Radio Shack PRO-137, Manual

6

7

Connecting the Antenna

Attach the supplied antenna 
to the scanner by screwing it 
tightly onto the anchor post at 
the top of the scanner. 

When using an external 
antenna, always use 50-ohm, 
RG-58, or RG-8, coaxial 
cable to connect to it. If the 
antenna is over 50 feet from 
the scanner, use RG-8 low-loss 
dielectric coaxial cable. If your 
antenna’s cable does not have 
an SMA connector, your local 

RadioShack

store carries a 

variety of SMA adapters.

Attaching the Belt Clip

1.

Align the belt clip so that 
the finger indentation is 
towards the top of the 
scanner.

2.

Align the center of the clip with the anchor 
post.

3.

Place the clip on the post and slide the clip 
upwards until it clicks into place.

To remove the belt clip:

1.

Rotate the clip so that the finger indentation 
is towards the bottom of the scanner. 

2.

Slide the clip up until it comes free of the 
anchor post.

Powering Your Scanner

You can power your scanner with three AA 
batteries (not supplied) or an external power 
source (not supplied). 

Batteries

For the longest operation and best performance, 
use alkaline batteries, available at your local 

RadioShack

 store, or use 

RadioShack

 nickel-

metal hydride (Ni-MH) rechargeable batteries.

To install batteries:

1.

Slide open the battery compartment cover on 
the back of the scanner.

2.

Set the switch according to the type of 
batteries you are installing:  

ALKALINE

or

Ni-MH.

3.

Place 3AA batteries into 
the battery comparment.

4.

Replace the cover.

To charge batteries:

1.

Set the switch to Ni-MH.

2.

Install rechargeable batteries.

3.

Connect an external power source to the 

6V 800mA

 jack. 

The scanner stops charging automatically after a 
maximum of 14 hours.

Warning:

 Only set the switch inside the 

battery compartment to Ni-MH for use with 
Ni-MH rechargeable batteries. Never use non-
rechargeable batteries when the switch is set to 
Ni-MH.

Alkaline / Ni-MH 
Switch