Radio Shack PRO-99 - Manual (Page 72)

72
SPECIFICATIONS
Frequency Coverage (MHz):
Frequency Range (MHz) ..........Programming/Search Step Value
28-54 ...................................................................................5 kHz
108-136.9875 .................................................................12.5 kHz
137-174 ............................................................5, 6.25 or 7.5 kHz
406-512 ..........................................................................6.25 kHz
806-823.9875 .................................................................6.25 kHz
849-868.9875 .................................................................6.25 kHz
894-960 ..........................................................................6.25 kHz
Channels of Operation ........................ ...................500 channels
Sensitivity ................................................................. (20 dB S/N):
28-54 MHz .........................................................................0.3 µ V
108-136.9875 MHz............................................................ 1.0 µ V
137-174 MHz .....................................................................0.5 µ V
406-512 MHz .....................................................................0.5 µ V
806-960 MHz .....................................................................0.5 µ V
Spurious Refection (FM @ 154.6 MHz)...............................40 dB
Selectivity:
-6 dB............................................................................. +/-10 kHz
-50 dB........................................................................... +/-18 kHz
Data Decode Sensitivity:
WX alert 1050 Hz tone ................................................... 0.45 µ V
Search Speed............................................... Up to 62 Steps/Sec.
Scan Speed ............................................Up to 50 Channels/Sec.
Delay Time ..................................................................2 Seconds
IF Frequencies:
1st IF ..................................... 380.8 MHz (380.680 – 380.86875)
2nd IF ...............................................................................45 MHz
3rd IF ...............................................................................450 kHz
IF Rejection (380.75 MHz) ........................... 75 dB at 154.6 MHz
Priority Sampling ......................................................... 2 Seconds
Squelch Sensitivity:
Threshold .......................................................................... 0.3 µ V
Tight (FM) ............................................................ (S+N)/N=30 dB
20-515Change01_04.fm Page 72 Friday, January 16, 2004 1:14 PM