Hi, I have been running the U-QRSS kit with 4 AA, 1.4v 8000mAH rechargable batteries on WSPR with FRAME set at 14 non stop for the last 30 hours, on my first try I used batteries I had forgotten to recharge and at sometime during the night they stopped doing their job but I am happy to report no corrupted data was found when replacing them.
I am still having problems with freqency drift, before I destroyed the PBC around the Xtal the drift on WSPR was mostly 0 but since rewiring the PBC it is now permently -1 to -2 and over a 14 hour period I was spotted by GW0OAJ 7 times from 10.140231 down to 10.140218 a difference of -13 Hz its a good job that I can tune so far up on WSRP otherwise I would be off the scale.
73 de Colin DD5CF