[Laser] Optical DX Records

Chris L vocalion1928 at hotmail.com
Sat Apr 2 09:39:34 EST 2005


   Dear John,

   Yes you did, I'm afraid.

   At  Mount  Barrow  we had Jason Reilly VK7ZJA, Joe Gelston VK7JG, Phil
   VK7JJ, Dave VK6YA/7 as well as myself operating.

   At Mount Wellington, 104 miles to the South the operators were Dr Mike
   Groth VK7MJ, Justin VK7TW and Jamie VK7KEG operating.

   There  were  not  just  two amateurs operating - there were seven! The
   relevant  body  to  us  in  Australia  is  the  Wireless  Institute of
   Australia,  not  ARRL,  and  the  WIA  appears  to  accept the record.
   Coherent light cannot remain coherent through a turbulent atmosphere -
   so  the  'coherency'  requirement  says  a great deal about the ARRL's
   ignorance of atmospheric physics in setting that requirement.

   As this  is all  on the web page you claim to have read, is this a leg
   pull?

   Otherwise, best wishes,

   Chris Long and Mike Groth VK7MJ.


   >From: "John Matz" <Jematz at megsinet.net>
   >Reply-To: Free Space LASER Communications <laser at mailman.qth.net>
   >To: "Free Space LASER Communications" <laser at mailman.qth.net>
   >Subject: Re: [Laser] Optical DX Records
   >Date: Thu, 31 Mar 2005 01:40:59 -0600
   >
   >I reread some of the webpages.  Maybe I "misspoke" hi hi.
   >JEM
   >----- Original Message -----
   >From: "John Matz" <Jematz at megsinet.net>
   >To: "Free Space LASER Communications" <laser at mailman.qth.net>
   >Sent: Thursday, March 31, 2005 1:10 AM
   >Subject: Re: [Laser] Optical DX Records
   >
   >
   > > Hi
   >  >  I  think Chris has not claimed his contact as a world record ...
   Chris is
   >not
   >  >  a  ham,  so the ham community won't recognize it ... he used LED
   sources,
   >not
   > > lasers which the ARRL wants in its "coherency" requirement ... and
   it is
   >the
   > > longest distance contact only in that part of the world (Australia
   et al.)
   > > ... but it's still neat !!!
   > > John Matz KB9II
   > > ----- Original Message -----
   > > From: "steve kavanagh" <skavanagh73 at yahoo.ca>
   > > To: <laser at mailman.qth.net>
   > > Sent: Wednesday, March 30, 2005 8:05 AM
   > > Subject: [Laser] Optical DX Records
   > >
   > >
   > > > There seems to be some lack of consistency in optical
   > > > DX record tracking.  Chris Long's new web page (an
   > > > interesting read !) quotes a previous red light record
   > > > of under 100 km, while W5LUA at www.ntms.org lists a
   > > > 192 km QSO as a North American red light record, and
   > > > G3PHO
   > > >
   > > > (http://www.g3pho.free-online.co.uk/microwaves/index.htm
   > > >
   > > > gives a distance of a little over 100 km as a world
   > > > record.
   > > >
   > > > 73,
   > > > Steve VE3SMA
   > > >
   > > >
   > > >
   > > >
   > > >
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