QST, May 1970, p. 117.
QST, Aug 1971, p. 111.
QST, Mar 1973, p. 127.
QST, Jan 1974, p. 123.
KA40 is the same unit but without the paddle assembly.
The paddle assembly was available separately (in the same box) as the KR1. Note: This paddle was also used in the KR20.
