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Re: Ladder Line

From: Andreé / DD3LY
Date: 06 Nov 2001
Time: 03:26:49
Remote Name: 195.145.17.185

Comments

Yes, you have some more loss, especially if you feed an antenna-type, which has a high VSWR so that you have high voltages on the line itself. The best ladder-line for high-VSWR-feeding would be a type with a kind of "next-to-air-only" isolation which means more distance than 450Ohm-line and just some and when a spreader, which you can make yourself. The second disadvantage is that the 300 Ohm line (its impedance) is much effected by rain, ice and snow. It is a bit less with the 450 Ohm-line and much less with such a mentioned high-impedance-no-isolation-line, because there is nearly nothing where rain, ice or snow can stay. If you make it from thin wire, maybe the XYL would accept it even more than the 300 Ohm-line.


Last changed: May 04, 2006