[AMRadio] Physical Reality of Sidebands


John Coleman, ARS WA5BXO wa5bxo at pctechref.com
Thu Jan 20 01:15:02 EST 2005


Hi again Larry.
	Yes, all this brings back old memories.  I quit the TV repair
business back in 1986 (I Think).  Anyway started doing PC work and now I
wish I could sometimes just run away and play with my toes in sand. HIHI

CUL, 73
John, WA5BXO

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of lwill at voicenet.com
Sent: Wednesday, January 19, 2005 7:48 AM
To: Discussion of AM Radio
Subject: RE: [AMRadio] Physical Reality of Sidebands

Hi John,

Yep I agree on all this.  Actually I and Q as I remember was a Hazelteen
(sp) 
patent that RCA had to buy.  the R-Y B-Y detector was developed by RCA
later to 
avoid the license fees from Hazelteen.

Growing up into color TV near RCA's plants and Sarnoff was ben a bif
help to me on 
early undestanding (college years0 of how color worked.

I actually worked with RCA Sarnoff while DE at NJ Network on their first
HDTV analog 
system which used yet another subcarrier in the imaginary plane at about
3 mhz to 
add the side panels for the wide screen.

Amazing math tricks are used in all this.

Kepp up the good work.

Larry








More information about the AMRadio mailing list

This page last updated 12 Dec 2017.