#112: Use an Oscilloscope and Signal Generator help tune an HF Antenna, measure complex impedance

w2aew
w2aew
202.8 هزار بار بازدید - 11 سال پیش - This is a two part
This is a two part video:  Part 1 shows one way to use a scope, signal generator, and a simple circuit to help you visually tune an HF antenna with an antenna tuner (or via antenna adjustments).  Part 2 shows how you can estimate the complex impedance of the antenna system (antenna and feedline) using the same setup.  This method should work reasonably well for HF frequencies with a carefully built fixture and setup.  Parasitics and other sources of uncertainty will likely start to become significant at frequencies above 30MHz or so.  Part 1 runs for the first 9 minutes, and part 2 picks up at the 9:00 mark.

Cool!  This video got posted to Hack-A-Day!
http://hackaday.com/2013/09/20/visual...

Notes from this video can be found here:
http://www.qsl.net/w/w2aew//youtube/U...
11 سال پیش در تاریخ 1392/06/28 منتشر شده است.
202,870 بـار بازدید شده
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