What is the procedure to check SWR?
The procedure for checking SWR is basically the same whether using a built-in meter or an external meter. Follow the instructions that come with the meter. Here is the basic procedure: 1. SWR must be checked in an open area. Park the vehicle away from buildings and trees, which can affect your readings. Do NOT check SWR inside a garage. 2. Close the doors, hood, and trunk lid. 3. Select the channel to check. It is recommended to check channels 1 and 40. 4. Set the switch to the CAL, FWD, or FORWARD position (depending on the meter). 5. Push the transmit button on the microphone, then adjust the calibrate knob so that the needle goes to the CAL marker on the display. The CAL marker is always located on the far right-hand side of the display (maximum deflection). It will say either CAL or SET. 6. While still holding the transmit button, set the switch to the SWR, REF, or REFLECTED position (depending on the meter). 7. Read the SWR on the meter. On Cobra CBs, the top scale of the meter is
