[NJARC] Hedy Lamarr (again)

[David Sica]

Jim,

You are likely (surely?) correct.  That's one thing I like about this
group, there's always a real engineer around to correct what we shade-tree
engineers think we know!

-- Dave


New Jersey Antique Radio Club

On Mon, Nov 9, 2015 at 3:42 PM, <antqradio at sbcglobal.net> wrote:

> Just remember
> Reply = Poster
> Reply All = Everyone
>
> _________________________________________________________
>
> I could be wrong on this but I think "frequency hopping" is a very
> different animal then "spread spectrum."
>
> The former is used in cellphones with a constant "bandwidth" on a step
> changing carrier frequency assigned by the local cellphone tower control
> computer and the latter was Lamarr's contribution, essentially a very wide
> bandwidth and hopefully undetectable signal.  Perhaps some wireless
> telephones used in the home use spread spectrum but not cellphones, at
> least not to my knowledge.
> Jim
>
> ------------------------------
> *From:* David Sica <dave.sica at njarc.org>
> *To:* "njarc at mailman.qth.net" <njarc at mailman.qth.net>
> *Sent:* Monday, November 9, 2015 2:01 PM
> *Subject:* [NJARC] Hedy Lamarr (again)
>
> Today's Google Doodle is in honor of Hedy Lamarr.    Known in her time as
> "the most beautiful girl in the world" she was also an inventor and held
> the patent for, among other things, the spread-spectrum technology
> underlying our present-day cell phone system.
>
> http://www.google.com/doodles/hedy-lamarrs-101st-birthday
>
>
>
>
> Just remember
> Reply = Poster
> Reply All = Everyone
>
> _________________________________________________________
>
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