Архив за 21.09.2019

Hydrogen Line telescope made by a HS teacher and former student. There are some great assembly guides out there, but we also created a document gathering horn dimensions, amplification setup, calculations, etc. from lots of sources into one place.

Hydrogen Line telescope made by a HS teacher and former student. There are some great assembly guides out there, but we also created a document gathering horn dimensions, amplification setup, calculations, etc. from lots of sources into one place. submitted by /u/ArtichokeHeartAttack
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Comment on SDRSharp Community Plugin Package Now Available by Colin 2E0YRT

I had the same problem. Kept crashing. I solved it by deleting these plugins I had not heard of: FrequencyLock / mpx / tv /calico / fft grabber / gpredictconnector / magiceye / net remote / omnigrig sync / snr logger. Dont know which one was causing the problem though

NOAA-19 APT SNR:44dB 137.1Mhz 16:52 — East evening pass captured with AIRSPY R2 device😃🛰️

NOAA-19 APT SNR:44dB 137.1Mhz 16:52 - East evening pass captured with AIRSPY R2 device😃🛰️ submitted by /u/Macak787
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NOAA reception problem: vertical stripes on both channels

Hi! Otherwise i am quite happy with the image, but where do these vertical lines come from?They look like shadows of the telemetry-data.

At the end of the pass, i reduced the gain a little bit, but then the signal got too weak, and some seconds later the satellite was out of sight.

Where the horizontal dark stripe is, i tested lowering the volume.

i use an NooElec dongle with an uputronics-LNA. Usually i don't have these stripes, but on the next pass of a different NOAA they were again visible.

Any ideas?

edit: image vanished, please see here: https://imgur.com/a/6qAXsik

submitted by /u/MaximKammerer
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Build your own rfid?

I am wondering if I can make my own RFID system without buying all of the expensive hardware. The only system requirements is that I need it to be long range (10-50 meters). The only data that I need to receive is a unique identifier.

If a remote control car can communicate long range and give controls at a low cost, why is it 1000s of dollars to buy a system like this?

submitted by /u/InfoSecEngineer
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My best noaa image so far

My best noaa image so far submitted by /u/ZbychuButItWasTaken
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Troubleshooting Help • inter-board jumpers

Trying to get board calibrated, but had problems with port 1. In the process of troubleshooting I determined the the coax jumper from the calibration network board to the SDR module was pinched between the case and broken. Any idea for a suitable replacement? Or can I purchase one? Not sure if it was from the factory this way or I goofed up.

Statistics: Posted by ReadyKilowatt — Sat Sep 21, 2019 7:53 pm


KerberosSDR • Re: New version of kerberosSDR app

I installed it on an Amazon Fire Tablet - it is at Lollipop. I believe that is around Android Version 5.1 ... Of course then I recalled that those tablets rely on WiFi alone for location (no true gps!!) Back to the point.... shows in the play store and installs for earlier version Android - I believe you have success. I will test as soon as I get a charge on an older phone....

Statistics: Posted by myke — Sat Sep 21, 2019 7:44 pm


Help! I can not pick up anything on any noaa satellite pass. There was supposed to be a 70° pass over my town and cannot pick up anything. I have tried a few times with no luck. Any help?

Help! I can not pick up anything on any noaa satellite pass. There was supposed to be a 70° pass over my town and cannot pick up anything. I have tried a few times with no luck. Any help? submitted by /u/FIZZY_USA
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Атом у меня есть, я даже и не пытался к нему. На авито есть в десятку ценой, вот и думаю.

Voevoda пишет:
Атом у меня есть, я даже и не пытался к нему. На авито есть в десятку ценой, вот и думаю.
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Широкополосный приёмник из DVB донгла - Страница #575

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