Topband
[Top] [All Lists]

Topband: Switching in Extra Antenna Length

To: <topband@contesting.com>
Subject: Topband: Switching in Extra Antenna Length
From: gmguerin@voyager.net (George & Marijke Guerin)
Date: Wed, 03 Jul 2002 10:20:44 +0100
Bill, et al:
    The first issue is impedance of the inverted L on 160.  The impedance
will be about 15 - 20 ohms on 160 with the top connected.
    The second issue is voltage on 80.  Make sure you have a good space on
the vacuum relay, as it is a High Voltage point on 80 meters.  Another
solution is a trap on top.  No switching on top, just on the bottom to get
from 36 ohms plus ground loss down to the 160 meter impedance.
    Good luck    George    K8GG



<Prev in Thread] Current Thread [Next in Thread>