Архив за 27.10.2019

RTL-SDR Discussion • Re: V3 and Bias T

Like I said before, I don't really know what I'm doing but...

Doing this made the original instructions work:

CODE:

echo -e 'blacklist rtl2832\nblacklist dvb_usb_rtl28xxu\nblacklist rtl8192cu\nblacklist rtl8xxxu\n' | sudo tee /etc/modprobe.d/blacklist-rtl-sdr2.confsudo reboot
I still want to know the permanently on way since it should be simpler.

Statistics: Posted by Zeek70706 — Sun Oct 27, 2019 8:32 pm


Satellite dish feed design

As any beginner in this field I started by receiving apt from Noaa and then LRPT from meteor. Now as I have a satellite dish laying around I though it would be interesting to try receiving HRPT images. I tried with the default horn feed and I dont get any signal (it should be expected as it is written 10.7-12.75MHz on it, but it was worth the try). So I did some research and apparently the simpler design is an helical feed but I wasn't able to find a clear way to get the dimension of said antenna.

Does an helical feed even need to be tuned to the frequency of my signal? If so how can I calculate the right dimensions?

submitted by /u/Umbb3a20
[link] [comments]

RTL-SDR Discussion • Re: V3 and Bias T

rtlsdrblog wrote:
Tue Oct 22, 2019 9:48 am

To have the bias tee permanently on, replace the drivers with the rtl-sdr-blog version.
What commands do I use to do this? I have tried a few things but have to idea what I'm doing.
I'm starting with a piaware image and wiedehopf graphs.

Statistics: Posted by Zeek70706 — Sun Oct 27, 2019 8:20 pm


RTL-SDR Discussion • Re: RTL SDR driver problem on windows 10

solved thank you

Statistics: Posted by matrix500kv — Sun Oct 27, 2019 7:12 pm


Antennas • Re: MLA-30 what are the perfect, good, best (?!) Settings in SDR#?

So I play arround today and try to receive some usefull.
Stupid Question a Magnetic Loop is a directional Antenna? :oops:

Statistics: Posted by Username — Sun Oct 27, 2019 4:59 pm


KerberosSDR • Re: Direction finding for intermittent signal

Perhaps could we use the "Minimum required power" for intermittent signals such a DMR beacon? Has anybody tried playing with this parameter?

Statistics: Posted by Benjamin73 — Sun Oct 27, 2019 3:00 pm


Comment on An Active Low Cost HF Loop Antenna Made in the UK by Robert

I think it would be interesting to see what the performance would look like with loop being horizontal ???????

RTL-SDR Discussion • Re: AM saturated sound on carriers with SDR #

Please upload a screenshot showing all your SDR# settings. My guess is that it's probably either the bandwidth setting, or saturation on the audio gain.

Statistics: Posted by rtlsdrblog — Sun Oct 27, 2019 11:06 am


Antennas • Re: MLA-30 what are the perfect, good, best (?!) Settings in SDR#?

The main thing is the same as with any other antenna, adjust the RF gain until you achieve maximum SNR for the signal you are listening to.

You can try other settings like noise reduction too.

Other settings will just adjust the visual nature of the waterfall. Just adjust that to your liking. I like to adjust the range to put the noise floor near the bottom of the graph, so that the waterfall resolution is maximized.

Statistics: Posted by rtlsdrblog — Sun Oct 27, 2019 11:04 am


User Projects • Re: Alarms / logging exceeds limits (thresholds)

Thanks,
Plugin installed, going working with it.

Statistics: Posted by Brave Oscar — Sun Oct 27, 2019 7:52 am


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