Topband: 75 ohm RG6 to 50 Ohm radio

[Tree]

I suppose I need to ask if worrying about impedance at this point in the
system is really worth the trouble.

Once signals have gone through one or two stages of amplification - would a
loss of a db or so in signal strength really matter?

Tree N6TR

On Tue, Sep 27, 2016 at 8:46 PM, Lee STRAHAN <k7tjr at msn.com> wrote:

>
>  Yes Ed, You have the right numbers. It won't matter which windings are
> first or last. You can even wind 4 then wind 1 more and use it as an
> autotransformer where the 1 turn is added to the 4 for 5. Any of these will
> work fine at these TOP Band and higher frequencies. This ratio is not
> perfect but will work just fine. It would be 50 to 78 ohms which in our
> world is close enough.
>  Let us know how your new 8 circle works. Maybe even compare it to your
> Hi-Z 4-square.
> Lee   K7TJR
>
> -----Original Message-----
> From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Ed
> Stallman
> Sent: Tuesday, September 27, 2016 8:35 PM
> To: topband at contesting.com
> Subject: Topband: 75 ohm RG6 to 50 Ohm radio
>
> My receive antenna is 75 Ohm RG6 connected to my radio and I want to wind
> a 2873000202 binocular core to step 75 to 50 Ohm's . I seen this info on
> W8JI web page but can't seem to find it again.
>
> I do remember it's 4 turns 50 Ohm and 5 turns 75 Ohm and all wires come
> out the same side of the core . Am I correct so far?
>
> Does it make a difference which winding I wind first ?
>
> Thanks in advance , Ed N5DG
>
>
>
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