[ARC5] Cool but Pointless

[Bruce Long]

Useless but it established a precedence and got people thinking


      From: Michael Bittner <mmab at cox.net>
 To: Jay Coward <jcoward5452 at aol.com>; k1lky68 at gmail.com; vk2bcu at operamail.com 
Cc: arc5 at mailman.qth.net
 Sent: Tuesday, February 16, 2016 3:52 PM
 Subject: Re: [ARC5] Cool but Pointless
   
 The book "Radio for the Millions" shows a homebrew "Light-Beam Transmitter"on pages 179 - 181.  The transmitter is a flashlight modulated by abuzzer.  The receiver uses a photo tube with a 1D8GT amplifier for earphonereception.  Published by Popular Science in the 1940s.  I think copiesare availble on-line.  Mike, W6MAB--
 ----- Original Message -----  From: Jay Coward via ARC5  To: k1lky68 at gmail.com ; vk2bcu at operamail.com  Cc: arc5 at mailman.qth.net  Sent: Tuesday, February 16, 2016 9:57 AM Subject: Re: [ARC5] Cool but Pointless 
I remember a Popular Electronics article years ago on how to make your own laser comms using gas tube lasers and small telescopes along with mod/demod that you had to build. Jay


 -----Original Message-----
From: Roy Morgan <k1lky68 at gmail.com>
To: Leslie Smith <vk2bcu at operamail.com>
Cc: ARC-5 List <arc5 at mailman.qth.net>
Sent: Mon, Feb 15, 2016 2:24 pm
Subject: [ARC5] Cool but Pointless


On Feb 15, 2016, at 2:52 PM, Leslie Smith <vk2bcu at operamail.com> wrote:…
Re: [ARC5] The International System of Units (SI)
> ...
> In Tasmania (VK7 is a small island south of the Australian mainland) a
> group has been experimenting with long range optical communication. ... they got communication (by light)
> from Hobart to Launceston. That's about 120 miles. … That's pretty
> cool, in my book. At the same time it was quite pointless. 

Leslie,





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