In June 1990 I completed a sixty-hour Bendix/King training class on the RTA-4A, the receiver/transmitter of the RDR-4A airline weather radar, early in my 1989–1996 period working on the system. The certificate also shows what Bendix/King called the unit (a "Weather Radar Transceiver") and that its Air Transport Avionics Division was part of Allied-Signal Aerospace at the time.
← Back to the article: The Bendix/King RDR-4A Weather Radar and Its RTA-4A Receiver/Transmitter (www.geeksforge.com/Research/RTA-4A-Weather-Radar-Deep-Dive.html)
Certificate: Rick Childers, personal collection. Scan resized to 1200 px wide; metadata removed. Click to enlarge.
← Back to the article: The Bendix/King RDR-4A Weather Radar and Its RTA-4A Receiver/Transmitter
By Rick Childers, September 2026, for GeeksForge Research Projects. From my personal collection.