PRO-42 Programmable Scanner
(200-0302)                 Preparation                Faxback Doc. # 39659

Connecting The Antenna

To attach the flexible antenna to the ANT jack on top of your PRO-42, slip
the slot in the antenna's connector over the protrusion on the ANT jack.
Then, rotate the antenna's connector until the antenna locks into place.

The ANT jack makes it easy to use the PRO-42 with a variety of antennas.
You can remove the supplied antenna, and attach a different one, such as an external mobile antenna, telescoping antenna or outdoor base antenna. Radio Shack stores sell the antenna adapters that let you use these antennas.

Use coaxial cable to connect an outdoor antenna.  Always use 50-Ohm coaxial cable.  For lengths over 50 feet, use RG-8 low-loss, dielectric coaxial cable.

To improve performance in the 30-50 MHz range, we suggest the center loaded whip antenna (Cat. No. 20-006).

WARNING:  When installing or removing an outdoor antenna, use extreme 
          caution. If the antenna starts to fall, let it go!  It could 
          contact overhead power lines.  If the antenna touches the power 
          line, contact with the antenna, mast, cable or guy wires can 
          cause electrocution and death!  Call the power company to remove 
          the antenna.  Do not attempt to do so yourself.

Connecting An Earphone

For private listening, plug an earphone into the EAR jack on top of your
PRO-42.  This automatically disconnects the speaker.  We recommend Radio
Shack's earphone (Cat. No. 33-175). In a noisy environment, mono headphones (Cat. NO. 20-210) make listening easier.

WARNINGS:  Always set the volume to its minimum position before you put on
           an earphone or headphones.  Then, adjust the volume to a 
           comfortable listening level.

           Do not wear headphones while operating a motor vehicle. This 
           can create a traffic hazard and is illegal in some areas.

           Do not listen (especially using headphones) at extremely high
           volume levels. Extended, high-volume listening can lead to 
           permanent hearing loss.

Connecting An Extension Speaker

In a noisy area, an extension speaker such as Radio Shack Cat. NO. 21-549
might provide more comfortable listening.  In a vehicle, you can use our
amplified speaker (Cat. No. 21-541).  Plug the speaker cable's 1/8 inch mini-plug into the EAR jack.

(EB 5/20/97)

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