{"id":10999,"date":"2026-06-30T14:26:09","date_gmt":"2026-06-30T14:26:09","guid":{"rendered":"https:\/\/museumkesher.org.il\/?post_type=catalog&#038;p=10999"},"modified":"2026-06-30T17:35:08","modified_gmt":"2026-06-30T17:35:08","slug":"audio-power-meter-zbd-583-general-radio-583-a","status":"publish","type":"catalog","link":"https:\/\/museumkesher.org.il\/en\/catalog\/audio-power-meter-zbd-583-general-radio-583-a\/","title":{"rendered":"Audio Power Meter ZBD-583 (General Radio 583-A)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Audio power meter, used for testing audio and carrier equipment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Manufactured from 1932 to 1961.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Used by the IDF during the War of Independence (1948), the Sinai Campaign (1956) and the Six Day War (1967).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Enabled load impedance measurements, since this impedance equals the impedance into which maximum power is delivered, and measurement of audio transformers loss.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Used for audio power measurements in the frequency range of 20 to 20,000 Hertz, power range of 0.1 to 5,000 milliwatts (-10 to +37 dB above 1 milliwatt) and impedance of 2.5 to 20,000 Ohms.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Manufactured by General Radio, USA, designated Type 583-A Output Power Meter.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"featured_media":10989,"template":"","catalog_cat":[28],"period":[39,93,44],"class_list":["post-10999","catalog","type-catalog","status-publish","has-post-thumbnail","hentry","catalog_cat-other","period-war-of-independence","period-sinai-campaign","period-six-day-war"],"acf":[],"_links":{"self":[{"href":"https:\/\/museumkesher.org.il\/en\/wp-json\/wp\/v2\/catalog\/10999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/museumkesher.org.il\/en\/wp-json\/wp\/v2\/catalog"}],"about":[{"href":"https:\/\/museumkesher.org.il\/en\/wp-json\/wp\/v2\/types\/catalog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/museumkesher.org.il\/en\/wp-json\/wp\/v2\/media\/10989"}],"wp:attachment":[{"href":"https:\/\/museumkesher.org.il\/en\/wp-json\/wp\/v2\/media?parent=10999"}],"wp:term":[{"taxonomy":"catalog_cat","embeddable":true,"href":"https:\/\/museumkesher.org.il\/en\/wp-json\/wp\/v2\/catalog_cat?post=10999"},{"taxonomy":"period","embeddable":true,"href":"https:\/\/museumkesher.org.il\/en\/wp-json\/wp\/v2\/period?post=10999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}