Tech Talk

1920's circuit diagrams avaliability
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Return to top of page · Post #: 1 · Written at 4:52:27 PM on 11 July 2023.
	Simplex Location: Bathurst, NSW Member since 7 August 2008 Member #: 336 Postcount: 397
As mentioned in other threads have a four valve 1920's battery set. Two A415's, two 172B valves. Quite a well built home made set which works well. The components, wiring, are of good quality brand names and now suspect this set may have been a kit. If a kit would like to track it down as well get the original circuit diagram. Suspect this set is of 1924 to 1928 vintage and am querying whether there is a on line resource of Australian radio magazines which I could research. Hopefully tracking down which kit if a kitset or at least getting a original circuit diagram to which the set was built. Any guidance on this would be appreciated.

Return to top of page · Post #: 2 · Written at 5:15:06 PM on 11 July 2023.
	Redxm Location: Tamworth, NSW Member since 6 April 2012 Member #: 1126 Postcount: 466
https://worldradiohistory.com/Wireless_Weekly-AU.htm Ben

Return to top of page · Post #: 3 · Written at 6:29:29 AM on 12 July 2023.
	Simplex Location: Bathurst, NSW Member since 7 August 2008 Member #: 336 Postcount: 397
Thanks for these magazines and at least have determined my set is around 1929 or thereabouts vintage. Seems to be a variant of the popular four valve Marco.

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