It took me literally decades to realize this, but the low ladder line losses that show up in the ARRL graphs are not because ladder line is magical. I had been reading many articles in QST, and on th
It's because ladder line is used at 450 or 600 ohm impedance, so it of That tenuous advantage disappears if one popular 360 ohm heavy duty window line variant of "450" line is operated at a mismatch.
That tenuous advantage disappears if one popular 360 ohm heavy duty window line variant of "450" line is operated at a mismatch. At that point the stranded copperweld conductors (used for physical st
I briefly used the "window line" you all are discussing, before I built my own parallel line from scratch. I think all the window line that's available today from Wireman, RF Connection, etc is made
That tenuous advantage disappears if one popular 360 ohm heavy duty window line variant of "450" line is operated at a mismatch. At that point the stranded copperweld conductors (used for physical st
It is surprisingly easy to make one's own ladder line, on a budget, from materials that are locally available. I have made ladder line from 12ga THHN wire, 1/4 tubing, UV resistant zip ties, and supe
OWL using #14 THHN and 1/2 in. irrigation "drip" tube. If drilled with the right sized hole, the spacers pinch the wire enough to stay in place w/o any additional hardware: http://no3m.net/index.php?
I use strips of 1/16" polycarbonate, about 5/16" wide by 4" long, with 1/16" holes punched near the ends and a slit cut for wire insertion, as spacers for my #14 solid wires. Has held up to the weath
Others have gotten 370 as well. I got 360 and 370 off different rolls. That's less than 3% variation. The one up now is 360. The next roll, who knows. I was always surprised at how often 50 and 75 oh
YES!! Good, no...SUPER, punch! I purchased mine over 20 years ago and it still works great! Hard to wear out. It came with a fitted metal case (then!!)....I see now it's a plastic case which, I hope,