"Sunbeam radio"Archived 2020-02-17 at the Wayback Machine Classicwireless.co.uk. Anonymous. Retrieved June 21, 2013. (Offers AC/DC operation as a selling point).
Burrell, Malcolm (December 1979). "Vintage TV: The Bush Model TV22"(PDF). Television. UK. pp. 88–89. Archived from the original(PDF) on 2012-03-23. Retrieved 2013-06-21 – via domino405.co.uk.
kevinchant.com
"Technical Bulletin: Model 'PS'" (PDF). Astor Radio Corporation Pty, Ltd. February 22, 1952. Via KevinChant.com. Retrieved June 21, 2013. (Manual of 1952 Astor with instructions on use with AC and DC mains of different voltages)
murphy-radio.co.uk
"1935 catalogue". Murphy Radio Co. Retrieved June 21, 2013. (Showing AC/DC models £0.5.0 (about 2%) more expensive than AC only.)
"Pye B18T AC/DC Television Chassis". The National Valve Museum. Wireless World. December 1948. Retrieved 21 April 2021. True AC/DC 240V monochrome TV. For 190–220 V AC operation needed an additional autotransformer. DC operation was possible, but was not an advertised feature; the transformerless design was to save size and weight.
"Pye B18T AC/DC Television Chassis". Wireless World. September 1948. Retrieved 17 July 2016. "The set is the first on the market in which this technique has been applied to television."
"Sunbeam radio"Archived 2020-02-17 at the Wayback Machine Classicwireless.co.uk. Anonymous. Retrieved June 21, 2013. (Offers AC/DC operation as a selling point).
Burrell, Malcolm (December 1979). "Vintage TV: The Bush Model TV22"(PDF). Television. UK. pp. 88–89. Archived from the original(PDF) on 2012-03-23. Retrieved 2013-06-21 – via domino405.co.uk.
