[Laser] minimum frequency PSK31

[Zack Widup]

On Sun, 12 Nov 2006 TWOSIG at aol.com wrote:

> PSK31 is a system developed for radio to provide  digital communications  at 
> a conversational speed ( approximately what  a person can type ).   Typically 
> it is generated by the sound card of  a personal computer and fed into the 
> microphone input of a transceiver.
>  
> There has been some discussion of adapting it for use with light  
> communication systems.  PSK31 when used on RF has narrow bandwidth and  requires linear 
> conversion from audio to RF, but there seems to be no strong  reason to 
> continue that for light systems.  Non-linear conversion and  amplification cause 
> distortion and wider bandwidth ,harmonic rich  transmission, but since there other 
> users on other frequencies are unlikely in  the optical channel, they cause 
> no harm. 
>  

I'd like to experience a pileup using laser comm!  ;-)

73, Zack W9SZ