{"id":1348,"date":"2006-09-20T16:58:00","date_gmt":"2006-09-20T16:58:00","guid":{"rendered":"http:\/\/www.ni0l.com\/?p=1348"},"modified":"2006-09-20T16:58:00","modified_gmt":"2006-09-20T16:58:00","slug":"keep-your-ic-706mkiimkiig-cool","status":"publish","type":"post","link":"https:\/\/www.n0zb.com\/index.php\/2006\/09\/20\/keep-your-ic-706mkiimkiig-cool\/","title":{"rendered":"Keep your IC-706\/MKII\/MKIIG Cool!"},"content":{"rendered":"

Phil Salas AD5X<\/a> (ad5x@arrl.net) http:\/\/www.ad5x.com
\nThe ICOM IC-706 series of radios is very popular for mobile and portable operation. However, a lot of heat is generated in this small package, and with moderate-to-heavy use, the radio and heat-sink can get quite hot. The way around this is with additional airflow around the heat-sink. This project had three goals 1st, solve the heat problem. 2nd, the solution should be unobtrusive. And 3rd, make no mechanical changes to my IC-706MKIIG. There are many surplus computer fans available for very little money, so I figured that there had to be one that was perfect for adding to the IC-706G. I wound up using a 12-volt 40mm square fan available from All Electronics (www.allelectronics.com, part number CF-181 @ $3 each). Now, how to mount it to the IC-706G heat-sink? The answer turned out to be pretty simple. Refer to photos Fan & Anchors, Back View, and Top View. I used plastic wall anchors to hold the fan in place. The wall anchors I used are 1-1\/4 long and use #10 or #12 screws. I used 1-1\/2 long #10 machine screws for mounting. The 40mm fan mounting holes passed #8 screws, so I had to drill them out slightly to take #10 screws. I also needed to cut off about of the length of the wall anchors. Position the fan so that it blows air away from the IC-706 heat-sink, then tighten the screws.<\/p>\n

I took the 12-volts from the IC-706 antenna tuner connector. I made a cable extension to let me pick off the +12V but still permit connecting an antenna tuner if desired. The maximum current available at this connector is one-amp. To protect the radio in case of a fan short, I connected a 100-ohm 1\/2-watt resistor in series with a fan lead. The resistor drops the fan voltage in half, which gives a much quieter installation, yet plenty of air is still moved. The resistor is covered with heat-shrink tubing in the photo. How does this work? Absolutely outstanding. My IC-706MKIIG runs cool even during heavy use. Other size fans can obviously be used, though a 50mm square fan is about the largest will fit (a 50mm fan is actually shown in the Fan & Anchors photo). This 40mm fan is a perfect fit, though.<\/p>\n

Click to access Fan706RevA.pdf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Phil Salas AD5X (ad5x@arrl.net) http:\/\/www.ad5x.com The ICOM IC-706 series of radios is very popular for mobile and portable operation. However, a lot of heat is generated in this small package, and with moderate-to-heavy use, the radio and heat-sink can get quite hot. The way around this is with additional airflow around the heat-sink. This project … Continue reading “Keep your IC-706\/MKII\/MKIIG Cool!”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-1348","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9vUOZ-lK","jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/posts\/1348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/comments?post=1348"}],"version-history":[{"count":0,"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/posts\/1348\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/media?parent=1348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/categories?post=1348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.n0zb.com\/index.php\/wp-json\/wp\/v2\/tags?post=1348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}