Dear opds users,
I have recently discovered a minor bug in opds2h5c which
could sometimes produce systematic false detections from
partial correlations after the end of a strong Opera signal.
This has hopefully been fixed in version 2h6:
http://df6nm.de/opera/opds2h6.zip
This version should be completely compatible with existing
configurations and ini files, so all you have to do is start
opds2h6 instead of opds2h5c.
Differences are:
- potential false partial correlations are cross-checked
against detections on the same frequency during the last 32
minutes,
- to further reduce possible false detections triggered by
strong non-Opera signals, the correlation threshold is now
raised with signal strength. By default, it goes up linearly
from 15 to 19 dB, starting at SNR -41 dBOp. If desired, this
behavior can be modified by dedicated opds.ini entries,
- the bug in the default filename pattern has been corrected,
so the "pattern=*.txt" ini-line is no longer needed,
- unused parts of the code have been removed, resulting in a
slightly smaller source and executable.
BTW For the old 16-bit QuickBasic versions before opds2h5b, I
had recommended to prevent CPU-load peaks by running the
process at lower priority. This seems to be no longer
necessary.
Best 73,
Markus (DF6NM)
