Seems like this discussion would be functional if it were ways to quiet the fans without compromising the efficiency of the cooling.
Chuck Jack KE9UW Sent from my iPhone, cjack > On Aug 17, 2018, at 7:13 PM, Fred Jensen <[email protected]> wrote: > > Yes. Electricity cost to generate the RF that earns the revenue is a major > part of the broadcast station budget. Not so much for amateurs. Since FM is > constant envelope modulation, it makes sense it would have a lower overall > efficiency. Even Rush Limbaugh has to take a breath occasionally on AM ... > it makes no difference on FM. [:-)) > > 73, > > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > >> On 8/17/2018 3:45 PM, W2xj wrote: >> Today in broadcast we generally rate transmitters by AC in to RF out. For AM >> transmitters that figure is in the low 90 percent range and the current FMs >> run at about 74% AC in to RF out. >> >> > > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
