I found those 4.224 Crystal oscillators (ex equipment) on eBay .
Divide 4224 by 32 (first 8 and then make the quadrature signals), and the LO frequency ends up on 132 kHz. Not bad for a 136 kHz SDR.
Deep Space Station 43 -- Canberra, Australia
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https://spectrum.ieee.org/apollo-era-antenna-voyager-2
From the IEEE article:
*The dish’s manufacturer took great pains to ensure that its surface ha...
4 hours ago
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