# Question: Does Coax Length Affect SWR?

## How long should a CB antenna cable be?

18 feetSelect the correct coax length.

Many antenna manufacturers somewhat pre-tune the antennas utilizing 18 feet of coax which is why we generally recommend 18 feet of coax even if you don’t think that you need that much..

## Does a TV splitter weaken the signal?

A cable splitter WILL result in a degradation of the signal, even if the other ports are unused. One thing you can do is to add terminator caps to each unused port. They are supposed to reduce the degradation. Note that cheaper cable splitters will actually have a different amount of signal loss for each port.

## How do you calculate coax cable length?

To calculate the electrical length of the line you need to multiply the velocity factor of the line (available from the supplier of the line) by the free space length. For the length in feet, this is (983.6 / frequency in MHz) * velocity. For the length in meters, this is (299.8 / frequency in MHz) * velocity.

## What is the maximum length for coaxial cable?

Coaxial cable can be cabled over longer distances than twisted-pair cable. For example, Ethernet can run approximately 100 meters (328 feet) using twisted-pair cabling. Using coaxial cable increases this distance to 500m (1640.4 feet).

## Are rg6 and rg11 connectors the same?

Both the RG6 and RG11 cables are 75-ohm cables that make use of F-type connectors. RG11 has a greater and longer range longer than the R6. To be more specific, the RG6 tops out at 50 feet before the total signal loss. The RG11 does better with more than 50 feet to about 10 feet.

## What is the maximum distance for rg6?

InformationCable Type*Maximum DistanceRG59/U750 ft (229 m)RG6/U1,000 ft (305 m)RG11/U1,500 ft (457 m)Oct 6, 2018

## Can you connect rg6 to rg11?

You can mix coaxial cable types. It’s very common for RG11 to be used for long runs and RG6 to be used for shorter runs. Typically you would switch cable types at an intermediate closet where the RG11 cable will go into an amplifier and RG6 cable will come out.

## Can I use 75 ohm coax for CB?

RG-59 and RG-6 are 75 Ohm coaxial cables designed for cable television applications, they tend to have wide frequency response and low line loss. … You can use these cables with a 50 Ohm amateur radio antenna system, but because of the impedance mismatch, your SWR will be a little higher.

## Will a CB work without antenna?

No antenna, no transmitting signal is going out. No antenna while transmitting, you’ll probably need a new radio.

## Does length of coax affect signal?

When it comes to signal loss over longer cable lengths, the basic rule of thumb is that a 50-foot cable can experience noticeable signal loss, and a 100-foot cable can drop as much as one-third of the original signal.

## Does coax length matter?

When the coax and load are matched to one another (for us, that’s usually a 50 ohm coax and 50 ohm load), and when there is no common-mode current, the coax length makes no difference. If the coax is radiating because there is common mode current on it, then its length matters tremendously.

## Do coax couplers reduce signal?

Splitters cut signal in half (3db). Couplers cut very little (0.5db).

## How can I make my coax cable longer?

How to Make My TV Cable LongerPull a measuring tape over the area where you intend to extend the TV cable. … Purchase a WF100 extension cable fitted with a male “F” connector at each end. … Connect a threaded “F” barrel coupler onto the “F” connector at the end of the TV cable you wish to extend.More items…

## Are CB radios making a comeback?

Many thought citizens band radios would disappear after the 1970s, along with pet rocks and disco. But not only are they still around, they are making a comeback. CB radio sales have increased steadily during the last three years, a trend not seen since the 1970s.

## 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 is the best grade of coaxial cable?

Coaxial cable designed for domestic television should be 75 Ohm, with RG-6 coaxial being ideal for TV. The best coaxial cable for HDTV is RG-11. This type of cable offers a higher gauge than others, which provides more space for signals to transfer.

## Can you get HD through a coax cable?

Coax can easily do 1080i/720p(even 1080p, but nobody broadcasts 1080p), but if you go through a cable box, they don’t let you output HD anymore through Coax. This is why if you have a cable ready tv and plug it into the wall with no set top box, you can get HD channels, but only local channels.

## Does CB antenna length matter?

Yes, taller/longer is better for range of distance when it comes to an antenna and the optimal antenna length is 1/4 wavelength. That translates to 102 inches (8.5 feet), too tall to be practical for most mobile applications. So, antenna designers have devised solutions such as coils.