Note
QST, Sep 1968, p. 155. (teaser ad)
QST, Dec 1968, p. 145. (teaser ad)
QST, Jan 1969, p. 123. (teaser ad)
QST, Apr 1969, p. 133. (teaser ad)
CQ, Mar 1969, p. 11. (full page)
QST, May 1969, p. 117. (full page)
QST, Nov 1969, p. 113. (inside photo)
QST, May 1970, p. 144. (Good photo)
QST, Dec 1970, p. 170. ("now better than ever" -- An improved version with the same model number. The improvements seem to be mostly in quality control, and not improved performance or specifications.)
QST, Dec 1973, p. 126. (moving to New Jersey under new ownership and with a "new standard of reliability")
QST, Sep 1971, p. 139. (CX7-A)
QST, Oct 1971, p. 137.
QST, Apr 1974, p. 124. (CX7-B will be shown at Dayton, taking advance orders)
.
Signal/One introduced the concept of the high-performance, integrated station. It included two PTOs, an IC keyer, an RF clipper, a noise blanker, and a 115/230 VAC power supply. The CX-7 covered the amateur bands between 1.8-29.7 MHz and optional crystals permitted operation on three other 1 MHz segments. The Nixie tube digital readout displayed frequency down to 100 Hz. The transceiver was solid-state except for the RCA 8072 output tube. The final amplifier was rated at 300 watts peak input. The output was broad-banded and manual tuning was necessary only when the load's SWR exceeded 1.5:1. The receiver used a pair of sharp filters and electronic IF shift. Signal/One was owned by ECI of St. Petersburg, Florida, a division of NCR. By the time the CX-7A debuted (1971), Signal/One had become a division of Computer Measurements, Inc. of Gardena, California.
The CX-7A resembled the previous model physically and electrically. Signal/One had become a division of Computer Measurements, Inc. of Gardena, California. The new ads stated that small problems in the previous design had been “ironed out” in the CX-7A. Other than the change of ownership, there was little difference between the CX-7 and CX-7A.
Replaced by the CX11 in January 1975. (QST, Jan 1975, p. 128.)
