[Laser] First test of sending data via fluorescent or High Pressure Sodiu...

[F1AVYopto at aol.com]

Kerry
Very  good work with your beacon.
As you divide the frequency by two to compensate  the "two light bursts for 
one cycle", Laserscatter is the good program  because the predivide option you 
can chose but Lasercatter  needs very good audio cards quality (frequency  
accuracy) 
The 62.5-67.5  Hz range seems very close to the 60 Hz mains that gives a 
strong 120 Hz  line 5 Hz to 15 Hz near your optical signal. 
It could be a  problem at low level ?
JASON can be also used with your "by two divider" with  the right F for TX 
frequency. 
The JASON  frequency shift will be divided by two by your divider but will be 
multiply  by two by the lamp. The beacon message must be included between the 
characters {  }.
With this pattern JASON will send continuously the same message as long  you 
like. 
JASON works  well again with very common audio card or low cost USB sound 
adaptor with  more than 1 Hz frequency error at 100 Hz.  
Have good experiments.
73 Yves