Radio Shack PRO-137, Manual

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9

Battery Notes

• When battery power is low, BATTERY Symbol 

flashes and the scanner beeps every 15 
seconds. When battery power is depleted, 
the scanner turns itself off. 

• Rechargeable batteries last longer and 

deliver more power if you let them fully 
discharge once a month. To do this, use the 
scanner until BATTERY Symbol flashes.

• Use only fresh batteries of the required size 

and recommended type. Do not mix old and 
new batteries, different types (alkaline or 
rechargeable), or rechargeable batteries of 
different capacities.

• Remove old or weak batteries. If you will not 

use the scanner with batteries for a month, 
remove the batteries. Batteries can leak 
chemicals that destroy electronic circuits.

• Always dispose of old batteries promptly and 

properly. Do not bury or burn them.

The EPA certified RBRC© Battery Recycling 
Seal on the nickel-cadmium (Ni-Cd) 
battery indicates RadioShack voluntarily 

participates in an industry program to collect 
and recycle these batteries at the end of their 
useful life, when taken out of service in the United 
States or Canada. The RBRC program provides 
a convenient alternative to placing used Ni-Cd 
batteries into the trash or the municipal waste 
stream, which may be illegal in your area. Please 
call 1-800-THE-SHACK 
(1-800-843-7422) for information on Ni-Cd battery 
recycling and disposal band/restrictions in your 
area. RadioShack’s involvement in this program is 
part of the company’s commitment to preserving 
our environment and conserving our natural 
resources.

External Power

You can power your scanner using a 6V, 800mA 
AC/DC adapter (not supplied).

To use an external power source:

1.

Always connect the adapter (not supplied) to 
the scanner first.

2.

Plug the adapter into the power source.

3.

To disconnect, unplug the adapter from the 
power source first.

Warning:

 Do not connect a charging adapter to 

the scanner if non-rechargeable batteries (such as 
alkaline batteries) are installed in the scanner and 
the switch is set to Ni-MH, or if you are unsure of 
the switch’s position. Non-rechargeable batteries will 
get hot and can explode if you try to recharge them.

Caution:

You must use a Class 2 power source 

that supplies 6V DC and delivers at least 800mA. 
Its center tip must be set to positive and its plug 
must fit the scanner’s 

DC 6V 800mA

 jack. Using 

an adapter that does not meet these specifications 
could damage the scanner or the adapter.

Turning on the Scanner

Make sure the scanner’s antenna is connected, 
then press and hold 

/

/ KEYLOCK

. The 

scanner turns on.

Setting the Volume

1.

Push the

 SEL/VOL/SQL

 knob. 

2.

Rotate the knob to select the volume level 
from 0 to 15.

Setting the Squelch

1.

Press 

Func

, then push the 

SEL/VOL/SQL

 knob. 

2.

Rotate the knob to select the squelch level 
from 0 to 15.