[time-nuts] Why a 10MHz sinewave output

Attila Kinali attila at kinali.ch
Tue Feb 7 21:30:46 UTC 2012

On Tue, 07 Feb 2012 16:15:44 -0500
Mike Naruta AA8K <aa8k at comcast.net> wrote:

> On 02/07/2012 03:59 PM, Attila Kinali wrote:
> > while TV and radio uses 75R. (there was once a reason
> > for this, but i don't know it).
> A 4:1 balun takes old 300 ohm twinlead to 75 ohms.

Thanks! This explains half it :-)
Do you know why a 4:1 balun was used?

And do you know why other RF stuff and lab equipment is 50R? 

		Attila Kinali
Why does it take years to find the answers to
the questions one should have asked long ago?

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