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Hi Victor,
nice signal from Henny, without any visible
drift. How accurate is the displayed frequency, 8970.0237 Hz?
Do you have an idea about the regularly spaced
"beads" on the line? Looks almost like 180° phase inversions. Is that
an intentional modulation? Similar effects could be caused by buffer
underflows in one of the soundcards, eg. due to samplerate
oddities.
Best regards,
Markus (DF6NM)
Sent: Wednesday, March 09, 2011 7:32 PM
Subject: LF: 8970.025
HI all,
attached a picture from Henny's signal the last 24 hours
that shows the
total drift of his tx,my rx and the soundblaster audigy
soundcard.Not much
to see with a noisebandwidth of 438 uHz.
No locking to
gps or wathever.The signal at 0.00Hz is Rugby at 60 KHz to
check my
rx.
73
Victor
PA3FNY
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