Assistance requested - beacon images on 30 meters

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KE7KRF
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Last seen: 3 hours 49 min ago
Joined: 2011/08/23 - 17:49
Assistance requested - beacon images on 30 meters

I am new at using WSPR, but everything went well yesterday and this morning receiving on 20 meters. Am amazed at what can be heard. However when I tried to receive on 30 meters just a few minutes ago, every station has a weaker image at plus 120 hz and the higher freq is very weak.

Here is what it looked like in the Spot Log, before I terminated the uploads. I am mystified since for two days everything performed as expected on 20 mts.

2011-08-24 17:20 K9IQY 10.140147 -3 0 EM58ti 5 KE7KRF DM51kw 2012 256
2011-08-24 17:20 K9IQY 10.140267 -26 0 EM58ti 5 KE7KRF DM51kw 2012 256
2011-08-24 17:18 N5WY 10.140131 +3 1 EM12pu 5 KE7KRF DM51kw 1170 268
2011-08-24 17:18 N5WY 10.140251 -23 1 EM12pu 5 KE7KRF DM51kw 1170 268

Any guidance would be appreciated.

Currently RX only, IC-7600 w/ Signalink USB.