description Heathkit IG-28 Overview
The Heathkit IG-28 is a build-it-yourself electronic test instrument known as a color bar and dot generator. Heathkit sold it as a kit for producing television test patterns used when servicing and aligning color television receivers. It belongs to the company's line of hobbyist and service equipment, so it is relevant to collectors of vintage electronics and technicians studying analog television repair.
help Heathkit IG-28 FAQ
What patterns can the Heathkit IG-28 generate?
The IG-28 can produce dots, crosshatch, horizontal and vertical lines, color bars, shading bars, and a clear raster. Heathkit describes standard 9 x 9 displays plus a 3 x 3 version of several patterns, for 12 selectable patterns plus raster. ([Heathkit catalog](https://www.worldradiohistory.com/Archive-Catalogs/Heathkit-Catalogs/Heathkit-1972-810-72.pdf))
What was the Heathkit IG-28 used for?
It was a color bar and dot generator for servicing and aligning color and black-and-white television receivers. Its patterns help with convergence, linearity, purity, and color-circuit checks. ([Heathkit catalog](https://www.worldradiohistory.com/Archive-Catalogs/Heathkit-Catalogs/Heathkit-1969-800-93-summer.pdf))
Does the IG-28 output RF as well as video?
Yes. Its specifications describe variable RF output for television channels 2 through 6, plus composite video and separate sync outputs. That combination allowed a technician to inject test signals at different points in an analog TV receiver. ([Heathkit catalog](https://www.worldradiohistory.com/Archive-Catalogs/Heathkit-Catalogs/Heathkit-1972-810-72.pdf))
Can I connect a Heathkit IG-28 directly to a modern HDMI television?
No. The IG-28 is an analog television service instrument built around channels 2-6 RF and composite video, not HDMI or modern digital video. Using it with a modern display would require suitable analog-to-digital conversion and a display that accepts the resulting signal. ([Heathkit catalog](https://www.worldradiohistory.com/Archive-Catalogs/Heathkit-Catalogs/Heathkit-1972-810-72.pdf))
explore Explore More
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
