How to Adjust the SWR on the Uniden PC78XL CB Radio

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By eHow Contributing Writer

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The Uniden PC78XL is a superlative in the field of communications equipment intended for use in the Citizens Band Radio Service representing the next big step towards a world without wires after the LTW series of radios. The radio device offers the use of 7 weather channels, a weather alert system, an instant channel 9 for emergencies concerning the safety of individuals or properties, working on any of the 40 frequencies authorized by the FCC. It’s adaptable, red-light LED channel display and transmit/receive pointers allow you to check activity at a glance. Uniden CB Radios are well-known worldwide for their excellent performance and high-quality, and the Uniden PC68LTW cb radio is surely nothing less.

Difficulty: Easy

Instructions

Things You'll Need:

Uniden PC78XL

Step 1

Alter the pointer of the S/RF/SWR/ CAL knob to CAL.
Step 2

Attune the SWR meter with the help of the SWR CAL button situated on the front panel by adjusting the indicator to the mark.

Tips & Warnings

The SWR control button is used to adjust the meter for Standing Wave Ratio (SWR) measurements.
it is wise to check the antenna and cable connections if the ANT indicator LED points out a high Standing Wave Ratio condition in order to prevent the radio from breaking down.
Before beginning to operate the radio receiver device, you have to get informed about the FCC Rules and Regulations that may apply and perform a SWR measurement. If the Standing Wave Ratio is too great, it can damage the device.
Try to remember that any SWR reading above 2 is an indication of problems with the antenna system. These problems can be caused by exterior factors like humidity or high vibrations. Thus, if you find yourself in this situation it is always wise to check the coaxial cable connector and look for physical damage at the cable or antenna.
Always keep in mind to check the content of the PC78XL box just after buying one in order to make sure that all the components are there. A PC78XL radio box should contain PC78XL CB 2-way mobile radio Microphone Mounting Bracket Kit DC Power Cord Reference Guide Part 95 Subpart D (FCC Rules) Product Registration Card.