I believe they are only rated at 110 Watt max, I've never seen anything rated at 120 watts. A mobile heat sink is rated for something like a 20/80 duty cycle, Tx/RX respectively. I can tell you from experience, that you can run it reliably at around 50-60% of full power IF you give it LOTS of Efficient cooling. I run three high speed high output 4.5 inch muffin fans on my repeater; with the radio horizontal have 2 fans directly below and blowing a high volume of air up through the heat sink. I added a third fan to feed air into and an exhaust from the bottom of the case directly under the PA transistor mounting studs. Make sure fans come on immediately with PTT and they should continue to run until several minutes following repeaters final unkey.
Rob K7EI -----Original Message----- From: Chris Peterson [mailto:[EMAIL PROTECTED] Sent: Friday, January 28, 2005 3:02 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] VHF GE Mastr II mobile question Hi all, How much power can a 120W Mastr II mobile put out and safely be run continuous duty? Also, what are people doing for added cooling on these, if anything? Thanks, Chris Yahoo! Groups Links ___________________________________________________________________ The information contained in this message and any attachment may be proprietary, confidential, and privileged or subject to the work product doctrine and thus protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately by replying to this message and deleting it and all copies and backups thereof. Thank you. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
