[TowerTalk] Best Coax (Matching 50 to 75 Ohms)

[n4kg@juno.com]

OOPS!   I goofed.  

A simple way to match 75 Ohm cable to 50 Ohms is to use
a series transmission line transformer consisting of 0.08 WL
of 50 ohm line followed by 0.08 WL of 75 Ohm line.

[ 50 Ohm Load ] -- [ .08 WL 75 Ohm ] -- [ .08 WL 50 Ohm ] -- [ 75 Ohm
Cable ]

de  Tom  N4KG


On Thu, 13 Apr 2000 12:19:05 EDT K7GCO@aol.com writes:
> In a message dated 12.04.00 16:18:22 Pacific Daylight Time, 
> n4kg@juno.com 
> writes:
> 
> << 
>  Other matching tricks include 50 to 75 Ohm UnUns and
>  1/8 WL 50 to 75 Ohm coaxial transformers.
>  
>  de  Tom  N4KG >>
> What are these 1/8 WL 50-75 ohm coaxial tranformers?
> 
> When foam coax first came out they goofed and just added foam.  The 
> end 
> result was 60 ohm coax.  Then they increased the center conductor 
> size and 
> made it 50 ohm coax.  I use 1/4 WL of it to match 50-75 ohms.  K7GCO

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