{"id":100,"date":"2013-11-24T22:20:23","date_gmt":"2013-11-24T22:20:23","guid":{"rendered":"http:\/\/phoenixgamedevelopment.com\/blog\/?p=100"},"modified":"2013-11-24T22:21:14","modified_gmt":"2013-11-24T22:21:14","slug":"project-114-vlf-antenna-phase-1-final-report","status":"publish","type":"post","link":"https:\/\/phoenixgamedevelopment.com\/blog\/project-114-vlf-antenna-phase-1-final-report\/","title":{"rendered":"Project 114: VLF Antenna Phase 1 Final Report"},"content":{"rendered":"

I have finally finished phase one of my VLF Antenna Project. I am generally happy with the results, the antenna worked, and I did get some definite radio atmospheric activity from the audio amplifier. However, my attempts to digitise this data have not been very successful.<\/h3>\n

I attempted to use an Operational Amplifier (OpAmp) to replace the audio amplifier in the speaker, and I connected the output from the OpAmp circuit into the Arduino, but I am not confident that I captured real data coming from the Antenna. I have two large data sets that I am currently attempting to process. Most of the programs I have used can’t handle the large size of the dataset, however, small sections of the data that I have plotted look ok. I will continue my attempts to replicate the observed trace using the data I have saved.<\/h3>\n

I have been using gnuplot to plot the data, and it seems to be able to process it ok, but presents it as as squashed block of red lines. I need to figure out how to space it out more before I can make use of it.<\/h3>\n

I did see one bizarre signal while recording the trace, which lasted several seconds. It seemed to be some man-made signal however, it looked too ordered and consistent to be natural. It could have been a radio transmission from a boat or a plane, or something of that nature. I will analyse it further if I can isolate it from the data.<\/h3>\n

The signal output shown below is the normal background radiation picked up the the antenna, there is nothing particularly unusual going on there.<\/h3>\n

 <\/p>\n

\"SNAP004<\/a> \"SNAP001<\/a> \"DSCF1189\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

I have finally finished phase one of my VLF Antenna Project. I am generally happy with the results, the antenna worked, and I did get some definite radio atmospheric activity from the audio amplifier. However, my attempts to digitise this data have not been very successful. I attempted to use an Operational Amplifier (OpAmp) to […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-100","post","type-post","status-publish","format-standard","hentry","category-inventions","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"aioseo_notices":[],"builder_content":"","_links":{"self":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts\/100"}],"collection":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/comments?post=100"}],"version-history":[{"count":3,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts\/100\/revisions"}],"predecessor-version":[{"id":106,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/posts\/100\/revisions\/106"}],"wp:attachment":[{"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/media?parent=100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/categories?post=100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phoenixgamedevelopment.com\/blog\/wp-json\/wp\/v2\/tags?post=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}