In the 1920s the TRF – tuned radio frequency – radios were hard to tune and their performance wasn’t very good. In 1929 the radio manufacturers started selling superheterodyne radios that had only one tuning knob, not several like the TRFs had. No more fiddling around with knobs to try to get good reception. Plus the antenna was built in to the radio.<\/p>\n\n\n\n
So apparently the people gave their old TRF sets to junk dealers who threw them in piles and burned them. It’s sad to see those Atwater Kent and other TRF sets go up in flames.<\/p>\n\n\n\n
This short video’s description is in Spanish.<\/p>\n\n\n\n
https:\/\/www.facebook.com\/BielerRestauraciones\/videos\/722645490227752\/?mibextid=9drbnH&s=yWDuG2&fs=e<\/p>\n","protected":false},"excerpt":{"rendered":"
In the 1920s the TRF – tuned radio frequency – radios were hard to tune and their performance wasn’t very good. In 1929 the radio manufacturers started selling superheterodyne radios that had only one tuning knob, not several like the TRFs had. No more fiddling around with knobs to try to get good reception. Plus <\/p>\n (Read More…)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[311,1518,1601,255,323,284,350,722,192,262,337,1284],"tags":[4292,4290,4289,4291,4288,4287],"class_list":["post-21127","post","type-post","status-publish","format-standard","hentry","category-am-band","category-antenna","category-biography","category-consumer-information","category-electronic-design","category-history","category-inventions","category-newsmedia","category-radio-television-entertainment","category-receiver","category-vacuum-tubes","category-video-books-documents-literature","tag-burned","tag-junk","tag-obsolete","tag-piles","tag-radios","tag-trf"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/21127","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=21127"}],"version-history":[{"count":2,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/21127\/revisions"}],"predecessor-version":[{"id":21129,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/21127\/revisions\/21129"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}