[TowerTalk] 75 ohm coax matching

[David O Hachadorian]

On Mon, 7 Jul 1997 09:37:20 -0400 (EDT) TexasRF@aol.com writes:
>A little known and used method of matching 50 ohm loads and sources to 
>75 ohm
>coax is the "series transformer". They are by their very nature single 
>band
>devices but there are applications as they allow the 75 ohm line to be 
>any
>desired length.
>
>Basically the series transformer in the 50 to 75 ohm case boils down 
>to a 30
>degree length of 75 ohm coax followed by a 30 degree length of 50 ohm 
>coax.
>At the radio end, the reverse is done: 30 degree length of 50 ohm coax
>followed by 30 degree length of 75 ohm coax. Ain't science wonderful!? 
>Try
>it, you will like it! 73 de K5GW

This approach was just detailed in the June, 1997 issue of
QST, page 43. It's pretty neat, at least for a single band.

Dave Hachadorian, K6LL
k6ll@juno.com

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