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To: JW@KSC who wrote (30469)	2/4/1998 6:12:00 PM
From: polarisnh	Respond to of 31386

Thanks for the help, Jim! As I indicated, I am not an expert but I do try to pitch in where I can. Steve

To: JW@KSC who wrote (30469)	2/4/1998 6:26:00 PM
From: Larry Brew	Respond to of 31386

jim, <<I'll check out those locations -- I can probably handle them > The 1000mhz chip is in 0.25 according to announcement. This means that the 0.18u shrink is probably in the works. I'll let you estimate speed increase from .25 to .18. Won't be direct due to features on the die that can't be shrunk. The next technology shift will begin at 0.1u. Not sure if it's even silicon?? Think of those speeds! I am familiar with the 4khz voice rolloff. Worked on the USR 28.8k and 56k modem chips for TI. Capacitive filters and diff amp component matching was very critical. I'd been in the micro world so long, some of the macro constraints had left me. Not being a designer, but working on device yield improvement tended to focus me on circuit internals such as filter rolloff, integral and differential linearities and such, as related from design to processing capabilities. An FYI that dates me. I was on the recovery team in Air Rescue Service for Mercury 4. Secondary location. It was tough as we were in Australia. :-) After the service from 68 - 69, I worked for NASA in Houston on attitude control systems. A huge air bearing table to simulate space. Compressed air bursts to simulate attitude control jets. Short job. NASA was too much like being in the military. Larry -- Keep punching those holes in space!!!

To: JW@KSC who wrote (30469)	2/4/1998 6:50:00 PM
From: Larry Brew	Respond to of 31386

Hey jim, << just checked the 1st site >> You may not be a communications engineer, but your understanding of FFT's, RFI, etc., certainly suggests engine-neer or fisics to me. :-) With this knowledge you must understand it's going to be more than a new modem at the office, as they would like one to believe. Speaking of noise on lines. One of our big problems is birds pecking through the insulation. As I've told pat, the US West repairman says: "Sorry, no new lines except for new homes." Concerns me about USW longterm strategy. So much smoke, yet so few trees. Larry