{"id":7722,"date":"2014-03-18T08:00:01","date_gmt":"2014-03-18T12:00:01","guid":{"rendered":"http:\/\/www.engineeringradio.us\/blog\/?p=7722"},"modified":"2023-03-29T13:31:52","modified_gmt":"2023-03-29T17:31:52","slug":"engineer-killer","status":"publish","type":"post","link":"https:\/\/www.engineeringradio.us\/blog\/2014\/03\/engineer-killer\/","title":{"rendered":"Engineer Killer"},"content":{"rendered":"\n

That was the title of the email with this photo attached:<\/p>\n\n\n\n

\"Disabled<\/a>
Disabled high voltage shorting bar, Collins 820D-2 AM transmitter.  Courtesy Pete Partinio<\/figcaption><\/figure>\n\n\n\n

That seems about right.<\/p>\n\n\n\n

For many, many reasons, this is a bad thing to do.\u00a0 First of all, the shorting bar is the last point of discharge for the high-voltage power supply.\u00a0 When all else fails, this is designed to route the 3,500-volt plate supply safely to ground.\u00a0 Having a stray 3,500 volts floating around inside a transmitter is never a good idea.\u00a0 Fortunately, it was spotted and removed before anything bad happened.<\/p>\n\n\n\n

Secondly, it looks like somebody used a 12 VDC cigarette lighter plug as an insulating device.  Wow, did they get lucky.  This could have started a fire.<\/p>\n\n\n\n

As to exactly why it was there in the first place, I cannot rightly say.<\/p>\n\n\n\n

And this is why only properly trained people should be working on transmitters, especially tube-type ones.<\/p>\n","protected":false},"excerpt":{"rendered":"

That was the title of the email with this photo attached: That seems about right. For many, many reasons, this is a bad thing to do.\u00a0 First of all, the shorting bar is the last point of discharge for the high-voltage power supply.\u00a0 When all else fails, this is designed to route the 3,500-volt plate … Continue reading Engineer Killer<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[245,110],"class_list":["post-7722","post","type-post","status-publish","format-standard","hentry","category-general","tag-am-transmitter","tag-safety"],"_links":{"self":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/7722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/comments?post=7722"}],"version-history":[{"count":3,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/7722\/revisions"}],"predecessor-version":[{"id":11285,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/7722\/revisions\/11285"}],"wp:attachment":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/media?parent=7722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/categories?post=7722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/tags?post=7722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}