[Lf] Is this the Amrad Beacon?

[Andre' Kesteloot]

john sexton wrote:

> Hi All,
> I used Argo last night to monitor the Amrad Beacon frequency at 136.750 kHz
> and found a signal precisely on frequency to within 0.01 Hz. I used the
> highest resolution of 120 sec dots, which means that one cannot see the QRSS
> coding, which is probably 3 sec dots, but the signal could probably not be
> seen at all if I had set Argo to that dot length. I used the Loran lines to
> calibrate Argo.
>
> To see the best image click on www.g4cnn.f2s.com/amradbeacon.jpg. The signal
> is about 0.01 Hz low in this picture, but when I recalibrated Argo this
> morning, I found the nearest Loran line at 136751.5669 also appeared 0.01 Hz
> low, so this is just a calibration error (still learning).
>
> The signal was visible from about 22.00 last night (010205) until 06.00 this
> morning when it died out.
> I saw no clear "Dawn effect" on the QRN in these images, but the QRN is low
> throughout, which might be a result of using this resolution, or perhaps the
> different frequency.
>
> In order to measure to 0.01 Hz accurately, I had to import the images into
> Paint Shop Pro and use the vernier to measure the difference in position of
> two consecutive 1 Hz marks and the line. The lack of finer vertical scaling
> in Argo is the one minor deficiency in this otherwise excellent package.
> Thanks Alberto.
>
> 73, John, G4CNN
>
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