[Laser] San Diego laser communicator activity last weekend

Mon, 23 Sep 2002 10:22:44 -0600

Some scopes have illuminated reticles.
Look in the catalogues.

Kirk

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Kerry Banke
Sent: Monday, September 23, 2002 9:21 AM
To: [email protected]
Cc: [email protected]
Subject: [Laser] San Diego laser communicator activity last weekend

Chuck (WB6IGP) and I made a 4 mile (DM12LT to DM12 MS) laser communicator
contact last evening just  for fun  as part of the annual ARRL 10 GHz and
up contest.  Chuck set up his unit in my back yard and I drove to Cowles
Mt. about 4 miles away and hiked maybe 20 minutes until we could see each
other.  We used flash lights to initially locate each other and then zeroed
in the lasers using audio feedback over  2 meter handi-talkies. Probably
the biggest issue we  found is that the rifle scope cross hairs are not
lighted and cannot be seen against a black background at night.  We're
running FM on our laser communicators so once everything is aligned it
sounds just like coming over the liason radio except full duplex.  Initial
alignment is always  a real issue before starting operation especially if
things have been banged around during contest travel.The contact this  year
was done in a bit too much of a  hurry but  next year we'll do alignment of
the receiver, laser and scope optics after we set up on both
ends  before  making contact.  If there are any suggestions for lighting
the scope cross hairs, we'd be interested in hearing them. We're using
laser pointers with about X7 beam expanders and 4" receive optics.
73  - Kerry N6IZW -

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