[Fwd: LF: Luxembourg Effect...]

[Andre' Kesteloot]

DEREK ATTER wrote:

> Peter,
>
> Re: The "wobbly" carrier of  the 183Khz  AM station which you observed.
> Several of the medium wave broadcast station have sub-audible data encoded
> by phase modulation on the signal which becomes noticeable when a BFO is
> used. That is what you can probably hear.  For example,  the BBC station on
> 198Khz is also used as a frequency standard has sub-audible phase modulated
> data giving date / time and current deviation from UTC etc.
>
>                 73,  Derek  G3GRO