[Laser] 5mw laser tranceiver kit

[Mike]

To All,

Here is an example of a very powerful LED, 850nm, etc.. Ebay has several,
here's an example: 330357511250. I'm not sure if this is the way to go when
you try to focus it, but hey, that's why we expermint.

Mike C. 

-----Original Message-----
From: laser-bounces at mailman.qth.net [mailto:laser-bounces at mailman.qth.net]
On Behalf Of Tom Becker
Sent: Saturday, September 25, 2010 11:33 AM
To: Free Space LASER Communications
Subject: Re: [Laser] 5mw laser tranceiver kit

  > ... http://www.aladal.net/toast/5mwkit1.jpg

Tim, I looked at your schematic and was struck by the irony that the
transmitting diode could be either a laser pointer - or an LED.  Maybe Chris
would be happy to see a DP3T switch on the kit - to demonstrate the
advantage and disadvantage of each radiator - and, perhaps even different
receive diodes.

How is this different from my second CW transmitter, a Heath DX-20 (the
first was a homebrew hand-wound 6V6 pine-chassis, from the '56 ARRL
Handbook, I think), which offered five-band switching?  I learned quickly
that 15 meters, at the time, did not work as well as 40 did, and 80 was
cluttered with summertime QRN.  I learned that advantage by myself, given
the opportunity to try both.

Tom
http://www.ustream.tv/channel/bowcam
http://www.ustream.tv/channel/cape-coral-marine-radio VHF
http://67.207.143.181/vlf9.m3u VLF


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