[Laser] Mystery Modulated Light

[Zack Widup]

Possibly an LED light? Some of them do not run DC on the LED, but
rather pulse it.

73, Zack W9SZ


On 6/27/12, steve kavanagh <skavanagh73 at yahoo.ca> wrote:
> I was scanning around last night with my new optical receiver and was rather
> surprised to get a strong clean tone around 1 kHz coming from an apartment
> building about 200 metres away.  I checked tonight and it is there again.
> This time I was able to get the computer connected and found the modulation
> frequency is 1265 Hz (according to Spectran), with a number of harmonics
> present at 2530 Hz, 3795 Hz, etc.
>
> Any guesses as to what might be emitting this modulated light ?
>
> 73,
> Steve VE3SMA
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