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Stefan
which effect do you mean?
- the undecipherable garbage in Morse code? Must be
toot-toot mode *)
- the gap in the middle, between "ts" and "nr"?
Must have been a temporary outage on the transmit side, or a SpecLab timewarp at
G4WGT.
- The weak +- 10 Hz sidelines at the
beginning? Probably a spurious modulation from the transmitter or
power supply, or perhaps an artifact the receiver AGC, acting on a pair of local
signals outside the spectrogram range. Or a Perseid meteor trail, moving at 20
km/s (no, not really).
Best 73,
Markus (DF6NM)
*) Here in DL (and probably elsewhere),
there is a wedding rite that the newly married couple
is driving from church in a flower decorated car, followed by their
friends and relatives in a convoy of cars. They follow a white chalk line
painted on the street **), and usually keep honking their horns in an
erratic manner. Listening to one or several
instantaneous Opera signals never fails to remind me of that sound - so I
privately dubbed it "honk mode".
**) Rumour has it that this white line is primarily
meant to guide the couple in safe distance around the houses of their former
lovers.
Sent: Sunday, August 12, 2012 4:33 PM
Subject: LF: What is that effect?
LF,
Just seen this on the G4WGT garbber, see
attachment. Where does this
frequency spreading effect come
from?
Experts: go!
73, Stefan
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