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LU1HVK > RTLSDR 27.09.19 05:20z 113 Lines 5296 Bytes #999 (0) @ WW
BID : 32471_LU1HVK
Read: GUEST
Subj: SDR NEWS PROJECTS 27 09
Path: HB9ON<IW2OHX<IR1UAW<IZ3LSV<DB0ERF<DB0RES<PI8CDR<VE2PKT<N3HYM<WH6FQE<
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Sent: 190927/0515Z 32471@LU1HVK.2594.CBA.ARG.SA LinBPQ6.0.18
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BBS/NODO - CORDOBA (LEONES-FF87UH) - LU1HVK-4 NODO - LU1HVK-3 APRS
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Title : rtl-sdr.com
Title : Electrosense: RTL-SDR Based Crowd Sourced Spectrum Monitoring
with a DC to 6 GHz Up/Downconverter
Content : Recently we came across Electrosense which is an
interesting open source project that aims to deploy radio spectrum
sensors worldwide in order to analyze and understand radio spectrum
usage. This information could be extremely valuable in order to make
more efficient use of the limited radio spectrum, and for detecting
sources of interference and illegal transmissions. The hardware
that Electrosense uses consists of just an RTL-SDR, Raspberry Pi,
antenna and an optional GPS for time synchronization.
Title : Building An Open Source SDR Based Hydrogen Line Radio
Telescope
Content : Over on Reddit we've seen a post
by u/ArtichokeHeartAttack who has been working on a hydrogen line
radio telescope , based on an RTL-SDR dongle and horn antenna designs
by the DSPIRA program , and the Open Source Radio Telescopes
website (site appears to be down, linked to the archive.org
copy). [ u/ArtichokeHeartAttack ] has documented their radio
telescope building journey , providing a comprehensive top-level
document that is able to point interested people in the right
direction towards understanding and building their own Hydrogen
line radio telescope.
Title : Leif Continues his Comparisons of the Airspy HF+ Discovery,
RSP1, Perseus and More SDRs
Content : Leif (SM5BSZ) is fairly well known in the SDR community
for doing very indepth technical tests of various SDR receivers
over on his YouTube channel. Recently he's released part two of
a series where he compares the new Airspy HF+ Discovery against
various other SDRs such as the Perseus, SDRplay RSP1, Airpsy HF+
Dual, Airspy + SpyVerter and AFEDRI SDR-Net. In the first video
he studied the blocking and second order intermodulation effects
of each SDR using signal generators. We summarized those results
in this previous post .
Title : PREORDER SALE: Active L-Band 1525-1637 Inmarsat to Iridium
Patch Antenna Set For $34.95
Content : Over the last several months we've been working on a
versatile active L-band patch antenna that can cover Inmarsat to
Iridium satellite frequencies. That antenna is now almost ready,
and should be able to ship out from our Chinese storage warehouse
by week 1 or 2 of October. No other components like filters or
amplifiers are required to be able to use this antenna, as it is
an all in one system.
Title : Monitoring 3D Printer Filament Moisture with an RTL-SDR
and rtl_433
Content : Over on Hackaday we've seen a post about Scott
M. Baker's 3D printer filament drying farm that is monitored by a
433 MHz ISM band sensor and an RTL-SDR running rtl_433. If you're
familiar with 3D printing then you'll know that it is critical to
keep the plastic filament free from absorbing moisture, otherwise
it can cause all sorts of issues when it comes time to print
something.
Title : Vancouver Broadcasts Hospital Patient Data Over Unencrypted
Wireless Pagers
Content : Canadian based researchers from the "Open Privacy Research
Society" recently rang the alarm on Vancouver based hospitals who
have been broadcasting patient data in the clear over wireless
pagers for several years. These days almost all radio enthusiasts
know that with a cheap RTL-SDR, or any other radio, it is possible to
receive pager signals, and decode them using a program called PDW
. Pager signals are completely unencrypted, so anyone can read the
messages being sent, and they often contain sensitive pager data.
Title : Decoding the ARES Train Protocol with an RTL-SDR
Content : Over on YouTube user JellyImages has uploaded a video
demonstrating his Windows based ARESrcvr software. ARES is a railway
control communications protocol used by some trains in the USA.
His code connects to an RTL-SDR dongle, and demodulates the
ARES protocol, providing decoded packets to ATSCMon via UDP on
localhost.
Title : Exploring the Limits of General Purpose SDR Devices
Content : Back in August 2019 the Chaos Communication Camp was
held in Germany. This is a 5 day conference that covers a variety of
hacker topics, sometimes including SDR. At the conference Osmocom
developer Harald Welte (aka @ LaF0rge ) presented a talk titled
"The Limits of General Purpose SDR devices". The talk explains how
general purpose TX capable SDRs like HackRFs and LimeSDRs have their
limitations when it comes to implementing advanced communications
systems like cellular base stations.
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| Saludos cordiales 73dx - Victor Hugo (LU1HVK) Leones - Cordoba - Argentina |
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| lu1hvk@qsl.net |
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