Search found 26 matches

by Corrosive
Wed Jun 26, 2019 12:58 pm
Forum: Troubleshooting Help
Topic: rtl-sdr lna problem
Replies: 8
Views: 1237

Re: rtl-sdr lna problem

The LNA is very wide, more than likely it's being overloaded by nearby FM broadcast. While an LNA is a "low noise" amplifier it does amplify noise as well, if there is enough of it that will hinder reception. If you can either get a band pass filter that only allows 137 for APT or at the very least ...
by Corrosive
Tue May 21, 2019 3:20 pm
Forum: RTL-SDR Discussion
Topic: Freqs To Try, Please ?
Replies: 2
Views: 596

Re: Freqs To Try, Please ?

NOAA wx terrestrial transmissions. They are 24/7 around 162 MHz nation wide.
by Corrosive
Tue May 07, 2019 5:17 pm
Forum: KerberosSDR
Topic: Direction finding issue
Replies: 5
Views: 1001

Re: Direction finding issue

There is really not enough information in your video to be able to provide much help in the matter.
Can you make another video showing the entire setup?

Antennas, distance, settings and signal source would be very helpful.
by Corrosive
Tue Apr 09, 2019 7:41 pm
Forum: KerberosSDR
Topic: Results SDR Use Only - SN #'s?
Replies: 5
Views: 994

Re: Results SDR Use Only - SN #'s?

kb3cs wrote:
Tue Apr 09, 2019 1:31 pm
be careful! see https://github.com/rtlsdrblog/rtl-sdr-kerberos/issues/2
Yeah be careful for sure, if you're going to proceed anyway I'd suggest doing them one at a time and not having all four turned on at once.
by Corrosive
Mon Apr 08, 2019 5:55 pm
Forum: KerberosSDR
Topic: Share your results
Replies: 19
Views: 2932

Re: Share your results

Initial bench test: I'm able to reproduce the Linear test same as https://www.youtube.com/watch?v=HE1BFeteBo0 I'm using a 915MHz Dipole on a metal ground plane with antennas spaced a 9.8cm. Using an HP8920A for Tx 904.28MHz @ 5KHz dev with a 1KHz tone. Once the BW, FIR and Decimation are right the ...
by Corrosive
Mon Apr 08, 2019 4:22 pm
Forum: KerberosSDR
Topic: Share your results
Replies: 19
Views: 2932

Re: Share your results

During my test I used my HackRF to create a SSTV signal. If you are in an area with a digital trunked radio system you could also try it out with the control channel frequency. I was able to successfully locate a tower site with that method. You'll want to make sure when you set your frequency and s...
by Corrosive
Sun Mar 31, 2019 3:29 pm
Forum: RTL-SDR Discussion
Topic: Is my RTL-SDR working ?
Replies: 2
Views: 797

Re: Is my RTL-SDR working ?

For shits and giggles turn your gaines to about 39 each.
by Corrosive
Sat Mar 30, 2019 11:32 pm
Forum: RTL-SDR Discussion
Topic: Question about BIAS-TEE in V3
Replies: 5
Views: 1005

Re: Question about BIAS-TEE in V3

Just buy a stand alone bias-t and inject voltage after the splitter. https://www.ebay.com/itm/Bias-Tee-Wideband-10-6000-MHz-6GHz-for-HAM-radio-RTL-SDR-LNA-Low-Noise-Amplifier/322365135389?epid=17021762201&hash=item4b0e759a1d:g:hLoAAOSwFy5bWIxN Bought one of those for china and works fine for my needs.
by Corrosive
Sat Mar 30, 2019 9:04 pm
Forum: KerberosSDR
Topic: Sources for antennas?
Replies: 17
Views: 2754

Re: Sources for antennas?

I bought 4 of these, certainly not the best quality.

https://www.ebay.com/itm/5dBi-SMA-Male- ... 2749.l2649

They do get the job done for mobile work.
by Corrosive
Fri Mar 29, 2019 1:38 pm
Forum: KerberosSDR
Topic: Trouble connecting the RPi3 to the KSDR
Replies: 17
Views: 2481

Re: Trouble connecting the RPi3 to the KSDR

Got Ubuntu installed, and had successfully gotten connected (well it locks up the entire OS after about 5 minutes though that's not the ksdrs fault obviously) so it is a problem with the Pi. Likely power related as mentioned before. I'll hook a screen up to the pi and see whats going on. Hopefully ...