To: | <topband@contesting.com> |
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Subject: | Topband: Removing RF from lines on a directly fed tower. |
From: | RMcGraw@Blomand.Net (Robert & Linda McGraw K4TAX) |
Date: | Fri, 01 Mar 2002 16:48:03 +0000 |
I've de-coupled feeds, antennas, lights and a host of other stuff on broadcast towers using this method for years. This was before the use of ferrite beads. While they work great, correctly used, I'd say from experience that 18 is not nearly enough inductance for 160M. The coil of line or whatever around a 3" or larger PVC pipe works better than most other applications. Hint: use some 1/8" nylon line wound along with the rotor cable or other coax to evenly space the turns. Works even better. 73 Bob K4TAX |
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