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Schumann wave antennas
Transmit signals using Schumann wave antennas
J J. Wagner
2025-07-31 18:39:32
The FG-200 DDS function generator is an easy to use device that I’ve found to be handy for general purpose functions for testing analog circuitry. It has a very standard 50 ohm output impedance and comes with a coaxial cable and alligator clips that are at 75 ohms, which shouldn’t matter due to the low maximum frequency of this device. The amplitude and frequency are easily adjustable with a knob on the side and buttons on the front panel.I like the verbose LCD screen that states the operating frequency and waveform. Scrolling through the waveforms, there’s a lot of options including standard things like sine, square, sawtooth, and more niche ones like tangent and “ECG†that I off hand think of a use of for my needs. I measured the sine waveform to have a max frequency of 100khz without severe distortion and a maximum amplitude of 15V. Overall this is a great tool for hobbyist use.
osiris
2025-01-12 19:35:30
For $36 you get an expensive low end frequency generator with a schumann resonator adapter. The range of the generator is not very high (0.01Hz to 500KHz) It comes with alligators clip and a USB power cable but no power adapter. The resonator comes with a cable. This is the same model as the FG-100 (in white color) which cost like $25 ($15 on ebay.)
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