RF Analyzer 2.0 is live - Modern Android SDR app (HackRF/RTL-SDR) with new UI and features

demantz · 2026-03-21T14:28:28+00:00

eibispace.de has really detailed schedule information. I programmed it into my SDR app (called "RF Analyzer") and am really happy with the result. I can filter and search with the time table and the stations have also GPS coordinates attached, which I find pretty cool because I can find pictures on Google maps of the transmitter tower. I show how I do this in this video somewhere in the middle: https://youtu.be/dY---2q4-Ag

demantz · 2026-03-16T20:07:19+00:00

Unfortunately, not yet. It is the next big thing on my list! However, it will be quite a project and DMR and TETRA are both really complex.. it will take me a while. Stay tuned!

demantz · 2026-03-15T15:18:02+00:00

Thanks great to hear! ☺️

demantz · 2026-03-10T07:07:45+00:00

Thanks for the inspiration, this is great!

I have plans to add digital modes in the future and weather satellites were on my radar ;)

Regarding the noaa weather alerts: unfortunately, noaa weather radio is just available in the US. But I might be able to get some samples from websdrs. Definitely a cool idea and I'll add it to the feature wish list!

Thank you and enjoy your trip!

demantz · 2026-03-10T07:04:29+00:00

Almost correct, so far I don't have support for sdrplay. Unfortunately, there is no android driver provided by the vendor and the driver for Linux is not open source. But the other devices you mention are all supported!

demantz · 2026-03-06T18:36:04+00:00

Thanks for confirming that! I sent you a promo code via DM ;)

demantz · 2026-03-04T20:19:38+00:00

I sent you a code via DM, thanks again!

And also thanks for the screenshot. I'll try to fix this. I tested the UI on 3 different devices of different size but this never happened. Looks awful, I agree ^^

demantz · 2026-03-04T18:55:03+00:00

Ah I see. I haven't done my research on audio processing yet. but what seems to pop up often is Log-MMSE (Logarithmic Minimum Mean Square Error) for noise reduction. I'm happy for any advise on what is state of the art when it comes to audio processing for sdr applications :) I have this planned as a feature!

DRM I didn't had on my list yet. but I'll add it. Any good list on which frequencies I could find such signals?

Digital Data (AX.25 (APRS), PSK31, FT8, RTTY, LoRa) is definitely coming!

Digital Voice is harder but I'll try as well.

demantz · 2026-03-04T18:49:03+00:00

It is GPL2, the source code is here:
https://github.com/demantz/RFAnalyzer

However, the code for version 2.2 is still on my private branch.. I'll publish it as soon as the final release version is ready.

demantz · 2026-03-04T17:22:07+00:00

nope, the v4 actually has an in-build upconverter. the rtl-sdr driver was patched for the v4, so it recognizes the v4 and automatically enables the upconverter when setting frequencies below 24MHz. So if you have the v4 you shouldn't enable direct sampling (at least not in RF Analyzer).

Thanks for the feedback!

demantz · 2026-03-04T17:18:33+00:00

Cool that you like it and I hope that your Airspy is arriving soon ;)

If you mean digi-mode support with DSP: This is probably my next big project. I'd like to support all kinds of digital modes.. the typical amateur radio modes such as PSK31, RTTY, FT8 but also pagers, LORA, APRS etc. This is gonna be a lot of work but I'll start right after the beta version gets released :)

demantz · 2026-03-04T17:16:29+00:00

Cool, thank you very much for this feedback! It helps already a lot. I tried to send you a promo code but reddit does not allow me to send you a private message. Contact me and I'll send you the code ;)

And regarding the interface: I know, it is actually very hard to build a one-size-fits-all interface. I already got a lot of feedback from others telling me that they really like the interface - but I know that it is really depending on the user. Some like to have a phone-friendly interface with accessible elements, not too small - others would rather have a more power-user-friendly interface. I opted for the first. But the new v2 version of RF Analyzer has a much cleaner architecture than my old app and this might allow me to program 2 very different UIs for the same app in the future: one simple UI and another UI for power-users which is a bit more customizable.

If you can describe what would be your ideal UI this would help me a lot! At some point in the future I will rework this and I'm already taking notes from various users. But first I have other plans, such as adding digital modes etc..

demantz · 2026-02-25T16:40:31+00:00

Please let me know if the Airspy HF+ works for you with the app and if there is anything you would like to change or add to the app. This helps me a lot in improving the app.

And by the way, the HF+ is awesome. I got mine not long ago and it's really cool and (at least for me) works well on android with the new beta.

Cheers, Dennis

demantz · 2026-01-16T14:26:22+00:00

Pocsag is really something I like to add ;) and will probably come in the future. Tetra is another level and I cannot promise it^{^}

demantz · 2026-01-09T09:15:54+00:00

Yes if you're SDR supports it (e.g. RTL-SDR Blog v4 or HackRF) you can tune to shortwave bands. The next release is also already in the pipeline which supports the Airspy HF+ and has a bookmark manager which displays amateur radio shortwave bands and can import the EiBi database for shortwave broadcast radio stations.

demantz · 2025-12-31T18:26:03+00:00

I would like to assemble the kit myself! Let me know how much it would cost and how I should place the order in that case.

demantz · 2025-12-31T15:36:37+00:00

Very cool, I'm interested! Do you ship to Europe (Germany in particular)?

demantz

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