KW Days

Southgate News reminds us that KW Days are held in early January. At university in the late 1960s we had a KW2000 and later a KW2000A and linear. Probably my first experiences as a transmitting amateur were with these rigs. Looking back, we had some good times and good QSOs. Remember "phone patches" with USA stations?

See http://southgatearc.org/news/2017/december/kw-days.htm#.Wj4lBUx2tMs

15kW HF PA - definitely not for a QRP man!

A friend sent me this link http://www.dc9dz.de/en/index.html which shows the design and construction of a 15kW HF PA circuit for the amateur bands based around the Eimac 4CX10000D valve. Although I have no real interest in very high power and I do not expect to hear this on the air (please no!), it is a rather elegant piece of radio engineering.