Question, not an issue, PPM stability

[bradshawlupton]

I have 3 WsprryPi installations. Indiana, Central Mass and Cape Cod Canal Mass. Actually this hs humor value!

the first two have very stable ppm, small reasonable drift.

INDIANA
Obtained new ppm value: -3.9695
Obtained new ppm value: -3.94389
Obtained new ppm value: -3.94389
Obtained new ppm value: -3.94389

Central MASS
Obtained new ppm value: -3.18324
Obtained new ppm value: -3.18324
Obtained new ppm value: -3.35112
Obtained new ppm value: -3.35112

Then the CRAZY Cape Cod.
Obtained new ppm value: -87.9224
Obtained new ppm value: 183.652
Obtained new ppm value: 51.7667
Obtained new ppm value: -43.8727
Obtained new ppm value: -146.261
Obtained new ppm value: 113.812

Crazy Cape Cod on two different Walmart battery packs (I get about 14 hours of operation)

The CRAZY results are on both a pi3 and pi4 w/ buster. the pi zero w hangs with either buster or bullseye,
right at the first transmit

  _I am looking for thoughts to try, or sympathy._

          Thanks, Bradshaw K1TE