David, The holes only vent the attenuators, the heat sink for the output module is the bottom plate. Whether the attenuators need venting or not depends on your drive level - the attenuators are not used at all for 1 mW input, so if that is what you are using, rest easy.
I am curious about why your top cover does not have the holes. It is possible that you received an incorrect cover. If this was a recent purchase, things like that are covered under warranty, contact [email protected] with a brief explanation and you may receive the right cover. 73, Don W3FPR David Pratt wrote: > I have just been reading the Transverter XV50, XV144, XV222 Assembly > Manual Rev B, March 2006 and notice on page 2 that the top cover has > ventilation holes drilled in it. My XV144 does not have any ventilation > holes. > > Should I drill some vent holes in the top cover, over the four > metal-oxide resistors? My XV144 does get hot and sometimes trips out if > I transmit more than a few minutes. (Presumably F1, the resettable > fuse.) > > As there is space on the RF Board for a fan, similar to that used on the > XV432, I am wondering whether there would be any advantage fitting a > 40mm x 40mm fan to the XV144? Presumably, I would need to drill > air-flow holes in the PCB and also in the bottom cover. > > 73 > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.716 / Virus Database: 270.14.104/2560 - Release Date: 12/12/09 > 02:38:00 > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
