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Hi Wolf,
I tried to download your latest version but I can't open de
zip file as it seems
to be corrupted..(non valid archive)
I downloaded it a couple of times but same thing
happened..
73, Bob ve3tok
----- Original Message -----
Sent: June 14, 2001 21:47 PM
Subject: LF: Spectrum Lab - new
functions
Hi Alan, Brian, Peter,
and others playing with Spectrum Lab:
I have just uploaded a
slightly improved version of the program to its "main"
site (not the
'beta' site, though it still has 'beta' status) :
http://members.aol.com/dl4yhfhamsoft/spectr_i.zip
.
Modified or new:
- the value
returned by the noise detection function (based on G4JNTs
algorithm) can
now be 'normalized' for a RX bandwidth of 1 Hz, making it no
longer
dependent on the current FFT settings.
- demo file for the "software
VLF receiver" now supports easy changing of the
"VFO frequency"
simply by moving a marker on the frequency axis of the
spectrum graph,
also the volume of the filter output can now be changed
without having to
change the filter itself (click on the amplifier symbol in
the circuit
window, this is not described in the manual yet).
- sideband rejection
of the VLF receiver improved (better 90 degree phase
shifter, if your PC
is fast enough you can increast the length of the Hilbert
transformer. Not
described in the manual yet...)
- Inaccuracy of the "cursor" function
with horizontal running waterfall has
been fixed, thanks Brian !
Thanks to all testers for their time and patience. The uploaded
version is
"V1.65 beta 8". Good luck with it !
73, Wolf
DL4YHF.
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