[Amps] QEX May/June 2014 amplifier article

MU 4CX250B 4cx250b at miamioh.edu
Sat May 17 10:54:55 EDT 2014


I was interested in reading about new high-power RF transistors, but I
found that particular article so disorganized and confusing that at
the end I had no idea what I had read about. I could make no sense of
it at all.
Jim

Sent from my iPhone

> On May 17, 2014, at 8:39 AM, Alan Ibbetson <alan at g3xaq.net> wrote:
>
> May I timidly ask if anyone here can fathom the purpose of the article on page 14 of the current ARRL QEX magazine? It describes an amplifier using a high voltage IGBT which is operated for 600 cycles of 20MHz RF once every 50ms. The magazine uses the by-line "A Forum for Communications Experimenters" but I can't see what use this amplifier is for communications. Do I just lack imagination?
>
> Of course, if I was interested in building an over the horizon radar then this article might seem more relevant.
>
> 73, Alan G3XAQ
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