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Tnx John
The over drive option has a flaw ,as far as I can
see , as to where the frequency
spacing of the side bands originates , yes,
psk31 , over driven produce's IMD but wspr is
a single phase cont tone system
do you see this pattern from your SDR
?
Tnx- G,
Sent: Wednesday, July 01, 2015 5:37 PM
Subject: Re: LF: what causes this on wspr
Two real options:
1) over driven audio, as your picture caption suggests
or
2) the rx site is close to the
TX station and is overloading the receiver. I have a remote Ensemble II LF
SDR at a site 1 mile away from my TX and I overload it like this regularly but
its not because I'm over-driving my system. The signal is simply to strong
for that distance and the receiver is in an overload condition.
73!
John KB5NJD / WG2XIQ
what causes this on wspr
This takes some doing ...... but how
to do it ?
G,
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