[NLRS] SBMS monthly meeting Thursday 9PM CDT
Doug Reed
n0nas at amsat.org
Sat Apr 6 00:56:10 EDT 2019
<https://eshail.batc.org.uk/nb/>
BATC has put up a dedicated WebSDR receiver for Quatar Oscar 100
(QO-100) and is streaming the result. One stream is the narrowband
portion of the satellite downlink, the other stream is the wideband
(Digital ATV) side of the downlink. What I found most surprising is
that at 9PM local time, which would be early AM in Europe, the
narrowband downlink is empty except for two band edge beacon
signals.... I would have expected some activity 24hrs a day..... Maybe
it is too early for more adoption?
<https://forum.amsat-dl.org/index.php?thread/7-modification-of-octagon-oslo-pll-lnb-for-external-frequency-reference/>
Also found an interesting Tweet by G0MRF about installing a
Connor-Winfield 'D75F' 27MHz 0.5PPM SMD TCXO (Digikey CW655CT-ND $15)
into a LNBC to get adequate stability for narrowband modes from QO-100
10GHz downlink. I assume this could include a little insulation or
possibly a PTC heater for Minnesota weather and should be good for
terrestrial SSB also....
73, Doug.
--
Scientists say the world is made up of protons, neutrons, and electrons.
They forgot to mention MORONS.
She had buried three husbands and at least two of them had been already dead.
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