Comment on Roundup of Software Defined Radios by Anonymous

Siru SDR20
https://siru.fi/software-defined-radio.php

Comment on Es’hail-2: First Geostationary Satellite with Amateur Radio Transponders Successfully Deployed by Rick

Wishing Telesat in Canada would allow the same thing on there geostationary satellites 🛰 over North America. Amateur radio transponders similar to E-Hail . Built by amateur radio university students . So as to promote satellite technology. Congrats to the E-Hail team !. Sure miss AO-10 , AO-13 and AO-40 ! .

Comment on Es’hail-2: First Geostationary Satellite with Amateur Radio Transponders Successfully Deployed by Max

This is opening for the experimenter a new season of TV LNB and maybe power Wi-Fi modifications. And new pieces of commercial ham radio gear on the shelf for all the others 🙂

Es’hail-2: First Geostationary Satellite with Amateur Radio Transponders Successfully Deployed

Today SpaceX have successfully launched and deployed the Es'hail-2 satellite which is now in geostationary orbit. This launch is special for amateur radio enthusiasts because it is the first geostationary satellite that contains an amateur radio transponder on it. The satellite is positioned at 25.5°E which is over Africa. It will cover Africa, Europe, the Middle East, India, eastern Brazil and the west half of Russia/Asia. Unfortunately, North America, Japan, most of South America, Australia and NZ miss out.

Coverage of Es'hail 2
Coverage of Es'hail 2

The satellite has a two bandwidth segments, a 250 kHz narrow band for modes like SSB, FreeDV, CW, RTTY etc, and a 8 MHz wide band for digital amateur TV (DATV) modes like DVB-S and DVB-T.

The downlink frequencies are at 10 GHz so a low cost TV LNB could be used as the antenna. For receiving the narrowband modes, an RTL-SDR or similar SDR could be used, and for the 8 MHz DATV modes a standard DVB-S2 set top box can be used to receive and decode the video. For uplink, the transmission frequency is at 2.4 GHz.

According to the commissioning order of the satellite, it is expected that the AMSAT transponders will be activated only after all tests have been passed, and after other higher priority commercial telecommunications systems have been activated. This is expected to take about 1-2 months.

2018: Es'hail-2 and its amateur radio payload - Graham Shirville (G3VZV) & Dave Crump (G8GKQ)

I will try to keep this brief but I had purchased a rtl-sdr.com LNA and am running the bias tee option. The green indicator light is on but I receive an awful SNR. Is this the case of a faulty unit or did I do something

I will try to keep this brief but I had purchased a rtl-sdr.com LNA and am running the bias tee option. The green indicator light is on but I receive an awful SNR. Is this the case of a faulty unit or did I do something submitted by /u/dominosethiopia
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Comment on Modifying a Laptop by Embedding an RTL-SDR and FunCube Dongle by Mejarkon Saj

My Asus can’t communicate with the latest software and using wrong firmware and any other software. when I install a new one so I might see system error I need tech advice to get useful methods to fix it this and asus live update other bugs.

Comment on RTL-SDR Tutorial: Cheap ADS-B Aircraft RADAR by James

happy to lol

Troubleshooting Help • Re: Driver for «blue» RTL_SDR R820T2 ?

Please follow our install guide at www.rtl-sdr.com/qsg.

Nothing against those box type RTL-SDRs as they do work okay...but they do seem to have a decently higher than normal fault rate, so a hardware fault isn't out of the question.

Statistics: Posted by rtlsdrblog — Fri Nov 16, 2018 7:32 am


RTL-SDR Discussion • Re: installing SDR SHARP

If you're using an RSP with SDR#, note that the new versions will not work with it.

To be safe i'd make a backup of your current folder and keep it safe.

Also, if you want to try the new version, extra the files into a NEW folder, and keep the original safe.

Statistics: Posted by rtlsdrblog — Fri Nov 16, 2018 7:30 am


An Overview of Aircraft Communication Modes from HF to UHF

Over on YouTube icholakov has uploaded an informative video that gives an overview of the main communication modes that aircraft use from HF to UHF. In the video he also gives examples of those modes being received and decoded with an SDR.

The modes that he explains and demonstrates are VHF voice, VHF ATIS automated weather, ACARS short data messages, HF voice, HF automatic weather, HF data selective calling (SELCAL), HF data link (HFDL) and UHF ADS-B aircraft positioning.

Monitoring airplane communications

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