This calculator is designed to model the common configuration where a transmitter which is designed for a particular load impedance, is connected to a an antenna of that impedance, over transmission line of the same characteristic impedance.
The calculator allows specification of the transmission line loss 'upstream' and 'downstream' from the measurement point. It is intended to provide a simple analysis of the system at the transmitter and at the antenna where a directional wattmeter is used to take measurements in the system at some convenient intermediate point. It assumes that the characteristic impedance of the transmission line is real, which is sufficiently accurate above 1MHz for most lines.
RF Transmission Line Loss Calculator / Enhanced
VSWR nomographs (PDF - you need Acrobat Reader)
Other VK1OD tools.
V1.01. Use at your own risk, not warranted for any purpose. Do not depend on any results without independent verification.
CVS: $Id: vswrc.php,v 1.19 2008/01/27 09:57:34 owen Exp $
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© Copyright: Owen Duffy 1995, 2001. All rights reserved.