You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

[URL unfurl="true"]https://kv5r.com/ham-radio/ladder-line/[/URL]

450 Ohm - Balance / Ladder Line
Ladder line or "window line" is a variation of twin lead which is constructed similarly except that the polyethylene webbing between the wires which holds them apart has rectangular openings ("windows") cut in it. So the line consists of two insulated wires with bands of plastic holding them together every few inches, giving it the appearance of a ladder. The advantage of the windows is that they lighten the line, and also reduce the amount of surface on which dirt and moisture can accumulate, making ladder line less vulnerable to weather-induced changes in characteristic impedance. The most common type is 450 ohm ladder line, which has a conductor spacing of about an inch. ref. wikipedia.org

[URL unfurl="true"]http://www.hamuniverse.com/hfdoublet.html[/URL]

<blockquote data-quote="BJ radionut" data-source="post: 784881" data-attributes="member: 7026"><img src="https://www.universal-radio.com/catalog/cable/ladder.jpg" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" />[URL unfurl=&quot;true&quot;]https://kv5r.com/ham-radio/ladder-line/[/URL]450 Ohm - Balance / Ladder LineLadder line or &quot;window line&quot; is a variation of twin lead which is constructed similarly except that the polyethylene webbing between the wires which holds them apart has rectangular openings (&quot;windows&quot;) cut in it. So the line consists of two insulated wires with bands of plastic holding them together every few inches, giving it the appearance of a ladder. The advantage of the windows is that they lighten the line, and also reduce the amount of surface on which dirt and moisture can accumulate, making ladder line less vulnerable to weather-induced changes in characteristic impedance. The most common type is 450 ohm ladder line, which has a conductor spacing of about an inch. <a href="http://en.wikipedia.org/wiki/Ladder_line#Ladder_line" target="_blank">ref. wikipedia.org</a>[URL unfurl=&quot;true&quot;]http://www.hamuniverse.com/hfdoublet.html[/URL]</blockquote>

[QUOTE="BJ radionut, post: 784881, member: 7026"] [IMG]https://www.universal-radio.com/catalog/cable/ladder.jpg[/IMG] [URL unfurl="true"]https://kv5r.com/ham-radio/ladder-line/[/URL] 450 Ohm - Balance / Ladder Line Ladder line or "window line" is a variation of twin lead which is constructed similarly except that the polyethylene webbing between the wires which holds them apart has rectangular openings ("windows") cut in it. So the line consists of two insulated wires with bands of plastic holding them together every few inches, giving it the appearance of a ladder. The advantage of the windows is that they lighten the line, and also reduce the amount of surface on which dirt and moisture can accumulate, making ladder line less vulnerable to weather-induced changes in characteristic impedance. The most common type is 450 ohm ladder line, which has a conductor spacing of about an inch. [URL='http://en.wikipedia.org/wiki/Ladder_line#Ladder_line']ref. wikipedia.org[/URL] [B][URL unfurl="true"]http://www.hamuniverse.com/hfdoublet.html[/URL][/B] [/QUOTE]

Top Bottom