Behold, Dave Platt scribed on tube chassis:

An electronic (PDF) version of Edmund Laport's 1952 textbook "Radio
Antenna Engineering" is now available for free download. Details may be
found at:

http://snulbug.mtview.ca.us/books/Ra...naEngineering/

All I saw was Bit Torrent. Do you have a real link to the PDF?

--
Gregg "t3h g33k"
http://geek.scorpiorising.ca
*Ratings are for transistors, tubes have guidelines*