Radio Shack HTX-242 owner manual Connecting an Antenna

Connecting an Antenna

You can connect a variety of antennas for both mobile and base- station use (see “Using the HTX-242 as a Base Station” on Page 10). Each type of antenna has its benefits. Choose one that best meets your needs.

When deciding on a mobile or base-station antenna and its loca- tion, consider the following:

•The antenna should be as high as possible on your vehicle or house.

•The antenna and antenna cable should be as far away as possible from sources of electrical noise (ignition systems, power cables, and so on).

•The antenna should be vertical.

•The antenna should have an SWR of less than 1.5:1. An SWR of 1.8:1 or greater can prevent the HTX-242 from per- forming to its specified ratings.

After you select an antenna, follow its mounting instructions. Then route the antenna cable from the antenna to the HTX-242 and connect it to the antenna connector.

Connect the antenna to your HTX-242 using 50-ohm coaxial cable. The cable should end in a PL-239 connector.

Cautions:

•To prevent damage to your HTX-242, you must connect an antenna to it before you operate it.

•Do not run the cable over sharp edges or moving parts that might damage the cable.

•Do not run the cable through the engine compartment or other areas that produce extreme heat.

•Check with your vehicle manufacturer for antenna cable routing guidelines.

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