Hallicrafters HA-4

Object/Artifact

-

Radio Alpha

Image: Joe Veras, K9OCO

Image: Joe Veras, K9OCO

Name/Title

Hallicrafters HA-4

Description

Solid State Electronic Keyer

Category

Keys, Electronic

Made/Created

Manufacturer

Hallicrafters

Date made

1961 - 1963

General Notes

Note

QST, Jun 1961, p. 1. QST, Feb 1963, p. 1. Replaced the HA-1. The HA-4 was also referred to as a TO Keyer.