Radio Shack PRO-89 - Specifications; Frequency Coverage and Channel Capacity; Performance Metrics and Technical Details

Specifications
67
SPECIFICATIONS
Frequency Coverage (MHz):
10 Meter Amateur Radio ............................ 29–29.7 (in 5 kHz steps)
VHF Lo ....................................................... 29.7–50 (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)
UHF Hi ........................................ 806–823.9875 (in 12.5 kHz steps)
849–868.9875 (in 12.5 kHz steps)
894–960 (in 12.5 kHz steps)
Channels of Operation .............. 200 channels/20 monitor memories
Sensitivity (20 dB S/N):
29–54 MHz ...............................................................................0.3 µV
108–136.9875 MHz ................................................................. 1.0 µV
137–174 MHz .......................................................................... 0.5 µV
380–512 MHz .......................................................................... 0.5 µV
806-960 MHz ........................................................................... 0.5 µV
Spurious Rejection (FM @154 MHz) ....................................... 40 dB
Selectivity:
–6 dB .................................................................................... ±10 kHz
–50 dB................................................................................... ±18 kHz
Search Speed .................................................... Up to 50 Steps/Sec
Scan Speed .................................................. Up to 25 Channels/Sec
Delay Time ....................................................................... 2 Seconds
IF Frequencies:
1st IF ................................................................................ 257.5 MHz
2nd IF ................................................................................. 21.4 MHz
3rd IF .................................................................................... 455 kHz
IF Rejection (257.5 MHz) ..................................... 60 dB at 154 MHz
Priority Sampling .............................................................. 2 Seconds
Squelch Sensitivity:
Threshold ................................................................................ 0.3 µV
Tight (FM) .................................................................(S + N)/N=30 dB
Tight (AM) ............................................................... (S + N)/N=20 dB
Antenna Impedance .............................................................50 Ohms