At the top of the SDRadio and Winrad softwares, there is the "LO IN
Frequency" display if you click that then you can enter any L.O. IN
frequency you want.  When you click this on SDRadio it says "Enter L.O.
Frequency"  you can enter 0455 Khz or 10.7 MHz or the "L.O. In" of the
CIAO H101.

  To find the L.O. IN of the H101 receiver just click "Setup" in the
Menu Bar and then select "Configuration."  in the lower left corner of
the task pad window there is the L.O. In Frequency, copy and paste it
to the SDRadio or Winrad "L.O. In" feature setup.  If you are wanting
to listen to WBCQ then the L.O. IN will be 7410000 Hz, just copy and
paste this portion  " 7410 " KHz to the SDRadio or Winrad.  Lastly, if
the signal does not correspond to the spectrum display frequency then
go to Options and select, "Swap I ~ Q" and then the signal will appear
at 7415 on the dial.

  What the difference in using these softwares?  Well, if you have
several receivers you know that they can all sound differently and you
might want to change the sound to your ears sometime.  They have a
different tonality to them and this tonality on my PC seems to make
them quite sensitive for use on weak signals just as Alberto's website
is named www.weaksignals.com.  

  I find the Winrad can pull out weak SSB signals somewhat down in the
noise and that I can better hear everyone in the group talking form
around the country.  So it is good for Amateur Radio work and to pull
out those weak shortwave stations running on SSB.  How it is doing this
for me?  I can not say.  I am not the software designer.  But I am
studying about compiling softwares now and maybe one day I'll
understand this stuff.  The electronics is however is fascinating enough.

  So far we have seen a few circuits for 455 kHz and 10.7 MHz pass
through here and a TM or Time Machine transceiver circuit.  Over this
winter I think we are going to get more circuit diagrams and then we
all might have enough simple circuits to start building and even
upscaling.  Analog Circuits and Mini Circuits seem promising with their
chip ideas.  The microwave chip ideas seems also promising for PC
controlled HF receivers.  Some folk are already into designs for such
things.  The simple ideas I have found do not go without some complex
considerations, just like we had all of the concern over phase noise in
VFO ideas earlier here in the group, and they were real issues that had
to be looked at.  Allot of real issues have to be dealt with even in
the minimilist ideas.  Passband responce, IMD, phase stability, etc, etc.

  


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