How do you check the SWR on a Cobra 29?

29 LX-SERIES Close all doors, hood, and trunk. Choose the channel to check (channel 19 is recommended). On the radio, press the SWR/CAL button until the display says “CAL”. While holding the transmit button on the microphone, turn the SWR CAL knob until the meter reads to the CAL mark.

What does the ant light mean on a CB radio?

A common reason for the ant light to light up is that the antenna is not grounded properly. Check out this page from Firestik for more information on swr and cb’s. If your ant light is on when you transmit, stop using the radio and fix the swr. You will ruin the radio. Good luck and enjoy your cb radio!

How do I fix the antenna warning on a Cobra 29 LX?

Adjusting the antenna warning on the 29 Print

  1. Unplug the power cord.
  2. Unscrew the 2 screws.
  3. Move the board aside.
  4. After moving the board aside, put some paper under it so that it does not touch anything and short-out.
  5. Reconnect the power cord.
  6. Complete the adjustment procedure on the next page.

Can SWR be too low?

An SWR too low over the whole band (1:1 for all 40 channels) can indicate a low efficiency antenna or lossy component. Safe operation of your CB should be with an SWR of 2:1 or less. Most people would prefer to be 1.5:1 or less.

What settings should my CB be on?

Recommended Setting: Fully clockwise. DELTA TUNE – If the other person’s CB is a little off-frequency, their signal may sound a little distorted. If so, you can adjust the Delta Tune to clarify their voice. Delta Tune only affects received signals, it has no effect on transmit.

Why is my Cobra CB say antenna warning?

The antenna warning should only come on if the SWR is over 3. If the antenna warning comes on when the SWR is below 3, then the antenna warning needs to be adjusted.

How do I lower my SWR?

If your antenna is mounted down low on the vehicle, like on the bumper or behind a pickup truck’s cab, the signal can bounce back to the antenna, causing a high SWR. To alleviate this, keep at least the top 12 inches of the antenna above the roof line, and position the antenna as high as possible on the vehicle.

How can I improve my SWR?