[Laser] Firefly Modulation

[Tim Toast]

Les,

You might indeed! haha... It does look like PSK modulation but I 
guess it's just sending 0's and 1's while unconscious. They're
describing it as a phase reversal like PSK I think. When awake 
and blinking normally, they describe the modulation as "more noisy" 
and difficult to analyze. Who knows what they are saying to each 
other (the bugs) if they can actually process the signals at those
rates - 586 KHz subcarrier and the sidebands at 403 and 769 Khz. 
But maybe it's all just a by-product of the light producing organs 
and not actually used for communication by the bugs. (other than 
the slow blinks which are used to attract a mate) 


--- On Sun, 1/20/13, Raymond Woodward <k3vsa at gmx.com> wrote:


From: Raymond Woodward <k3vsa at gmx.com>
Subject: Re: Firefly Modulation
To: "toasty256" <toasty256 at yahoo.com>
Date: Sunday, January 20, 2013, 1:28 PM


Now, if I could just connect some wires to one of these babies and 
get it to fly above my treeline, maybe I could do some optical
communication via PSK-31.

-Raymond "Woody" Woodward K3VSA
ARRL Public Information Coordinator for North Carolina
(an ARRL-trained Public Information Officer)

http://www.ncarrl-pio.org

Canst thou send out lightnings, that they may go and say to you, 
"Here we are?"  - Job 38:35