Note
QST, Jan 1971, p. 115.
QST, Jul 1972, p. 120. (HR-2A)
QST, Jul 1973, p. 127. 1973–1978 (HR-2B)
The HR-2(A)(B) is designed for 12 VDC operation.
Variations include the HR-2MS, which added a scanning function (also for 12 VDC operation), and the HR-2S, which was the same as the HR-2MS, but designed for 120 VAC operation. (QST, Aug 1972, p. 116)
An option included the MA-8 four-inch remote speaker.
"Close-Out" sale in Jul 1978.
QST, Jul 1978, p. 165.
References
Brief description. Electronics World, Jan 1971, p. 82.
Brief description (HR-2B). Popular Electronics, Aug 1973, p. 111.