TL> Bruce: If the coax were perfect (constant Z and no loss) then the
TL> VSWR is the same at all places. IF there is a VSW, then the exact
TL> impedance seen by the xmitter will vary with the lenght of coax 
You're probably right about the coax Tom. But the main reason for
the coax to have different Z along it's lengt is that the ANTENNA
is not perfectly matched. If you had an antenna with 50 Ohm impedans
and used ordinary 50 ohm coax (RG50 or RG213), it shouldn't matter
where the SWR is checked along the cable. But antennas seldom have
50 Ohm Z, especially if you want to receive/transmit on multiple
frequences with a "high-performance" narrowband antenna.
You probably already knew that, but the info could be new to
someone else reading this thread.                      Ubbe.
--- Blue Wave v2.12 [NR]
---------------