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LU9DCE > RTLSDR   24.05.19 14:04z 108 Lines 4988 Bytes #999 (0) @ WW
BID : 25279_LU9DCE
Read: GUEST
Subj: SDR NEWS/PROJECTS 24 05
Path: HB9ON<IW0QNL<JH4XSY<N3HYM<LU9DCE
Sent: 190524/1400Z 25279@LU9DCE.TOR.BA.ARG.SOAM LinBPQ6.0.18

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               ESTACION DE PACKET RADIO - BUENOS AIRES (GF05OM)
                   BOLETINES INFORMATIVOS PROGRAMADOS (BIP)
              28.125 USB @ 300 BAUD --- HELLOCODELINUX@GMAIL.COM

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Title : rtl-sdr.com

Title : Airspy HF+ Discovery Now Available for Preorder + Brief
Initial Review

Content :  The Airspy team have recently announced the  release
of their new "Airspy HF+ Discovery" . The Discovery is a smaller,
lighter and improved version of the Airspy HF+. The frequency
range, bandwidth and bit depth and specs all remain the same,
but there are some improvements to the dynamic range due to the
addition of preselectors. The original Airspy HF+ was released
back in mid-2017 and it still is in our opinion one of the best
low cost HF DX SDRs because of its very high dynamic range design,
so strong interfering signals are not much of a problem. We have a
previous review of the Airspy HF+ available here  were we compare
it against a number of other HF SDRs. 

document.addEventListener("DOMContentLoaded", function(event) { 

Title : Short Article Explaining DSP Basics Without Math

Content :  If the math behind software defined radio and digital
signal processing (DSP) concepts does your head in, the RSGB has a
short document that explains core DSP concepts without any math. If
you're just looking for an overview of what terms like sampling,
nyquist, aliasing, number of bits, undersampling, digital filters
and fast fourier transform mean, then this short article is a great
start. 

Title : A More In-depth Look at the Tunisian RTL-SDR Espionage Story

Content :  The Africa Report, an online newspaper specializing in
African stories  recently ran a story titled "A Tunisian spy story"
. The story discusses the circumstances behind the mysterious arrest
of a UN expert in Tunisian, supposedly for having used an RTL-SDR
dongle as part of his research into violations of the UN arms
embargo on Libya. See our  previous post  for the original details. 

Title : SignalsEverywhere: P25 Trunking with Just One RTL-SDR and
DSDPlus Fastlane

Content :  Over on YouTube Corrosive from the  SignalsEverywhere
channel has uploaded a new video showing us how to set up P25
trunking and decoding with DSDPlus Fastlane and only a single
RTL-SDR. 

Title : Osmocom Now Releasing Weekly Windows Binaries for RTL-SDR
and Osmo-FL2K

Content :  Osmocom is the open source team behind the RTL-SDR driver
project and the Osmo-FL2K discovery. In a recent  announcement they
have noted that they are now publishing weekly binary builds for
the RTL-SDR and Osmo-FL2K projects . This means that Windows users
are now able to test the latest driver updates without having to
compile them manually. Laforge writes: 

Title : Stratux 1090 MHz + 978 MHz Diplexer Now Available

Content :  Recently the company Stratux  released a new ADS-B/UAT
diplexer PCB . This is useful if you have a single antenna and want
to feed two RTL-SDR dongles, with one receiving 1090 MHZ ADS-B and
the second receiving 978 MHz UAT. The filter consists of a splitter
and two SAW filters. 

Title : Demonstrating HFDL Reception with a Cloud-IQ SDR and MultiPSK

Content :  Over on YouTube user  Shortwave Bavaria  has uploaded
a video that demonstrates HFDL reception. HFDL is short for High
Frequency Data Link and is a signal used by aircraft to communicate
short messages with ground stations over long distances. It is
often used in place of VHF ACARS when flying over oceans. 

Title : Spoofing Aircraft Instrument Landing Systems with an SDR

Content :  Recently Arstechnica ran an in depth story about how
a $600 USRP  software defined radio could be used to trick an
aircraft that is making use of the Instrument Landing System (ILS)
. ILS is a radio based system that has been used as far back as
1938 and earlier. It's a very simple system consisting of an array
of transmitter antennas at the end of a runway and a radio receiver
in the aircraft. Depending on the horizontal and vertical position
of the aircraft, the ILS system can help the pilot to center the
aircraft on the runway, and descend at the correct rate. Although
it is an old technology, it is still in use to this day as a key
instrument to help pilots land especially when optical visibility
is poor such as at night or during bad weather/fog. 


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Idiot, n.:
	A member of a large and powerful tribe whose influence in human
affairs has always been dominant and controlling.
		-- Ambrose Bierce, "The Devil's Dictionary"

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