Lightning Arrestors

These are two simple lightning arrestor designs.  Antennas should always be disconnected from radios and grounded before lightning storms, and these devices are not substitutes for doing so.  However, they will provide some measure of protection in case you forget to do so.  And of course, nothing will provide total protection in case of a direct strike.

Design #1 consists of a simple air gap provided by two bolts that are filed down into points.  The plastic box is water tight to prevent moisture from shorting out the air gap.  Make sure the gap is around 1/4″ apart, as too wide a gap will not allow the spark to jump across, and if the bolts are touching the RF will be shorted to ground.

Design #2 consists of two SO-239 jacks mounted on a metal chassis, with a sharpened bolt providing the air gap to the center conductor.  It is necessary to use a metal box to minimize signal loss.  Make sure it is watertight.

Info dari Laman: Lightening Arrestor

This entry was posted in Pembelajaran. Bookmark the permalink.

Leave a Reply

Please log in using one of these methods to post your comment: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s