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HR40 • 18
you wish to install the LED in your enclosure. Locating the LED immediately
above the on-off switch is ideal. The simplest way to make a neat installation
is to drill a hole just sightly smaller than the diameter of the LED. Then,
enlarge the hole a little bit at a time, just enough to let the LED be pressed in
and held firmly. The resistor may be connected to either the anode or cathode
side of the LED, but the anode must be connect to the + DC with the cathode
connected to the nearest common ground.
If you are wondering why we did not include these pennies worth of parts with
your kit , you can believe any of the following reasons: (1)We wanted to
stretch your battery budget and the current draw on the LED is about 6mA.
How long will your battery last if you leave your receiver on for a few days, just
like we leave our computers and ham gear on all the time? (2) We thought
you’d have more fun planning and installing your own lamp that glows in the
dark!