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Your RF Cafe
Airplanes and Rockets:
A pleasant surprise at the International Microwave Symposium (IMS) 2009 (also see IMS2011) show in Boston was the "Historical Booth." It had a very nice display of items from the early days of radio and radar. According to the IMS 2009 website, the items are "memorabilia from the first IMS held in Boston 50 years ago." Most displays were glass cases, so it made getting useful photographs difficult because of glare and reflections. You will see some of that in the images here. More information can be found on the National Electronics Museum website. Barney Fife, seen in the first photo, was dutifully guarding the displays. After seeing what was included, I was glad that the show organizers decided to place him there.
In retrospect, I should have taken many more photographs of the displays and suffered through attempting to remove the glare and reflections, because a lot (maybe all) of this stuff cannot be found documented anywhere on the Internet. One item in particular I wish I had photographed was what appeared to be a specially formed section of waveguide (maybe C-Band based on size) that had been routed out of a block of wood, and then the cavity was lined with copper foil.
We've come a long way, baby!
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Please take a few more minutes to read my report on the rest of the IMS 2009 show, "RF Cafe Goes to Beantown."
Large display of patents, photos, manuals, and an example of the VT-158 tube.