Radio Shack HANDHELD TRUNKING 20-521 Owner's Manual page 4

Flexible Antenna with BNC Connector — provides
excellent reception and is designed to help prevent an-
tenna breakage. Or, you can connect an external an-
tenna.
Monitor Memories — let you temporarily store up to 5
frequencies or IDs.
Memory Backup — keeps the frequencies stored in
memory for an extended time if the PRO-91 loses pow-
er.
Three Power Options — let you power the scanner
using internal batteries, external AC power using an
optional AC adapter/charger, or DC power using an op-
tional DC cigarette-lighter power cable.
Key Confirmation Tones — the scanner sounds a
tone when you perform an operation correctly, and an
error tone if you make an error.
Battery Save — saves battery power when the scan-
ner does not detect any transmissions for more than 5
seconds when a channel is manually selected.
Battery Low Alert — warns you when battery power
gets low.
Your scanner can receive these bands:
Frequency
Range (MHz)
29–29.7
29.7–50
50–54
108–136.9750
137–144
144–148
148–174
406–420
420–450
450–470
470–512
806–956
4
Step Transmission
(kHz)
5 10-Meter Ham Band
5 VHF Lo
5 6-Meter Ham Band
12.5 Aircraft
5 Military Land Mobile
5 2-Meter Ham Band
5 VHF Hi
12.5 Federal Government
12.5 70-cm Ham Band
12.5 UHF Standard Band
12.5 UHF "T" Band
12.5 Public Service
"800" Band, except
cellular band