Hi ...

The same FSK, 100Hz shift, was received at 23°S/46°W at 4:30 UTC aprox,
centered at 73.25KHz. Sometimes audible, but most of the time only detected
on Spectran.

Other signals:

DCF77 (77.5K) detected
WWVB (60.0K) very weak
DCFXX (129.1K) nil
DATATRAK (133.24) huge signal (20dBuv)
DATATRAK (146.40) huge signal (15dBuv) - there's another Datatrak station on
146.4, weaker.

Seems that the path at 70KHz was good to Europe and bad for NA. On 130KHz
and above not so good. BCs had its normal fs. Those Datatrak seems Argentina
and South Africa. One of them is a daytimer here (forgot which one).

73
Marcus
PY3CRX/PY2PLL
S. B. do Campo - GG66rf
http://py.qsl.br
Active from "DC" to 24GHz