{"id":10233,"date":"2016-10-20T10:34:00","date_gmt":"2016-10-19T23:34:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2016\/10\/20\/cool-jazz-from-new-zealand-as-heard-on-a-homebrew-superhet-receiver-video\/"},"modified":"2016-10-20T10:34:00","modified_gmt":"2016-10-19T23:34:00","slug":"cool-jazz-from-new-zealand-as-heard-on-a-homebrew-superhet-receiver-video","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2016\/10\/20\/cool-jazz-from-new-zealand-as-heard-on-a-homebrew-superhet-receiver-video\/","title":{"rendered":"Cool Jazz from New Zealand as Heard on a Homebrew Superhet Receiver (VIDEO)"},"content":{"rendered":"<p><iframe loading=\"lazy\" allowfullscreen=\"\" frameborder=\"0\" height=\"248\" src=\"https:\/\/www.youtube.com\/embed\/VNt2u3wyKTw?rel=0\" width=\"440\"><\/iframe><\/p>\n<p> <b>I&#8217;m making slow but steady progress on this one. The origin of the project was the beautiful National HRO dial and gearbox that Armand WA1UQO gave me. <\/b><br \/> <b><br \/><\/b> <b>I decided to use a 455 kHz IF because; <\/b><br \/> <b>1) That was the IF of the old HRO receivers (the ones that won WWII) <\/b><br \/> <b>2) I had a nice TOYO CM455 crystal mechanical filter that would be good for SSB. <\/b><br \/> <b>3) I figured it would be easy to add in a wider filter that would be good for AM shortwave listening.<\/b><br \/> <b>4) I like to keep the IF below the frequency of the VFO. <\/b><br \/> <b><br \/><\/b> <b>The wide filter turned out to be harder than I thought, but I think I have finally achieved the selectivity I was looking for.<\/b> <b>I&#8217;ll have a switch on the front panel that will allow me to go from &#8220;AM-Wide&#8221; to &#8220;SSB Narrow.&#8221; The switch will change the filters and the detectors, and will turn the BFO on and off.<\/b> <\/p>\n<p> <b>Still to do: I need a high-pass filter to knock down RFI from nearby AM broadcast transmitter. And an RF gain control would be nice.<\/b> <\/p>\n<p> <b>I&#8217;m really glad Radio New Zealand is there. It provides welcome relief from the shortwave fire and brimstone. Radio Romania is also doing a fine job on shortwave.<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m making slow but steady progress on this one. The origin of the project was the beautiful National HRO dial and gearbox that Armand WA1UQO gave me. I decided to use a 455 kHz IF because; 1) That was the IF of the old HRO receivers (the ones that won WWII) 2) I had a &hellip; <a href=\"https:\/\/www.homebrewradio.us\/blog\/2016\/10\/20\/cool-jazz-from-new-zealand-as-heard-on-a-homebrew-superhet-receiver-video\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Cool Jazz from New Zealand as Heard on a Homebrew Superhet Receiver (VIDEO)&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[321,214,127,100,72,57],"tags":[],"class_list":["post-10233","post","type-post","status-publish","format-standard","hentry","category-hamel-armand","category-music","category-new-zealand","category-old-radio","category-short-wave-listening","category-superhet-receivers"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/comments?post=10233"}],"version-history":[{"count":0,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/10233\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=10233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=10233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=10233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}