Just got a new magnet in the mail for my wilson 1000 antenna. Its a wilson 1000 magnet. Ive tried cutting off a inch on the antenna and it doesnt seem to come down. Should I keep cutting some off the antenna? Or is the wilson 1000 core bad?
I hope you got your Wilson 1000 issues fixed by now! I'm new here, but have installed about half a dozen radios and antennae on various vehicles, over the decades. I have never had to cut an antenna.
So, What are my readings telling you about my wilson 1000?
Sorry to tell you this but they tell you nothing as you're testing using a DC meter. You need to test using AC (which RF is) at the frequency you want. You will need an antenna analyser to do this which will give you a reactance and impedance reading. What we're interested in is the impedance, R, where reactance, X, = 0. Basically a quarter wave vertical over a perfect ground has a feedpoint impedance of 36.8 Ohms at resonance (reactance X=0) so that is our reference point for working out ground efficiency.
So you stick your antenna on the vehicle, doesn't matter a toss about where its tuned for for now, and with the analyser find where X=0 and see what the value of R is. The further away from 36.8 Ohms it is, whether below or above, the less of a perfect ground you have and the more ground losses you have.
Now if you go to www.k0bg.com, read the page on bonding and start doing that then do the above tests as you're going along you'll find you get closer to R=36.8 Ohms as you go along and you'll also notice that without altering the length of the antenna, the frequency where X=0 also changes and should rise. That is another indication you're improving the ground.
So you've done all the mounting, the grounding, the bonding and you've got as close to R=36.8 Ohms at X=0 as you can THEN you tune the antenna to have X=0 slightly below the centre of the range of frequencies you want to use. The SWR dip doesn't follow X precisely so where X=0 isn't where your lowest SWR is going to be, if it is you've a lossy install. Instead you'll find the lowest point for the SWR will be slightly higher in frequency.
Swr"s nice out of the box and with amp
How much power are you using? Anything over 100W and you'll definitely benefit from hard mounting the antenna as magmounts work by capacitive coupling and can only provide so much ground. When that hits its limit it starts using the coax.