56C is no problem and well within our normal PA temp operating range. Even the 84C limit is a conservative number with a fair amount of headroom.
73, Eric WA6HHQ www.elecraft.com === On 1/9/2011 1:22 PM, Joe Planisky wrote: > Hi Fred, > > According to the manual, the PA drops out at 84C, so that's clearly the upper > limit that Elecraft thought was safe. I routinely see PA temperatures of 60C > - 65C when running 100% modes like RTTY, PSK31, etc. into a well matched load > for more than a minute or two. I have performed the PA temperature > calibration procedure with a thermometer that I trust. I am not overly > concerned with temps in the mid 60s. > > That said, there seems to be some variation in what people experience with > regard to PA temperature. Some folks will swear that they never see anything > over 35C - 40C. Others (like me) will report higher temps. Of course, > ambient air temperature and good air circulation play a large role, but > otherwise I don't know the reasons for the variations. > > 73 > -- > Joe KB8AP > > On Jan 9, 2011, at 11:24 AM, Fred Jensen wrote: > >> Playing around in the RTTY RU after a full effort in NAQP CW yesterday. >> PA temp @100W gets up to about 56C while CQ'ing, so I backed off to >> 80W. Anyone know how hot is too hot? >> >> 73, >> ______________________________________________________________ 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
