Архив за 25.05.2019

RTL-SDR Discussion • Re: HackRF One and cell phones

Depend what you want to do?
It also depend what the Bandwith of the Freq Spectrum from the Operator is.

Where are you located?

Statistics: Posted by Username — Sat May 25, 2019 10:06 am


Говоря гражданским русским его сопротивление меняется от положения крутилки и только в одной точке может быть от 0 до бо…

ivanovgoga пишет:
Говоря гражданским русским его сопротивление меняется от положения крутилки и только в одной точке может быть от 0 до большого. У нормального аттенюатора сопротивление постоянно от постоянного тока...
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Широкополосный приёмник из DVB донгла - Страница #567

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Goes 16 for Windows?

I have all the hardware to receive goes 16 but i'm really not familiar with linux or Raspberry Pi and would rather use a windows based alternative. However, i'm not sure on where to find one or if even one exists. I would appreciate any help and or feedback from you guys! Thanks!

submitted by /u/trolloftheyear707
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KerberosSDR • Re: Power connection question

Stromeko wrote:
Fri May 24, 2019 6:36 pm
USB-A doesn't (officially) allow for 3A, so most PSU only supply a maximum of 2.4A per port (I have a bunch of those). The obvious non-USB option would have been a barrel plug, but I recognize that these may be more difficult to fit onto the board unless you're going to solder them separately.

Again, finding a supply that just puts out 5V/3A isn't a problem, and a passive adapter to USB-C should then just work. Beware of active adaptors, though; those have switches integrated into the plug that would again remove VBUS if the USB-C end is not properly terminated. I was specifically hoping to use a supply that has a USB-C 3A and three or four USB-A 2.4A outlets, but since that is unlikely to work with the Kerberos I'll have to switch to using multiple PSU for now.
A 2.4A supply is sufficient for the Kerberos power supply, it only really needs a little more than 1A. But for the last few years i've only come across 5V/3A USB-A supplies, never seen a lower one.

The 3A power concern is mostly for the Pi3, which certainly needs the full 3A. 2.4A won't work for the Pi3.

Statistics: Posted by rtlsdrblog — Sat May 25, 2019 5:48 am


That weird signal at 128MHz is back again still don’t know what it is, but now it has an audible pattern. Any ideas?

That weird signal at 128MHz is back again still don't know what it is, but now it has an audible pattern. Any ideas? submitted by /u/GhostlyCrowd
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Decent signal from NOAA 15, 18, and 19; Awful Signal from METEOR M2 — Don’t know what I’m doing wrong

I'm using the SDRSharp with the RTL-SDR kit with the antennas included, and I managed to get a few captures of NOAA 15, 18, and 19. Here's my best one so far: http://prntscr.com/nt2f66 (NOAA 19). Not the best, but decent.

Here's my best capture of METEOR M2: https://prnt.sc/nt2dpv. What the hell am I doing wrong? I'm using the correct frequency (137.900 MHz), bandwidth (120,000), max gain, correct IQ, and the meteor demodulator plugin for SDRSharp and I'm getting that. My signal I'd say is okay, definitely not as good as my NOAA ones (not as much of a difference in dB/less pronounced/less red). Do I just need to get a long, kickass signal for it to work? I can get a decent signal, but because of where I live (trees), I can only keep it for a few minutes, then I lose the lock on for like 15 sec while I try to find it again. Does the signal need to be THAT good? Any tips for holding the antenna? (I'm using the one in the kit, the long ones.) For the NOAA ones I usually just hold it sideways or straight down with the antennae about 120 degrees from each other. For the METEOR signal the only way I could get one is if i held it straight up (same angle), and what I did for the NOAA ones seemed to not work. I don't know how to get a better signal. The guides I'm seeing have signals that are so good and they claim to be using the same antenna as me. Is there anything I could be doing wrong? Thanks.

submitted by /u/xMicro
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My friend just moved into a new house and this is on the roof of the garage, what can we do with it?

My friend just moved into a new house and this is on the roof of the garage, what can we do with it? submitted by /u/DuckEsquire
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Retrieving ADP Encryption Key From XTS Radio

I am needing to recover the ADP encryption key in my XTS5000 as it has been misplaced and need to program other radios that use the key. Is there a way where the key can be recovered via CPS or other proprietary tools? Or should I now be looking at brute forcing the key? I do have an RTL-SDR with all the associated programs as I’ve looked into this method.

submitted by /u/THUG51
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Good ebay listing for Actual R820t dongle?

Does anyone know of a seller still selling r820t dongles for cheap? I've ordered 4 from ebay and 2 from Amazon that have all had FC0012 or FC0013 chips. I know I can just order the official rtl-sdr blog dongles, but I used to be able to order them for ~$9 a piece. Are those days gone?

submitted by /u/3completesthefive
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