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Old May 20th 06, 04:26 AM posted to rec.radio.shortwave
David
 
Posts: n/a
Default Two antenna questions

On Fri, 19 May 2006 20:24:19 -0400, "Unrevealed Source"
wrote:

1) Does anyone have any experience with or recommend an alternative to an
Alpha Delta switch, model Delta 4? Since the Daiwa CS-401 is discontinued
and seemingly impossible to find, I'm looking to upgrade from 2 to four
positions (more radios) but don't want the cheap junk of MFJ. Is there
another good but reasonably priced 4-port switch that anyone has experience
with, or do you recommend the Alpha Delta? That one is $75. This is for
receive only.

2) What do you do if you have succesfully matched your longwire to a 50ohm
coax with a MLB and have coax coming into the house, but now want to use
that on a high-impedance antenna input (those radios that don't have a coax
connection but just a terminal or jack for a long wire)? Do you do another
MLB with just a short length of wire on the antenna side for connection to
the radio?

Low Z generators are allowed into Medium Z inputs.

You cannot feed a Low Zinput with a Higher Z generator

Think of Impedance ''Z'' as the diameter of a pipe.