up to 25 Channels/Sec
Delay Time ................................................................ 2 Seconds
IF Frequencies:
1st IF ........................................................................ 10.7 MHz
2nd IF .......................................................................... 455 kHz
IF Interference Ratio (10.7 MHz) .................. 70 dB at 150 MHz
Squelch Sensitivity:
Threshold ...................................................... Less than 0.5
µ
V
Tight (FM) ...................................................... (S + N)/N 25 dB
Tight (AM) ...................................................... (S + N)/N 20 dB
Antenna Impedance ................................................... 50 Ohms
Audio Output Power (10% THD) .................... 180 mW Nominal
Built-In Speaker ........................... 1 3 / 8
Inches (36 mm), 8 Ohms
Operating Temperature ........................................... 14 ° to 140 ° F
(–10 ° to 60 ° C)
20-314.fm Page 49 Monday, December 13, 1999 12:55 PM