[Laser] test

[riese-k3djc at juno.com]

some years ago WA3USG and I built transeivers ,,, a detector fed a chip
and worked well,,, the interesting thing was to be able to hear the
clicks
from airplane blinking lights and at Dicks QTH we could hear clicking
when pointing up but could not see any lights,,, never figured that out
need to sourt through the good junk and see if I still have the reciever
was fun to see how far we could work

Bob K3DJC


On Wed, 2 Jan 2019 11:05:33 -0500 Sean Waite <waisean at gmail.com> writes:
> I'm working on some of the little eBay special laser pointer 
> transmitters.
> Using a design I got off of the Packrats, modulates the diode 
> voltage with
> a 555 timer. RX is a simple solar panel wired directly to a powered
> speaker.
> 
>