Where high temperature has been a problem, I have enclosed the AP in a metal water tight (NEMA 3 or 4) box with a metal shield over each surface exposed to direct sunlight. The sheet metal shields are separated from the box by an half-inch air gap. Unshielded, a gray metal box I tested showed a 40 degree F temperature rise just from being in direct sunlight. A double layer shield-air gap-shield-air gap-enclosure would work even better. The metal box should be around 10 inch X 10 inch X 4 inch ( Home Depot has them for $21) or bigger to allow internal air circulation and heat transfer through the metal walls. A 12 volt fan mounted inside would help stir the air, promoting transfer of the 15 watts or so to the exterior air via the metal enclosure walls. If possible, move the power supply outside the enclosure. The side of the metal shields facing the box should be light colored or silver to reduce heat transfer into the box by radiation. Also, the box-facing side of the shield could be insulated with foam-core but it tends to warp.
Regards, Loren Zemenick -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Christopher Snell Sent: Monday, August 11, 2003 12:43 PM To: [EMAIL PROTECTED] Subject: [BAWUG] Building the Ultimate Enclosure Hi, I'm going to be placing an AP and antenna on a (very) hot roof in San Antonio, TX. I'm concerned that the heat is going to melt my D-Link equipment. What's the best way to put this AP on the roof? Has anybody put an AP in a very hot location? If so, what kind of enclosure did you construct and how was it ventilated/insulated? I'm concerned about temperature *and* moisture control. thanks, Chris -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
