This is one oldtimer who actually used such a design. After more than 58 years I finally understand how it worked .. actually, not very well for me. Chirps and whoops were very common in those days and I can say with confidence that they were definitely acceptable and, in fact, were a characteristic of stations such as mine without the operator even knowing about the whoop. Remember, like many other novices I was using a simple regenerative receiver that could not be used for a monitor and never knew how my signal actually sounded in the other guys receiver. Even the more sophisticated superhets overloaded so easily that they did not provide a faithful reproduction of the outgoing rf.
Don K7FJ > The 6L6 keyed oscillator shown in the Flickr page is certainly a > lovingly-crafted piece of artwork, but I am a bit skeptical about the > implication that a techno-adept ham of the late '30's would have been > pleased by the chirp. After all, the 6L6 first appeared in 1936, and by > then the 'x' and 'c' of the RST/x/c reporting scheme was probably > already in use. Keying an oscillator working directly into an antenna > was understood to be a poor idea. The MOPA idea was around long before > the 6L6. There is a QST article in 1934 illustrating the general idea of > a 2-stage transmitter, and the idea was known long before that. > > John Ragle -- W1ZI > > ______________________________________________________________ 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
