Search found 103 matches

by aurgathor
Sat Nov 16, 2019 7:03 am
Forum: RTL-SDR Discussion
Topic: distorted FM
Replies: 12
Views: 2729

Re: distorted FM

It used to be OK most of the time with occasional distorted sections, then for testing I brought both the dongle and antenna inside, and it was almost unlistenable when they were inside. Took them outside again, but it's still below what I consider acceptable, so listening to FM stations is off unti...
by aurgathor
Fri Nov 15, 2019 8:56 pm
Forum: Off-Topic
Topic: whatever happened with mirics?
Replies: 4
Views: 2898

Re: whatever happened with mirics?

I understand all these, but my question is: "what happened with them? " Did they cease to exist in one way or another? Or just folded into SDRPlay? As per wayback machine, the content of their website changed to: We are sorry but we do not offer direct support to end users. Please address any querie...
by aurgathor
Fri Nov 15, 2019 7:33 am
Forum: RTL-SDR Discussion
Topic: distorted FM
Replies: 12
Views: 2729

Re: distorted FM

I have deactivated "Filter Audio" and it didn't fix the issue.

I'm still playing with "Bandwidth" and no result on that yet, although I'm leaning toward "no effect".

I just installed SDRUno (latest version), and when I try to start it, it just exits with the below error:

no-rsp.png
no-rsp.png (25.19 KiB) Viewed 1874 times
by aurgathor
Fri Nov 15, 2019 6:58 am
Forum: Other SDR Devices
Topic: SDRplay announces the RSPdx
Replies: 8
Views: 4501

Re: SDRplay announces the RSPdx

> "Hi-Z" is a marketing thing which is usually used for bad design RF frontend. Why? If I understand it correctly, a Hi-Z input makes it easy to connect a long piece of wire and use that as an LW/MW antenna. With a coax, one has to use a balun, or accept a significant mismatch between simple LW/MW a...
by aurgathor
Thu Nov 14, 2019 10:23 pm
Forum: Off-Topic
Topic: whatever happened with mirics?
Replies: 4
Views: 2898

whatever happened with mirics?

The content of http://www.mirics.com/ right now (source): <HTML> <HEAD> <!-- Send users to the new location. --> <BODY> <p>We are sorry but we do not offer direct support to end users. <br> Please address any queries you may have to the supplier of your hardware <br> </BODY> </HTML> I understand tha...
by aurgathor
Thu Nov 14, 2019 7:01 am
Forum: RTL-SDR Discussion
Topic: Where to Purchase Bare Board ??
Replies: 4
Views: 1140

Re: Where to Purchase Bare Board ??

You seriously think you could move all the parts over to a blank board?!? :shock: If you have SMT equipment and some pretty good soldering/desoldering skill you could certainly do that, but if you're skilled enough, then how did you mess up your original dongle? :?: :roll: Personally, I wouldn't bot...
by aurgathor
Wed Nov 13, 2019 7:16 pm
Forum: RTL-SDR Discussion
Topic: distorted FM
Replies: 12
Views: 2729

Re: distorted FM

> It looks like there is some clipping of content between the main signal and those 2 digital sidebands?

I just tried the below station, and it's not better than the other one.   It might even be slightly worse.

distort2.png
distort2.png (572.34 KiB) Viewed 2006 times
by aurgathor
Wed Nov 13, 2019 6:46 pm
Forum: RTL-SDR Discussion
Topic: distorted FM
Replies: 12
Views: 2729

Re: distorted FM

> Have you tried adjusting the bandwidth of the filter? Yes. Makes no obvious difference. > It looks like there is some clipping of content between the main signal and those 2 digital sidebands? Umm, err, I don't think that should be the case, but what can I possibly do with that? > Have you observe...
by aurgathor
Wed Nov 13, 2019 6:25 pm
Forum: RTL-SDR Discussion
Topic: distorted FM
Replies: 12
Views: 2729

distorted FM

Currently, I'm using an RTL-SDR v3 and SDR# to listen to FM radio; however, I have occasional issues with distorted sound and I'm not sure if that's due to low signal level or something else. I tried various settings in SDR# to no avail. The dongle and the antenna are located outside. SDR# uses arou...
by aurgathor
Wed Nov 13, 2019 5:59 pm
Forum: RTL-SDR Discussion
Topic: Listening to FM broadcast with HAM IT UP
Replies: 6
Views: 1425

Re: Listening to FM broadcast with HAM IT UP

As per https://www.nooelec.com/store/ham-it-up.html : "Frequency capability of 100kHz-65MHz in upconvert mode" and the FM band is well above 65 MHz. While I haven't seem one, I bet there is a 65 MHz low pass filter on the ham-it-up's input, and that should explain why it's not working on the way you...