Can you use TV coax for CB?
The cable TV coax its self won’t work as an antenna. It also won’t work well for a feed line to a CB antenna as it is 75ohm cable and CB’s are designed for 50ohm feed line and antenna. Of course you could connect it to the radio, you might hear something, probably not much.
Do I need a balun on my TV antenna?
Member. Yes, you do need a balun. A simple quarter-wave dipole is balanced, coax cable is not. Your problem now is that the outer of the coaxial cable is acting like part of the antenna, adding or subtracting from the signal as you move it around.
What is a TV matching transformer used for?
The Outdoor Balun/Matching Transformer (CM-94444) is used to convert the 300 ohm antenna output to 75 ohms so that low loss coaxial cable can be used to transport the TV signals from the antenna to the TV set. It is called a matching transformer because it matches the 300 ohm antenna output to the 75 ohm coaxial cable.
Can I install my own TV antenna?
So, whilst it is possible to install your own TV antenna, it is highly recommended to get a professional installer. The use of professional signal meters alone, will save possible hours in trying to find signal and align the antenna, and get the best possible reception on each TV channel.
How do you make a TV balun?
DIY TV Balun
- Use the knife to strip off the outer insulation from the coaxial cable 2 to 3 inches back from the end.
- Use the tip of the knife to unbraid the shield back to the insulation.
- Twist all the strands of the shield together to make them form a single wire.
How tall of a balun do I need for an OCFD?
I already have a 75-300 ohm TV balun and lots of CATV coax. Per this page when an OCFD is 20-25 feet above ground I should use a 4:1 balun, which matches the 75-300 ratio, if I am not mistaken. And 25 feet is about the max height I can get by slinging up in the trees around my house.
Do you have to use balun for coax cable?
TV coax typically has foam dielectric and very low loss. On receive it does not matter if you use 50, 60 72 or 75 ohm cable. With short cables, losses are also not important. The cheap TV balun could be problematic, particularly if you want to transmit.
What kind of balun do you need for An OCF dipole?
Various sources gave different information on the feed point. Some say a 9:1 balun, some say a 6:1 balun is required, and yet some say a 4:1 balun. Others claim that it must be a current balun to work. I already happened to have a 4:1 Unidilla voltage balun still in the package hanging in my garage.
Can a cheap balun be used to transmit TV?
The cheap TV balun could be problematic, particularly if you want to transmit. It is trivial to make a 1:2 transformer to get the 4:1 impedance transformation you need, but it is hard to get bandwidth larger than 10:1. I suggest you go ahead without worrying so much about what is theoretically optimum.