As an aside on the TR-7 (one of my all-time favorite radios), Drake generally limiting output power to about 120W (adjusted on 20M) to keep the PA healthy long term. While the PA is capable of 150-200W output, it was certainly not recommended.
As to cooling, there was an optional fan to cool the PA for modes with high duty cycle (RTTY, etc). Grant NQ5T K3 #2091 KX3 #8342 > On Jan 13, 2019, at 2:14 PM, ab2tc <[email protected]> wrote: > > Hi again, > > True, but the TR7 is all solid state, including the finals. See here: > > http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-01.htm > > According to that article Drake claims 130-150W output for bands at above > 20m and 60-100W on 80-15m. > > Boy, is that transceiver ever jam-packed! Wonder how it does cooling-wise. > > AB2TC - Knut > ______________________________________________________________ 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]
