[Elecraft] Metal masts and dipoles etc

Wed Jun 12 00:01:05 2002

Stand it off!  DO NOT....repeat....do not run any twin line or open wire type line up
a metal mast taped or tied to the mast.  A nasty impedance "bump" will result.  The
higher the impedance of the line, the more clearance is required.  I would say use at
least twice
the clearance as the line is spaced.  More if it is being "flopped around" by a stiff
wind that would cause it to slap the mast.

73,
Sandy W5TVW
----- Original Message -----
From: "Tim and Nancy Logan" <[email protected]>
To: "Elecraft" <[email protected]>
Sent: Tuesday, June 11, 2002 9:28 PM
Subject: [Elecraft] Metal masts and dipoles etc

| Hifolks -
|
| I know this is off subject, but the reflector is such a great resource,
| I hope no one minds. I have a typical sectional steel mast for erecting
| a 30' field mast. How does the metal in the mast impact, for example,
| 75ohm twin lead or 400ohm ladder line running to a dipole?  Or the coax
| running to a Carolina Windom 40? does the feedline have to stand off a
| minimum distance of some sort? Any thoughts would be most appreciated.
|
| Regards, Tim Logan NZ7C
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