Radio receiver made by David Hain

Made by Hain, David in Sydney, c 1950.

This hand built radio designed by the donor clearly demonstrates their continued development as a radio circuit designer and desire to understand the new technology of transistors and its application to radio circuit design.

Included with the radio are handwritten notes by the donor that detail the original design of the radio and a commentary on the developments in the circuit design as they occurred, the conditions that engendered these developments and expressions of their feelings regarding...

Summary

2007/17/13
Radio receiver, mantle radio, and documents, wood / glass / electronic components / metal, designed, made and modified by David Hain, Sydney, New South Wales, Australia, 1950-1970

Wooden radio with brown mottled vinyl covering, two bar speaker grille and oblong frequency dial. Frequency dial has horizontal white needle and brown plastic moulding surround. Three control knobs below dial. Swinging handle on top, hinged back board.

Three handwritten circuit diagrams and four hand written notes.

Production

Designed and built by David Hain in the early 1950s or the late 1940s as a 5 valve battery operated portable using the 'new' 7 pin miniature 1.4 volt series of valves (IT4, IR5, IS5 and 3V4). Based on a Radio and Hobbies (now Electronics Australia magazine) design and used the chassis and cabinet produced for the R&H design.

David used the chassis etc. to experiment with transistor circuits in order to develop a better understanding of this new technology and its application to radio circuit design. Handwritten notes by David Hain explain that 'when silicon RF transistors became available at modest prices in the mid 1960s or thereabouts I decided to design and build some 'way out' unconventional circuits which I knew would not be commercially viable and probably not very good from a performance viewpoint. The tuner of this set is the result. The Audio output section with germanium TO3 transistor is earlier in its origin.'
Hain, David c 1950

Source

Gift of David W Hain, 2007

Cite this Object

Radio receiver made by David Hain 2014, Museum of Applied Arts & Sciences, accessed 30 March 2017, <https://ma.as/362361>
{{cite web |url=https://ma.as/362361 |title=Radio receiver made by David Hain |author=Museum of Applied Arts & Sciences |access-date=30 March 2017 |publisher=Museum of Applied Arts & Sciences, Australia}}
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