Articles written by: Jack Smith K8ZOA (SK)

Jack Smith, K8ZOA (SK), was the founder of Clifton Laboratories and a long-time contributor to the Ham Radio community.

a series of coaxial ferrite insulators
Clifton Labs

Data on Ferrite Transformers

(Editor’s Note: The following article is from the archives of experimenter, inventor, friend of the Ham Radio community, and founder of Clifton Laboratories, Jack Smith, K8ZOA (SK).) In working on a […]

homemade ferrite core transformer
Clifton Labs

Designing an Easy Broadband RF Transformer

(Editor’s Note: The following article is from the archives of experimenter, inventor, friend of the Ham Radio community, and founder of Clifton Laboratories, Jack Smith, K8ZOA (SK).) In working on an […]

Band Reject filter circuit board
Clifton Labs

Inductor Selection for an AM Band Reject Filter

(Editor’s Note: The following article is from the archives of experimenter, inventor, friend of the Ham Radio community, and founder of Clifton Laboratories, Jack Smith, K8ZOA (SK).) One project I’ve been […]

circuit boards inside a ham radio
Clifton Labs

Replacing the Memory Backup Battery in a Harris RF-590 Receiver

(Editor’s Note: The following article is from the archives of experimenter, inventor, friend of the Ham Radio community, and founder of Clifton Laboratories, Jack Smith, K8ZOA (SK).) I recently acquired a […]

Transformer distortion graph
Clifton Labs

Non-Linear Xformer Behavior

(Editor’s Note: The following article is from the archives of experimenter, inventor, friend of the Ham Radio community, and founder of Clifton Laboratories, Jack Smith, K8ZOA (SK).) I’ve written about linear […]

ham radio test equipment on workbench
Clifton Labs / Technical Articles

Audio Transformer Measurements and Modeling

(Editor’s Note: The following article is from the archives of experimenter, inventor, friend of the Ham Radio community, and founder of Clifton Laboratories, Jack Smith, K8ZOA (SK).) This page presents […]