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LU1HVK > RTLSDR 09.07.20 10:25z 106 Lines 4735 Bytes #999 (0) @ WW
BID : 51845_LU1HVK
Read: GUEST
Subj: SDR NEWS PROJECTS 09 07
Path: HB9ON<IW8PGT<IZ3LSV<DB0ERF<OK0NAG<F3KT<EA2RCF<LU9DCE<N7HPX<LU1HVK
Sent: 200709/1008Z 51845@LU1HVK.2594.CBA.ARG.SA LinBPQ6.0.19
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BBS/NODO - CORDOBA (LEONES-FF87UH) - LU1HVK-4 NODO - LU1HVK-3 APRS
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Title : rtl-sdr.com
Title : Imaging the Milky Way in Neutral Hydrogen with an RTL-SDR
Part 2
Content : Last month we shared information about Job Geheniau's
success with using an RTL-SDR dongle to image our galaxy in neutral
Hydrogen. Our galaxy is full of neutral Hydrogen, and lots of
neutral Hydrogen together results in a detectable radio peak at
1.42 GHz. This peak is called the Hydrogen line. By scanning the
galaxy at the Hydrogen line frequency with a 1.5 meter dish on a
motorized mount, an RTL-SDR, and a few filters and LNAs, Job is
able to create a radio image of our galaxy.
Title : An Introduction to Radio Trunking Systems with a Focus on
P25 and SDR Trunk
Content : Thank you to Carl Makin (VK1KCM) for submitting a video
that he produced for his local ham radio club in Australia. In the
video Carl first gives an overview on radio trunking systems and
explains why they are used to improve spectrum efficiency.
Title : A Simple Guide to Setting up a DIY NOAA Weather Satellite
Ground Station
Content : A few weeks ago we posted about Sophie Dyer and
Sasha Engelmann's work in creating an artistic performance based
on weather satellite reception with SDRs. More recently they
have uploaded their own tutorial showing how they receive NOAA
APT weather satellite images with an SDR, turnstile antenna and
computer. Sasha and Sophie note that they are attempting to create
visually rich guides that don't assume any prior knowledge of radio,
science or engineering.
Title : Guest Post: So you’ve bought an RTL-SDR, now what?
Content : Thank you to Merlin from the SignalsEverywhere discord
channel for writing this guest post.
Title : Step-by-step Guide to Creating a GNU Radio Based QO-100
SSB Receiver
Content : Thank you to M Khanfar for submitting his video that
shows a step-by-step tutorial on building your own SSB receiver in
Windows GNU Radio for QO-100 satellite reception. His tutorial
includes adding several tuning sliders in the GNU Radio GUI as
well.
Title : Frugal Radio: 2020 SDR Guide Ep 1 – The Incredible
World of Software Defined Radio (RTL-SDR, Airspy, SDRPlay etc.)
Content : Frugal Radio has begun his YouTube channel a few weeks
ago, and we've already posted about his YouLoop and SDR-Kits
L-band patch antenna reviews as well as his results with the
YouLoop on LF & VLF .
Title : SDRA2020 Online Conference Videos
Content : The Software Defined Radio Academy is an organization
that holds a conference within the yearly HAMRADIO fair
in Friedrichshafen, Germany. This year due to the pandemic the
conference was held online, and recently videos from the various
talks have begun to slowly get uploaded to their YouTube channel .
Title : Characterizing Yagi Antenna Directionality via ADS-B
Reception
Content : Over on his blog Alex Krotz has been investigating
whether adding more passive director elements actually affects the
directionality of his home made Yagi-Uda antenna . Instead of using
modelling software, Alex wanted a more accurate result that took
into account all the imperfections of his antenna.
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Courage is resistance to fear, mastery of fear--not absence of fear. Except a
creature be part coward it is not a compliment to say it is brave; it is
merely a loose misapplication of the word. Consider the flea!--incomparably
the bravest of all the creatures of God, if ignorance of fear were courage.
Whether you are asleep or awake he will attack you, caring nothing for the
fact that in bulk and strength you are to him as are the massed armies of
the earth to a sucking child; he lives both day and night and all days and
nights in the very lap of peril and the immediate presence of death, and yet
is no more afraid than is the man who walks the streets of a city that was
threatened by an earthquake ten centuries before. When we speak of Clive,
Nelson, and Putnam as men who "didn't know what fear was," we ought always
to add the flea--and put him at the head of the procession.
-- Mark Twain, "Pudd'nhead Wilson's Calendar"
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Organizacion Radio Packet Argentina https://vk.com/ax25packet
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