Sunday, November 29, 2009

30m as my DC-RX sees it

A busy 30m band, and that's what the two diodes listen to. Sometimes other modes occur, but that's usual mix, PSK31, WSPR, QRSS and RTTY. Unknown noise band just across the qrss-section, does anyone have an idea what that could possibly be?
If you wonder why the spectrum is brighter at about 10.140MHz, I am using a single 10.140MHz crystal as front-end filter, tuned to the qrss-section.

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