[Hallicrafters] The Halli Transistor Sistor

[David Thompson]

The first commercial amateur radio unit using transistors was the Regency 
ATC-1 converter.
W8ZR has a great picture and story on his web site.
The QST review was sometime in 1956.  QST then published a more complete 
receiver in (as iI recall) in the May 1956 issue.

The Regency worked well hooked to a decent broadcast RX such as the Regency 
base unit, the Morrow CM-1 or FTR (also used with the Morrow 5BR converter. 
Not so well to a stock auto broadcast receiver.  It worked as well as the 
5BR tube converter.  Morrow paired the XTR with the 5BR to make the MBR5 
receiver.

Dave K4JRB