143 MHz 'regular' interferometery update

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David Lonard

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Mar 5, 2022, 8:35:42 PM3/5/22
to Amateur radio interferometry
Hello everyone,

Here is some new fringe data from my upgrade to a pair of 3 element Yagi antennas. I stretched out to a 340 meter baseline to resolve away the sun. 

A single LimeSDR is used here with its own internal clock. The data is significantly better than with the QHA antennas. The QHA antennas appear to see too much of the sky and pick up RFI along the horizon.

The two images are from a ~4 hour run and I am going to let my FX correlator run for a month to have enough data for some deeper integration.

David

340meter2.jpeg
340meter1.jpeg

David Lonard

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Mar 5, 2022, 10:01:33 PM3/5/22
to Amateur radio interferometry
340meter2.jpeg is the power spectrogram
340meter1.jpeg is the phase spectrogram

138 to 148 MHz

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