Quick Answer: Can SWR Be Too Low?

Does rain affect SWR?

The only thing that thermal expansion might cause is if the mechanical connections are not properly made.

Then, thermal expansion and contraction might result in a poor electrical connection.

If it is raining or snowing then the SWR can be affected.

Also, ice build up will have a definite effect on SWR..

Does SWR change with power?

SWR really doesn’t increase with power. It’s always the same.

How do I increase the range on my CB radio?

How to Increase the Receiving Range on a CB RadioInstall an antenna specifically manufactured for use with CB radios. … Place your antenna as high as possible, in a place where radio signals can hit it from 360 degrees. … Adjust the squelch on your radio so that it blocks out static, but is not maxed out.More items…

Can high SWR damage a radio?

IMPORTANT NOTE: Radio damage will only occur when you’re TRANSMITTING from an antenna with high SWR readings. Leaving the radio on to receive signals poses no risk to your radio. … Sometimes, you will get better performance from using one antenna instead of two.

Does SWR affect reception?

Simplified answer: There is no relationship between SWR and receive performance. … SWR is a measure of the impedance mismatch between your antenna and transceiver. Whether transmitting or receiving, a higher SWR correlates with a less efficient coupling of energy between the transceiver and antenna.

How do I know if my CB antenna is bad?

Testing for a Defective CB AntennaUsing your multimeter, touch one of the probes to the metallic end of the antenna. For fiberglass antennas, this will usually be the tunable tip on the antenna’s end. … Touch the other probe to the metallic threads at the end of the antenna. … As you maintain contact with both probes, measure the circuit’s resistance.

What does an SWR reading of 4 1 indicate?

What does an SWR reading of 4:1 indicate? Loss of -4 dB. Good impedance match. Gain of +4 dB. Impedance mismatch.

What does an SWR reading of 1 1 mean?

What does an SWR reading of 1:1 mean? The best impedance match has been attained. An antenna for another frequency band is probably connected. No power is going to the antenna.

What affects SWR?

There are many things other than the antenna that can cause high SWR. SWR meter readings take into consideration the antenna, the coaxial cable, the mount, the mounting location, the vehicle and objects in the antennas near-field environment.

What is an acceptable SWR reading?

What is a good SWR reading ? The best reading possible is 1.01:1 (46dB return loss), but usually a reading below 1.5:1 is acceptable. Outside the perfect world a 1.2:1 (20.8dB return loss) is spot on in most cases. To ensure an accurate reading, it is best to connect the meter at the base of the antenna.

Does coax length affect SWR?

“the length of the feedline will not change the swr it will change the apparent reading depending on what wave length you read the swr at. . just as adding a signifigant length of coax, the resultant loss will look like a lower swr.”