We found 3 S.A. 6940 nodes to have high freqency suckouts that drift slowly from low to high in the 550 to 860 MHz range. Two of which were found to be only on port 3 and one was on port 4. The launch amp in all three were re-seated several times with only a few days success then the suckout reappears. Total swap of the launch amp is the only cure. Does anyone know know what is causing this, or has S.A. come forward with any information regarding this problem. Thanks . airbuck
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