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LU9DCE > RTLSDR 23.07.19 14:03z 107 Lines 4815 Bytes #999 (0) @ WW
BID : 28896_LU9DCE
Read: GUEST
Subj: SDR NEWS/PROJECTS 23 07
Path: HB9ON<IK7NXU<IK6IHL<IZ3LSV<IW0QNL<JH4XSY<N3HYM<WH6FQE<GB7YEW<LU9DCE
Sent: 190723/1401Z 28896@LU9DCE.TOR.BA.ARG.SOAM LinBPQ6.0.18
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ESTACION DE PACKET RADIO - BUENOS AIRES (GF05OM)
BOLETINES INFORMATIVOS PROGRAMADOS (BIP)
SLACKWARE LINUX - HELLOCODELINUX@GMAIL.COM
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Title : rtl-sdr.com
Title : Atomic Radio: Quantum Laser Based Radio Reception
Content : Software defined radio (SDR) is a relatively new
technology that has impacted the world of radio technology in many
ways. But beyond SDR, there are still some other very interesting
radio technologies being worked on, such as "Atomic Radio" a.k.a
"Quantum Radio".
Title : Slow Scan Moon Bounce Event for 50th Anniversary of the
Moon landing
Content : Fifty years ago Neil Armstrong became the first man
to step foot on the moon. This weekend on June 20th and 21st 2019
Amateur Radio operators at the [ PI9CAM ] team have been transmitting
Slow-Scan Television images in commemoration of this historic event
at the Dwingeloo radio astronomy station in the Netherlands. This
station is the oldest rotatable 25-meter radio telescope in the
world.
Title : Weather Satellite Meteor M2-2 Now Transmitting Images
Content : Reports from Reddit and Twitter are in that the recently
launched Meteor M2-2 weather satellite is now functional and
broadcasting images at 137.9 MHz. A few people have noted that the
reception quality appears to be better than the older satellite.
Title : PICTOR: An Open Source Low Cost Radio Telescope based
on RTL-SDR
Content : PICTOR is an open source and open hardware radio
telescope that aims to promote radio astronomy on a budget. It
consists of a 1.5 meter parabolic dish antenna, 1420 MHz feedhorn, a
two stage low noise amplifier (LNA), high pass filter, and from what
we gather, an RTL-SDR. Future designs may also use higher bandwidth
SDRs. Currently there doesn't seem to be much information about the
build and exact components used in their design, but we're hoping
that those details will come in time.
Title : A Low Cost 2.4 GHz Downconverter from off the Shelf Dev
Boards
Content : Over on GitHub Ian Wraith has released his design and
microcontroller code for a low cost 2.4 GHz downconverter circuit
. A downconverter is a hardware device that shifts the signals that
it receives into a lower frequency band. This is useful in the case
of RTL-SDRs and Airspy SDRs, as their maximum frequency range is
only 1.7 GHz. Ian's 2.4 GHz downconverter reduces those 2.4 GHz
signals down to 1 GHz, which can then be received with his Airspy.
Title : SignalsEverywhere: Improving HF Reception with Impedance
Matching
Content : This week on the SignalsEverywhere YouTube channel
host Corrosive explores why impedance matching matters when trying
to obtain the best reception possible. To do this he reviews the
NooElec 1:9 Balun, which is designed to convert the (roughly)
450 Ohm impedance of a long wire antenna or ladder line dipole
back down to 50 Ohms, which is the standard impedance that an SDR
expects. Small amounts of impedance mismatch are negligible for RX,
but larger mismatches can result in poor reception.
Title : Investigating the Galileo Satellite Navigation System Outage
with a LimeSDR
Content : Galileo is a European Union owned satellite navigation
system. Galileo was created so that the EU does not need to rely
on the US GPS or the Russian GLONASS satellites, as there is no
guarantee that these systems won't be purposely turned off or
degraded by their governments at any time.
Title : Upcoming KerberosSDR Software Updates: Automatically Estimate
TX Location and Navigate There
Content : KerberosSDR is our 4x Coherent RTL-SDR that we've
developed together with Othernet. It can be used for tasks such as
direction finding and passive radar. KerberosSDR was successfully
crowdfunded over on Indiegogo, and the first batch has already
been shipped. Currently we are taking discounted pre-orders
for a second production batch on Indiegogo . Please note that the
discounted pricing will expire when we ship, which according to
the manufacturing schedule should be next month, so please get in
quick if you're interested!
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Politician, n.:
From the Greek "poly" ("many") and the French "tete" ("head" or
"face," as in "tete-a-tete": head to head or face to face). Hence
"polytetien", a person of two or more faces.
-- Martin Pitt
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