[BC] Co-inventor of Remote Control passes

[Mark Humphrey]

On 2/19/07, WFIFeng at aol.com <WFIFeng at aol.com> wrote:
> The man who helped invent the device that eventually led to "couch potaoes"
> has passed away.
>
> http://tinyurl.com/ytqzxu

Dr. Alder also played a major role in the development of FM
broadcasting.  He held the patent for the Phasitron exciter design
(one of GE's engineers patented the tube itself) and also invented
several stereo FM circuits.

Here's the Phasitron paper he presented to IRE:
http://www.w9gr.com/adler.html

As most of you know, the FCC-approved stereo FM system was jointly
developed by GE and Zenith.  The difference was that Dr. Adler of
Zenith viewed it as a time-division-multiplex scheme (L and R
alternately sampled at a 38 kHz rate) while Tony Csicsatka at GE used
a matrix and balanced modulator to generate the L-R subcarrier.

He was undoubtedly a brilliant engineer.

Mark