A loose contact of partly worn-out F batteries frequently creates disturbances that sound exactly like static, Test batteries for the proper voltage, and make a careful search for the bad contact.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19271209.2.29
Bibliographic details
Radio Record, Volume I, Issue 21, 9 December 1927, Page 4
Word Count
31Untitled Radio Record, Volume I, Issue 21, 9 December 1927, Page 4
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