- What can you use a CB radio for?
- Does SWR increase with power?
- How far will a 4 watt CB transmit?
- How do you set a SWR on a CB radio?
- How do you tell if your CB antenna is grounded properly?
- Is 1.5 SWR good?
- Why does my CB says antenna warning?
- How do you calibrate a CB antenna?
- What is the most powerful CB radio on the market?
- What is the best height for a CB antenna?
- What does SWR Cal mean on a CB?
- How do I increase the signal strength on my CB radio?
- Does coax length affect SWR?
- What does an SWR reading of 4 1 indicate?
- What happens if you transmit without an antenna?
- How many miles can a CB radio transmit?
- What is a good SWR for a CB radio?
- What causes high SWR on CB?
- Can you use a CB radio without an antenna?
What can you use a CB radio for?
CB Radios are utilized during disasters and emergencies and can save lives.
Police, emergency responders, volunteer responders, and many more use CBs to communicate when infrastructure is damaged or nonexistent.
See our other article regarding use of CB communication during disasters and other similar events..
Does SWR increase with power?
SWR really doesn’t increase with power. It’s always the same.
How far will a 4 watt CB transmit?
Car, Boat, & Other Radios (Mobile & Fixed-Mount)Average Range Guidelines *WattageFlat Open Terrain (miles)Urban Areas (miles)4 watts (UHF)4 – 61½ – 35 watts (VHF)4½ – 61½ – 212 watt CB SSB (HF)8 – 153 – 55 more rows
How do you set a SWR on a CB radio?
Key the microphone (depress the button and hold it). Turn the knob on the SWR meter labeled “SET” or “ADJUST” until the needle reaches the setting position at the end of its range. While still keying the microphone, flip the switch on the SWR meter to the “REF” or “SWR” position.
How do you tell if your CB antenna is grounded properly?
If your CB antenna mount has a good ground, the multimeter needle should move all the way to the right when the probes contact these two locations. If you get very little or no needle movement on the multimeter, test that your meter is working properly by touching the two probes together.
Is 1.5 SWR good?
SWR 1.0-1.5: The ideal range! If your SWR is under 1.5, you’re in great shape. … Occasionally, due to installations or vehicle variables, it’s impossible to get SWR lower than than this. You should try to get it lower, but performance should still be acceptable in this range.
Why does my CB says antenna warning?
If the antenna warning light now stays off, someone may have gone in and altered some of the filtering that’s intended to make sure your radio is putting all its power onto the 27 MHz range, wherein lie the CB channels, so that it’s now putting out a lot of its energy on 54, 81, 108 MHz, etc.
How do you calibrate a CB antenna?
To properly calibrate your antenna you will need to find the balance for your lower frequencies and the higher ones.Connect the SWR meter to the antenna and the CB radio by twisting the end of the antenna’s cable onto the input on the SWR meter. … Set the CB radio to channel 1 and switch the SWR meter to calibrate.More items…
What is the most powerful CB radio on the market?
Most Powerful CB Radio Reviews 2020 – Best SSB CB RadiosUniden BEARCAT 980 40- Channel SSB CB Radio – (Most Powerful CB Radio)Galaxy DX-959B Mobile CB Radio – (Premium Pick)President Electronics MC KINLEY USA Hm AM/SSB Transceiver CB Radio.Galaxy-DX-949 40 Channel AM/SSB Mobile CB Radio.President Electronics BILL CB Radio.More items…
What is the best height for a CB antenna?
Generally, the higher the antenna is above ground, the better it will perform. Good practice is to install your vertical antenna about 5 to 10 feet above the roof line and away from power lines and obstructions. Remember that the FCC limits your antenna height to 60 feet.
What does SWR Cal mean on a CB?
Standing Wave RatioMany CB radios have a built-in meter for testing your antenna system. This testing process revolves around something called “S.W.R.” or Standing Wave Ratio. Many Cobra CB’s, like the Cobra 29 LTD Classic and the Cobra 29 LX, have both a switch, or a button, and an SWR CAL knob.
How do I increase the signal strength on my CB radio?
There are several procedures for ensuring maximum output.TUNE THE RADIO. A CB radio is only as good as the coax and antenna connected to it. … USE CB-SPECIFIC ANTENNAS. … ESTABLISH A GROUND PLANE. … CHECK THE VSWR. … ELIMINATE RESISTANCE.
Does coax length affect SWR?
The ONLY issue coax length has in a basic system is the longer it is the more loss you have. In fact because SWR is a measurement of reflected power and if you measure at the transmitter output your SWR can look better because there’s more cable loss than if it were shorter.
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 happens if you transmit without an antenna?
You could potentially break some radio transmitters by operating them without the antenna connected. Several things combine to make this possible. First, it’s difficult to make power at RF frequencies, so the power devices are often fairly fragile, and run near their limiting conditions.
How many miles can a CB radio transmit?
CB radios have a range of about 3 miles (4.8 km) to 20 miles (32 km) depending on terrain, for line of sight communication; however, various radio propagation conditions may intermittently allow communication over much greater distances.
What is a good SWR for a CB radio?
SWR Range Explanations: SWR 1.0-1.5: The ideal range! If your SWR is under 1.5, you’re in great shape. If you’re at 1.5 and really, really want to drop down to closer to 1 it’s likely possible to do with addition tuning, different equipment or a different mounting location.
What causes high SWR on CB?
One of the most common causes of high SWR readings is incorrectly connecting your SWR meter to your radio and antenna. When attached incorrectly, readings will be reported as being extremely high even if everything is installed perfectly.
Can you use a CB radio without an antenna?
CB Radio – Most new CB radios come with a microphone, mounting bracket and power cord, so you won’t need to buy those separately. CB Antenna – Without an antenna, your radio is useless! … Failing to tune your antenna can result in poor system performance and even permanent radio damage.