CELLNET DATA SYSTEMS INC

FY: Dec 31 1999

Q: Sep 30 1999

Q: Jun 30 1999

Q: Mar 31 1999

FY: Dec 31 1998

Q: Sep 30 1998

Q: Jun 30 1998

Q: Mar 31 1998

FY: Dec 31 1997

Q: Nov 14 1997

Q: Jun 30 1997

Q: Jan 1 1997

FY: Dec 31 1996

Q: Nov 14 1996

3,7

2,3,7

3,7

3,7

5,7

5,7

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

No description available

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus filed under Rule 424(b)(1)

Registration statement under Securities Act of 1933 (amendment)

No description available

No description available

Registration statement under Securities Act of 1933

Prospectus Supplement with Pricing Information

Registration statement under Securities Act of 1933

Prospectus Supplement with Pricing Information

Prospectus Supplement with Pricing Information

Prospectus Supplement with Pricing Information

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

MORGAN STANLEY

MORGAN STANLEY DEAN WITTER & CO

MORGAN STANLEY DEAN WITTER & CO

EDWARDS WILLIAMS C

BRUDOS ALAN R

MORGAN STANLEY DEAN WITTER & CO

ODYSSEY PARTNERS LP

CAPITAL RESEARCH & MANAGEMENT CO

PROVIDENCE MEDIA PARTNERS L P

ODYSSEY PARTNERS LP

ODYSSEY PARTNERS LP

PROVIDENCE MEDIA PARTNERS L P

EDWARDS WILLIAMS C

ODYSSEY PARTNERS LP

COOK PAUL M

Post-effective amendment filed solely to add exhibits