Very High Frequency Techniques
fgentges at mindspring.com
Tue Oct 16 20:18:29 CDT 2007
I had the good fortune to run across and acquire a pair of books
entitled "Very High Frequency Techniques" dated 1947. These books
collected a lot of the information developed about CW (as opposed to
pulse) signals during WW2. It was authored by a number of people but
was compiled and edited by Herbert J Reich.
The same Reich gave us "Principles of Electron Tubes" in 1941. That
book provided some key insights into the underlying physics of vacuum
tubes. He later authored "Functional Circuits and Oscillators" in 1961.
However, he was not Secretary of Labor under President Clinton.
This two volume set was published under the aegis of the Radio Research
Laboratory at Harvard University. That laboratory was established
during WW2 under the National Defense Research Council to give our
country the technology needed to fight and win the war.
Harvard has since specialized in producing MBAs that have demonstrated
great success at running American Business Icons into the ground with
goofy business practices. They should have stuck to radio as they were
much better at that.
Anyway, the concepts and designs of much of the VHF/UHF/Microwave gear
we have worked with over the last half century are layed out in detail.
Subsequent texts seem to assume you already have read these books and
take you forward without these valuable underpinnings.
For example two whole chapters are devoted to the principles and design
of transmission line filters. We have seen them everywhere but what a
revealing discussion here. Likewise, those butterfly resonators and
oscillators. However, they cover the complexities of IF amplifiers but
did not discover the beauty of the electrolytic tank as a pole and zero
analog design synthesis tool. We would have to wait for post-war
television engineers for this nifty technique.
If you have a chance to grab this pair, they are loaded with information
on the concepts and principles used for the first high frequency gear
developed. You can find them at Amazon on their used book list. Of
course, I will be happy to share them with AMRAD members. Careful
review will no doubt reveal how modern basement based designs might be
improved. I will try to bring them to tacos on Saturday for everyone to
ooh and aah over.
More information about the Tacos