Search found 33 matches

by Ben321
Fri Aug 09, 2019 5:01 am
Forum: Other SDR Devices
Topic: Any good full-duplex SDRs?
Replies: 8
Views: 1550

Re: Any good full-duplex SDRs?

Are you wanting to use it for ham radio? Or experiments? The ones I listed are mostly for experiments. There are many ham radio SDRs that allow full duplex, but of course you pay the ham radio price for a fully developed commercial product. I'm just looking for an easy to use RX/TX full duplex SDR.
by Ben321
Fri Aug 09, 2019 1:52 am
Forum: Other SDR Devices
Topic: Any good full-duplex SDRs?
Replies: 8
Views: 1550

Re: Any good full-duplex SDRs?

Take your pick, there are many LimeSDR, PlutoSDR, bladeRF, USRP etc But an easier way, if bandwidth/freq range isn't an issue, is to just use a cheap RX SDR, like an RTL-SDR for the RX side. USRP devices cost thousands of $$$$$$. BladeRF is almost as expensive. LImeSDR is only a kickstarter type pr...
by Ben321
Fri Aug 09, 2019 1:41 am
Forum: Other SDR Devices
Topic: Anybody have ATSC decoder software for IQ files saved from AirSpy?
Replies: 0
Views: 637

Anybody have ATSC decoder software for IQ files saved from AirSpy?

I have an AirSpy-R2 SDR, and have recorded a few seconds of an ATSC digital TV signal as a WAV file. The WAV file contains the raw IQ samples in 16bit little-endian integer format. I would like to know is this. Is there software out there that I can download that I can use to simply load the WAV fil...
by Ben321
Sat Jul 27, 2019 5:19 am
Forum: Troubleshooting Help
Topic: What is this wideband signal at exactly 432MHz?
Replies: 5
Views: 811

Re: What is this wideband signal at exactly 432MHz?

Maybe. But just a Spike with nohting on it could be anything or nothing. Notice the signals to the left and right of this "spike" that clearly are subcarriers, which are AM modulating the carrier (which is at exatly 432MHz)? That's not a spike, that's a carrier signal of some kind. And the total si...
by Ben321
Sat Jul 27, 2019 5:00 am
Forum: User Projects
Topic: I need some advice in creating IQ processing software
Replies: 5
Views: 810

Re: I need some advice in creating IQ processing software

2.4 million samples per second is not so much, that's pretty normal flow. 40 million samples per second is much harder to process and it really requires optimization. Regarding to FFT, just use FFTW library. On my machine with 64 bit double precision it takes about: - 0.8 ms for 4096 points FFT - 7...
by Ben321
Fri Jul 26, 2019 11:05 pm
Forum: RTL-SDR Discussion
Topic: Multiple SDRs same Application?
Replies: 6
Views: 879

Re: Multiple SDRs same Application?

What you need is a copy of rtlsdr.dll that does NOT just use the first RTL-SDR dongle that it finds, and instead pops up a window that lets you select from a list of RTL-SDR dongles it finds. And then you need to write your own software that supports this added functionality in the special version o...
by Ben321
Fri Jul 26, 2019 10:48 pm
Forum: RTL-SDR Discussion
Topic: GNU Radio isn't working with RTL-SDR
Replies: 2
Views: 627

GNU Radio isn't working with RTL-SDR

I downloaded the latest Windows installer for GNU Radio at http://www.gcndevelopment.com/gnuradio/downloads.htm and installed it. But I can't get it to connect with my RTL-SDR dongle. Whenever I click the button to run the graph I created with the GNU Radio blocks, it stops after a couple seconds, a...
by Ben321
Fri Jul 26, 2019 8:27 pm
Forum: User Projects
Topic: re: just into a new (for me) apt
Replies: 8
Views: 1405

Re: re: just into a new (for me) apt

I guess he need some .dll files who are missing. I had the same "problem". If you don't already have a file called rtlsdr.dll in your SDR# folder, do this: Download this https://osmocom.org/attachments/download/2242/RelWithDebInfo.zip Then in the zip file go either the folder rtl-sdr-release\x86 or...
by Ben321
Fri Jul 26, 2019 8:07 pm
Forum: Other SDR Devices
Topic: Any good full-duplex SDRs?
Replies: 8
Views: 1550

Any good full-duplex SDRs?

Even HackRF is still only half-duplex (can only transmit or receive at a given time). Hopefuly there is something out there that can both send and receive simultaneously. I'm thinking like for radar experiments, or RFID reader, or something similar. Each HackRF is quite expensive, so buying 2 of the...
by Ben321
Fri Jul 26, 2019 8:02 pm
Forum: User Projects
Topic: re: just into a new (for me) apt
Replies: 8
Views: 1405

Re: re: just into a new (for me) apt

I just moved into a new apt in the sticks of West Richland. I now have a fenced yard with a very, very tall oak tree in it. Also I can now put up outside ham antennas. The only restriction is no permanent mounts, like a tower set in concrete. Anyways I am setting up RTL dongel on my Dell laptop. At...