[Laser] ATV laser DX record

James Whitfield n5gui at cox.net
Fri Mar 23 21:53:01 EST 2007


>From Yves  F1AVY :

>With 10  mW they succeed a 70 Km QSO with B5 TV pictures.

Thank you for passing the information along.

I am not sure what B5 TV pictures are.  At first I thought B5 might be an
emmission code for independent sideband amplitude modulation of images.  But
that does not seem likely that they are describing the laser output as
having independent upper and lower sidebands.  Rather than speculate about a
sub-carrier or modulation scheme, I thought I would ask if you could explain
it if you can.

I was going to show the website to a co-worker who speaks german, but he
seems to have started the weekend a day early.

James
N5GUI

.





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