Midland 13-898B, Manual

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C A L -S W R PU SH SW IT C H
This switch will be used to check the SWR (Standing Wave Ratio) of your antenna system.
SW R C H E C K
1. Connect your antenna system to the antenna conneetor on the rear panel.
2
. Place the mode switch in the AM position and the CB/РА switch in the CB position.
3. Place the CAL/SWR switch in the released out position.
4. Press the push-to-talk button on the microphone and rotate the RF-CALIBRATE knob so that
the SWR meter pointer reads maximum or SET. Release the push-to-talk switch.
5. Depress the CAL/SWR push switch and agam press the push-to-talk button. The SWR of your
antenna system will be indicated on the lower scale.
SWR readings of less than 1.5 are désirable, and usually obtainable with modern factory-made
anten nas in good condition.
Readings up to 2.5 may be acceptable, but readings over 3.5 should definitely be reduced by adjust-
ment o f the antenna system.
NOTE: After completion of SWR CHECK, always place the RF-CALIBRATE Knob in the RF
(full со unter-clockwise position) position.
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