11 Jan 2014

Continued 10m WSPR tests

Today, I continued my 10m WSPR tests at 2W out: plenty of spots both given and received. This afternoon the power will be dropped to 500mW to see how many N.American spots I get still. The sunspot number is still good.

UPDATE 1244z: switched to 500mW out.  Still getting spots from Israel  and Canada  even at 500mW level.This is not surprising: as long as the QRP signal gives better than -30dB S/N it should still decode. The advantage of running 2W rather than 500mW is one is far less likely to be buried under a bigger signal,which can be an issue when HF bands are busy. Why some WSPR stations run 20,or even 100W out amazes and horrifies me. WSPR is a QRP mode, ideally suited to 5W or less.
10m WSPR TX at 500mW this afternoon




Conditions do not seem to be as good as of late with fewer 10m US stations copyable here.

UPDATE 1442:  switched back to 2W out. Plenty of VE and W reports coming through now again.

10m seemed to die out transatlantic about 2 hours earlier than last night (16.30z).

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