MSHV v PI-RX on Weak
Signals
Okay so I cannot say much other than to report what happens here.
If I generate my own local PI4 signals from a U3s beacon (similar
to that used at EI0SIX looking at the photographs) then there
seems to be little to choose between these two programs - these
local signals are quite strong even into a dummy load. However on
the very weak signals I see arriving here from distant beacons -
typically lower than -20db - there is no contest. PI-RX is the
ONLY program so far which decodes these signals. Why is this? The
short answer is: I do not know. It could quite easily be a case of
user error - even locally generated MSHV signals look to be
'weaker', perhaps this relative 'attenuation' is the cause. Of
course PI-RX is dedicated to one mode, so perhaps a performance
advantage is to be expected - master of one?
MSHV
and PI-RX Local signal decodes
I have noted this in the PI-RX decoder settings:
What
these 'Additional data extraction algorithms' comprise I have
no idea. (I suppose I should try it with no internet
connection to eliminate external influence - I did, it
still worked). In any case I have not seen any such
settings on MSHV for PI4, they may exist I just haven't found
them yet. Perhaps it is these 'deep' features which make the
difference.
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