Today the power company took down the overhead lines coming up the 700ft driveway to my farm (in preparation for moving our circa 1870's farmhouse to the frontage of the farm onto a new foundation).
You may get a variety of answers, but I have used a lot of the 3/4 inch stuff over the years and was quite happy with the results. It worked well with long runs as long as there were no sharp bends.
If it has been handled carefully it should still be ok. Looks for cracks in the jacket where it was attached to the poles, any cracks may have let water in which would cause problems. I use catv hard
I also came up with some Cable TV hardline. Its 1/2 inch (I think) - Jacketed in PVC with an Air Dialectric. I have been looking for ways to connect it for my VHF / UHF antennas. Also I am concerned
you van use catv cable on your antennes buth you have to make 1/4 wave transformer from 60-62ohms coax to the antenna. I'm using mine for beverages reception and it is working ok here. marc on4ma 700
No you don't. I use 75 ohm here for 160m through 70cm with runs up to 350' with no transformers and no problems on any band. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.n
The calculated losses, using TLW, show why Dave's right. For 300 feet of 1/2 inch hardline at 432 MHz, with 50 ohm antenna and source, the apparent SWR will be 1.25:1, and there will be 6.567 dB of l
I have used lots of 75 ohm TV hardline over the years and have found it to work great. I have buried it in long runs to my Beverages (probably overkill, but it was free and buriable), and used it on
hard 50 of price is Those matchers must not be real good. 3 of my runs feed stacks on 10/15/20, each is 4/4/4/4+4south. All combinations come out with reasonable results and no amp retuning needed o
(I think) - looking for ways to about the I would be concerned also, since the cable can cause an SWR of over 2:1 at the radio. Most VHF and UHF radios do not tolerate such a high SWR this very well
Yeah, thats what I was worrying about-- If anyone has any good suggestions, I would love to hear them, I hate to have this stuff just sitting around, not doing anything. Tim I would be concerned also
I use it on 6m,2m and 70cm with a ts-2000 and a couple tm-261's for 2m packet and none of them complain. Plug it in and try it, if it isn't good enough match for your radio add a short length of 75 o
quality long Can someone explain the difference between 75 ohm aluminum shielded hardline and "plain old 75 ohm TV coax"? I was given two partial rolls OF 0.4 inch DIAMETER aluminum shielded, white c
Build 1/12th wave coaxial transformers on each end. Easily done if you are not happy with the swr. My last install for a 20m stack was almost 300 feet of the 3/4" catv with trannys on each end. Teste
Bob NX5M On Fri, 29 Oct 2004 11:33:28 -0400, Tim Holmes <W8TAH@Zoominternet.net> wrote : Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FL
The difference in the two is likely power handling and loss rating. The bigger size probably has a larger center conductor, better dielectric material and shielding, which normally gets the higher ra
If you are calculating you must factor in the velocity factor, some where around .8 to .9 for TV hard line. The best way I have found is to instal the cable from the antenna to the shack then check t
I'm not saying with luck you can't do use 75 ohm cable at UHF in 50 ohm systems, but personally I'd never do it without matching at each end. tm-261's for 2m The impedance range of a 75 ohm cable fee
1/12 wave at what frequency? Keith NM5G Build 1/12th wave coaxial transformers on each end. Easily done if you are not happy with the swr. My last install for a 20m stack was almost 300 feet of the 3
Maby I am just trying to over-simplify this but what would be wrong with connecting a 50 ohm. load to the far end of your 75 ohm hard line, putting a section of rg213 (or your favorite 50 ohm coax) o