[Lowfer] 162 kHz Accurate frequency reference in lowfer band

[STEVE]

Yes, on decent nights it's easily heard here in S. AZ too. (198 BBC has 
a similar setup but of course is still broadcasting program audio plus 
there's 198 DIW NDB when it's on).

73,

Steve AA7U

On 12/18/2020 12:49 PM, Bill de Carle wrote:
> A couple of nights ago I tuned across the lowfer band (160..190 kHz) 
> after a long absence.  Found a strong signal on 162 kHz that sounded 
> much like psk31, but it would not decode.  Figured it must be 
> something local, but today I realized it is actually coming from 
> France!  It's a french time signal (TDF) broadcasting on the old 
> Longwave Allouis station frequency: 162 kHz.  The phase modulation is 
> done in such a way that you can measure the carrier frequency easily.  
> It was probably always on the old Allouis carrier but we never noticed 
> it?  They say the carrier frequency is controlled by an atomic clock.  
> It is inaudible during the day at my QTH in Ontario but easily 
> detectable by recording a minute or so then doing an FFT - the line 
> shows up distinctly and it's exactly on frequency.  At night the 
> signal is S8 to S9 here.  If anyone wants a convenient reference 
> frequency in the lowfer band, here it is.
> For more info: 
> https://en.wikipedia.org/wiki/Allouis_longwave_transmitter 
> <https://en.wikipedia.org/wiki/Allouis_longwave_transmitter>
> Bill VE2IQ
>
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