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Mehdi proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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I don't know if it was a jammer or a local issue with the
@AmsatUK 's WebSDR receiver but I got this on 20:37 UTC CC@uhf_satcom@amsatdlpic.twitter.com/Bc1IKakv5H
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Mehdi proslijedio/la je Tweet
germans: security obsessed, fake facebook name, no twitter, no name in email address also germans: your CV should include a photo, how tall you are, where you were born, and your marital status
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Here's my 160m HF reception in city centre in an apartment using a MLA-30 (Chinese active magnetic loop) with
@SDRPlay RSP1A,@airspy_com HF+ Discovery, and Perseus I wonder how it could have been if I had good antenna and noise free QTH#hamradio#cqww160pic.twitter.com/kRtA0k35uh
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Oh really? At least don't use an expired SSL certificate on your linked website :)pic.twitter.com/IS94lmxoUy
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Does anyone know if these analog delay lines are still used or they are replaced by digital signal processing? (Desoldered them from a VHS recorder)pic.twitter.com/u4h07nOHWq
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@robinlgetz someone said it may be because of LO leakage and Pluto has tricks in its FPGA code to overcome this issue. What do you think?Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Spotted a strange issue while transmitting on
#QO100: With a muted microphone,#PlutoSDR's output is clean, but LimeSDR Mini's has a constant tone! Both configs and setups are identical. Anyone observed a similar thing? I've posted more info and pics here: https://forum.amsat-dl.org/index.php?thread/3159-constant-tone-in-limesdr-mini-output/ …pic.twitter.com/i98hAM4pkG
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I guess I need a bigger dish to be able to exploit its full power
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Finally tested the UMTS/LTE power amplifier on
#QO100 Initial result: 25W output with ~ 300mW input (~19dB amplification) It draws 10A at 27V. These are originally designed for 2.2GHZ. It can produce even more power but that's enough for now.#hamradiopic.twitter.com/OwzpszNfhr
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Mehdi proslijedio/la je Tweet
One seriously unhelpful aspect of infosec Twitter (that I find myself getting dragged into quite often) is everyone trying to give advice on new vulnerabilities and threats as quickly as possible, based on interpreting incomplete public information.
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Mehdi proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Mehdi proslijedio/la je Tweet
The HF spectrum this morning it's full of OTHR HF Radio signals
@SWLingDotCom@i56578_swl@EA4UC@Chris_Diemozpic.twitter.com/O3dHo0sItM
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A 2000F-rated fireproof bag exposed to open fire for 20 seconds
Do not rely on positive reviews on Amazon. They are usually happy with the appearance and price and haven't put the product to real world testspic.twitter.com/3IhrllmddX
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Mehdi proslijedio/la je Tweet
Ok, I have to admit this
@Apple vs.@CorelliumHQ business just doesn’t sit right with me. Let me @@tim_cook and pretend to have some meaningful engagement regarding Apple’s larger security dilemma.#ThreadPrikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Finally managed to have a
#QO100 QSO. Using around 35dBm power and a dual feed antenna from DJ4ZZ my TX was strong and clear. Next step: transmit DATV :)pic.twitter.com/bEKLJJcPWX
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I should think about a heat sink for my Analog Devices
#cn0417 amplifier. Gets hot to around 67 C after 5-10 minutes#QO100pic.twitter.com/M9eVLOsRWh
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Measuring the output of LimeSDR Mini (max drive, SSB @ 2.4GHZ) using
@immersionrc RF power meter & GenComm. Immersionrc is useful and accurate enough for cheap portable#QO100 troubleshooting. Will measure and post the output of my amps and also#plutosdrpic.twitter.com/0cnPLYOBq3
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Doing a 2-port measurement on
@rtlsdrblog's FM band-stop filter with#nanovna and GenComm GC747A. M1 and M4: almost the -6dB point M3: the point with the most attenuation (around 106MHZ) Measurements are pretty similar.pic.twitter.com/cXYIAaTnYb
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Finally I got a proper t&m device (all I got before were entry-level, amateurish) 0-4GHZ spectrum analyser, antenna analyser, power meter, all in one portable package. Thanks to
@FauthNiklas for introducing it, and@DH1TW for help with my questions. Happy Christmas everyonepic.twitter.com/w9HZl3b8mv
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