[NJARC] Broadcaster kudos etc.

Magoun, Alex amagoun at davidsarnoff.org
Tue Jul 7 21:06:08 EDT 2009


Marv, Dave, and Ray,

Another bang-up job on the newsletter!  Microwaves and antique TV prices seem to have nowhere to go but up, and TV history has nowhere to go but out.  I supplied the 6th IMS historical section with some goodies in Philly because a Sarnoff Corporation VP spoke on RCA's microwave history, but not in the classy way that Ray showed off Camp Evans.  No wonder he snagged an invite to the Harvard Club!

Regarding the BC-412 scope and the need to change to the white phosphor 5BP4 CRT for decent television viewing: one of the challenges in making radar a practical system was the need for a bright display with a long persistence phosphor-that is, one that glows after electronic stimulation until the radar and electron gun beams refresh the display again.  TVs need a short-persistence phosphor to prevent image lag.  Humbolt Leverenz led the effort at RCA Labs during the war on long-persistence green phosphors, the human eye being most sensitive to green, and transferred the development of the long-persistence phosphor to the British.  Of course, since radar was top secret, he was not allowed to return to the U.S. with the paper that he'd written on the subject.

Because of last weekend's holiday, the RCA Labs first-Friday poker game was moved to the second Friday, and consequently I can't indulge myself in Professor Littman's awesome show-and-tell.  My upcoming return to Shanghai to spend time with my fiancee and her family will prevent my attendance at the Summer Swap Meet, so enjoy it without me!

Cheers,

Alex



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