Search found 17 matches

by RCND
Mon Jan 21, 2019 10:13 pm
Forum: RTL-SDR Discussion
Topic: new rtl-sdr (RTL2832U) not hearing or seeing any ham radio on spectrum
Replies: 5
Views: 14197

Re: new rtl-sdr (RTL2832U) not hearing or seeing any ham radio on spectrum

Hello: Do you have the dipole antenna kit? If so, can you receive broadcast FM? If you can you should be able to receive 2 meters. If you meant 70 cm instead of 70 meters the dipole kit will also work Here is an info page https://www.rtl-sdr.com/using-our-new-dipole-antenna-kit/ For 70 meters you wi...
by RCND
Fri Jan 18, 2019 12:39 am
Forum: RTL-SDR Discussion
Topic: RTL-SDR v3 VERY HOT and poor reception
Replies: 5
Views: 14449

Re: RTL-SDR v3 VERY HOT and poor reception

Hello: My first one worked at first but over time it started cutting out in HF, but would still work in broadcast FM. It finally gave up the ghost and now just gets very, very hot. They do run very warm but not enough to burn you. rtlsdrblog replaced mine with no problems. Very good to work with and...
by RCND
Thu Jan 17, 2019 3:17 am
Forum: RTL-SDR Discussion
Topic: Please Help. GQRX and SDR-RTL V3 for HF reception
Replies: 3
Views: 8191

Re: Please Help. GQRX and SDR-RTL V3 for HF reception

Hello:

Have you run the volk_profile in the terminal? This optimizes the Gqrx software.

For HF use, other, and then the rtl=0,direct_samp=2 or the rtl=0,direct_samp=3 string.

Should work then.
by RCND
Thu Jan 03, 2019 8:09 pm
Forum: RTL-SDR Discussion
Topic: Nooelec SDR not receiving AM
Replies: 5
Views: 2497

Re: Nooelec SDR not receiving AM

Hello:

I am not familiar with Mac. That said the volk_profile should be part of the Gqrx program.

Go to your command terminal and just type volk_profile. It should start running, it takes a while to complete.

Robert
by RCND
Thu Jan 03, 2019 7:48 pm
Forum: RTL-SDR Discussion
Topic: Unknown broadcast/tuning method?
Replies: 2
Views: 1468

Re: Unknown broadcast/tuning method?

Hello:

Some of the overseas stations have really bad modulation.

Robert
by RCND
Tue Jan 01, 2019 12:57 am
Forum: RTL-SDR Discussion
Topic: Nooelec SDR not receiving AM
Replies: 5
Views: 2497

Re: Nooelec SDR not receiving AM

Hello:

As tim_rtd said run the volk_profile.

I had the same problem with Gqrx on my Raspberry Pi, that did the trick.

Robert
by RCND
Tue Jan 01, 2019 12:27 am
Forum: RTL-SDR Discussion
Topic: RTL-SDR V3 long wire problems (SOLVED)
Replies: 12
Views: 4698

Re: RTL-SDR V3 long wire problems (SOLVED)

Hello All: The SMD is a ESD protection device. It is a varistor on the 50 Ohm side of the Balun. The SDR must have a ground for this device to protect it. There is no ESD drain resistor on the antenna side as shown in their schematic. For a long wire antenna, there is a trace on the bottom of the ba...
by RCND
Sun Dec 23, 2018 6:17 pm
Forum: RTL-SDR Discussion
Topic: RTL-SDR V3 long wire problems (SOLVED)
Replies: 12
Views: 4698

Re: RTL-SDR V3 long wire problems (SOLVED)

RTL-SDR.com Sent me a replacement even though I had purchased the old one back in April.

This is a Company that stands behind it's products.

BTW problem solved.

Robert
by RCND
Sun Dec 23, 2018 5:58 pm
Forum: RTL-SDR Discussion
Topic: RTL-SDR Malfunction?
Replies: 7
Views: 7710

Re: RTL-SDR Malfunction?

Hello All: RTL-SDR.com just sent me a new V3 Dongle and it works perfectly. May just be luck of the draw. One thing you can try is downloading the Skywave Linux OS. Burn it to a DVD. It can also be put on a USB thumb drive but this may interfere with the Dongle's USB port. It will run live from the ...
by RCND
Sat Dec 22, 2018 12:59 am
Forum: RTL-SDR Discussion
Topic: Taking down drones
Replies: 2
Views: 1499

Re: Taking down drones

Hello Greg: I don't think as citizens we can legally transmit jamming signals. Could get us in big trouble even for the right reasons. One thing that I read today that is really scary, is that groups like ISIS are using cell phones as the control receivers. This means digital encoding, frequency shi...