LF: Re: Re: Notch for DCF39/Spectrograms/Luxembourg effect

["Hugh" <m0wye@thersgb.net>]

Hi Jim,
Thankyou for your contribution on the notch filter.
Also for the idea about the "Luxemborg effect".
I notice the sounds and patterning on the screen are only there during the
hours of darkness, does that prove that it is the ionosphere and not the
radio ?
Does the ionosphere cause non-linear mixing of higher frequencies or just LF
?
Have you tried out your buffer circuit - or is it just a "circuit idea" I
wonder ?
73
Hugh M0WYE