{"id":4692,"date":"2015-12-18T16:23:48","date_gmt":"2015-12-18T15:23:48","guid":{"rendered":"http:\/\/www.brickrknowledge.de\/en\/?p=4692"},"modified":"2015-12-18T16:38:36","modified_gmt":"2015-12-18T15:38:36","slug":"the-cq-dl-set","status":"publish","type":"post","link":"https:\/\/forum.brickrknowledge.de\/en\/the-cq-dl-set\/","title":{"rendered":"The CQ DL set"},"content":{"rendered":"<p>We will ship\u00a0the first RF-Bricks of the MHz and GHz series\u00a0soon.<\/p>\n<p><strong>RF MHz Brick LOG Powermeter LF-500MHz<\/strong><\/p>\n<p>With a full dynamic range of round about -75dBm to +15dBm it\u00b4s possible to measure the rf power of a rf system. Because of the high dynamic range this brick also allows for the measuring of receiver circuits. A rf signal is connected to the input of the rf brick and the result is represented by\u00a0a voltage between 0.3 and 2.3V. The voltage has a slope of around 20mV\/dB. This allows direct connection of an ad converter for example for the ardunio nano brick for reading the result. The frequency range is from several kHz up to 500Mhz. A correction curve is available in the manufactorer datasheet of the AD8307 which we use for conversion. A voltage stabilizer is also in the brick, and allows a external voltage of 9V.<\/p>\n<p><strong>RF MHz Brick Highpassfilter.<\/strong><\/p>\n<p>This brick is used as demonstration rbick for our small skalar network analyzer which we presented in the german ham radio magazine CQ DL 2016\/1.<\/p>\n<p><strong>RF GHz VCO 400MHz-1300MHz<\/strong><\/p>\n<p>The oscillator is voltage controlled and allows a frequency range from 400MHz to 1300MHz by using a control voltage between 0V and 20V. Its possible to use our D\/A converter brick wird up to 10V directly for around 800MHz and therefore build a small scalar network analyzer. The result can be converted using one of the log amplifier bricks with upcoming versions 10Mhz-6GHz and 1MHz to 10GHz. The output is feed into the A\/D converter of the arduino nano as example. This allows not only measuring of filter devices but also using a rf bridge for display an antenna measuring result.<\/p>\n<p>Rolf-Dieter<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We will ship\u00a0the first RF-Bricks of the MHz and GHz series\u00a0soon. RF MHz Brick LOG Powermeter LF-500MHz With a full dynamic range of round about -75dBm to +15dBm it\u00b4s possible to measure the rf power of a rf system. Because of the high dynamic range this brick also allows for the measuring of receiver circuits. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4875,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-4692","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorised-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The CQ DL set - Brick&#039;R&#039;knowledge<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/forum.brickrknowledge.com\/en\/the-cq-dl-set\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The CQ DL set - Brick&#039;R&#039;knowledge\" \/>\n<meta property=\"og:description\" content=\"We will ship\u00a0the first RF-Bricks of the MHz and GHz series\u00a0soon. RF MHz Brick LOG Powermeter LF-500MHz With a full dynamic range of round about -75dBm to +15dBm it\u00b4s possible to measure the rf power of a rf system. Because of the high dynamic range this brick also allows for the measuring of receiver circuits. 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