Search found 2890 matches

by rtlsdrblog
Wed Apr 14, 2021 11:03 am
Forum: RTL-SDR Discussion
Topic: Theoretical questions
Replies: 2
Views: 426

Re: Theoretical questions

Please consult the guide at www.rtl-sdr.com/ksdr You need to perform sample and IQ sync first after booting the Kerberos, or after changing frequency. This is to achieve phase coherence. For FIR filtering, the value is how "tight" or "sharp" the filter is. Basically how rectangular it is. The gain w...
by rtlsdrblog
Wed Apr 14, 2021 10:58 am
Forum: RTL-SDR Discussion
Topic: Stability Issue using Nooelec Up Converter ?.
Replies: 1
Views: 422

Re: Stability Issue using Nooelec Up Converter ?.

What upconverter do you have? By using an SDR + upconverter you're doubling the potential drift. Make sure both have a TCXO, and keep the ambient temp stable.

Those all in one units will probably drift much worse, as they usually do not have a TCXO.
by rtlsdrblog
Wed Apr 14, 2021 10:57 am
Forum: RTL-SDR Discussion
Topic: RTL2832U work with Rpi Zero WH or other low power alternatives?
Replies: 1
Views: 392

Re: RTL2832U work with Rpi Zero WH or other low power alternatives?

A Pi Zero should be able to run the dongle but without any sort of graphics or advanced processing. rtl_power should work.
by rtlsdrblog
Wed Apr 14, 2021 10:55 am
Forum: RTL-SDR Discussion
Topic: RTL_SDR Reciever R820T2 USB Tuner 100KHz-1.7GHz UV HF device having problems reading the device using MacBook Pro
Replies: 1
Views: 395

Re: RTL_SDR Reciever R820T2 USB Tuner 100KHz-1.7GHz UV HF device having problems reading the device using MacBook Pro

Can you test on another computer without the adapter? That type of error usually indicates some problems with the dongle talking to the USB. Sometimes caused by bad USB cables/adapters.
by rtlsdrblog
Wed Apr 14, 2021 10:54 am
Forum: RTL-SDR Discussion
Topic: broken microusb kerberossdr
Replies: 1
Views: 235

Re: broken microusb kerberossdr

Contact us at [email protected]
by rtlsdrblog
Wed Apr 14, 2021 10:51 am
Forum: RTL-SDR Discussion
Topic: New L-Band Patch Antenna Question
Replies: 2
Views: 252

Re: New L-Band Patch Antenna Question

If the signal is strong then yes it will still see it, but as you're probably dealing with weak radiosonde signals it won't be the best choice.
by rtlsdrblog
Wed Apr 14, 2021 10:49 am
Forum: Troubleshooting Help
Topic: Receiving NFC signals from contactless card - 13.56MHz HF
Replies: 3
Views: 1201

Re: Receiving NFC signals from contactless card - 13.56MHz HF

14.4 MHz is the Nyquist zone cutoff point, so things can get a bit funky around that frequency. This might be a case where an upconverter with an amplifier is required. You could also try disconnecting the VHF/UHF path by removing C13 (next to D6 by the MCX connector). That might stop some signal l...
by rtlsdrblog
Wed Apr 14, 2021 10:47 am
Forum: Troubleshooting Help
Topic: Error message when SDR# won't start windows 10
Replies: 1
Views: 307

Re: Error message when SDR# won't start windows 10

You've selected the TCP interface instead of the USB one. Scroll down on the device list.
by rtlsdrblog
Wed Apr 14, 2021 10:46 am
Forum: Troubleshooting Help
Topic: Displayed QRG correction.
Replies: 1
Views: 250

Re: Displayed QRG correction.

You can edit the PPM offset in the configure box, which is the same box with the RF settings.
by rtlsdrblog
Wed Apr 14, 2021 10:45 am
Forum: Troubleshooting Help
Topic: Airspy (SDR sharp) Play WAV / IQ file preview missing...
Replies: 1
Views: 197

Re: Airspy (SDR sharp) Play WAV / IQ file preview missing...

You might be comparing the standard edition with the community edition. The last image shows vasili's file player plugin which can be found on rtl-sdr.ru