[Laser] San Diego laser communicator activity last weekend
Kerry Banke
[email protected]
Mon, 23 Sep 2002 15:31:53 -0700
David - Thanks for sharing you experience in illuminating the scope. I'll
play a bit with that approach. It seems to me now I did try something like
that sometime back & had potentially useable results.. The equipment we're
using is capable of way beyond the 4 miles we did last night. We typically
do a 15 mile contact on Field Day as a demo. We just added narrow band
optical filters which allows daylight operation as well . Unfortunately
when we tried a daylight contact on Saturday we had no luck & found out
later the ham at the other end forgot to remove the cover from the receiver
optics! Next year we'll do several daylight contacts just to get them on
the books. It was just too hot & we had other microwave bands to try so we
didn't take time to troubleshoot the problem.
73 - Kerry N6IZW -
At 05:59 PM 9/23/02 -0400, you wrote:
>Hi.
>
>I have managed to strap an LED to the far end of my rifle sight. It only
>needs a small amount of current to be effective at night and Red seems to
>perform better than yellow / Green.
>
>Positioning can be adjusted by holding the LED with an elastic band. An
>ultrabright LED running less than 1mA will give plenty of illumination and
>will last for many hours on a couple of AA cells or a 9V battery. The secret
>is to produce just enough light for the cross hairs while not reducing the
>visibility of the target area -which probably has a large spotlamp or laser
>pointing towards you anyway.
>
>Congratulations on the 4 mile path.
>
>73
>
>David G0MRF
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