>> Well, there are many many very simple ways that do not require 
>> sophisticated equipment, beginning with altering the repetition rate, 
>> frequencies, speed, introducing warble, etc.

> Your examples are not carrier waves...

Actually, I am suggesting that the obvious bird songs could be the carriers 
and be modulated with the actual message. (Play eerie music here).  There is 
no lower bound to carrier frequencies.  As a Navy guy, you might recall some 
VLF stuff.

> You can also look at the songs of the humpback whales which convey a lot 
> of information, just we do not understand it all.

OK.  Agreed, but, BTW they were asking about you the other day.

> I would postulate that the more complex the organism,  the more complex 
> will be the song or language. Sort of fits with the central processor: the 
> more ram, the more it can do.

We're really reaching here, but I'm with you.  After all, we are 
hypothesizing.  Next thing you know we'll be saying bees can play cards --  
or point to food sources.

> There is nothing stopping a song from being a short burst and the receptor 
> able to decipher those bursts. I believe some bats do that, but will 
> gladly bow to those more knowledgeable. In essence, I think we already 
> have what you are looking for all around us. Except FM carrier waves. Too 
> complex and too difficult to encode and decode.

Leave it to those uppity primates. They do it all the time, for no 
discernable useful purpose. 

******************************************************
* Full guidelines for BEE-L posting are at:          *
* http://www.honeybeeworld.com/bee-l/guidelines.htm  *
******************************************************