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QiwiQ a KiwiSDR client for Android: looking for feedback, testers and comments

jks

September 8

You are correct that on a mobile client there is no real use for an IQ mode button. However the SAM, SAU, SAL, SAS and QAM modes should be considered. Perhaps just SAM since the others are less frequently used. There is a real advantage to using synchronous AM decoding for weak AM signals.

Just my opinion, but I think using red to outline active buttons has too little contrast. Maybe something like yellow would be better?

QiwiQ a KiwiSDR client for Android: looking for feedback, testers and comments

dl7awl

September 8

Another question: has anyone ever found an FM signal on the shortwave bands?

Yes, at least on 10 or 11 m it's quite usual.

QiwiQ a KiwiSDR client for Android: looking for feedback, testers and comments

jks

September 5

@XPloRR Do you write iOS apps as well? We've had many requests for a comprehensive Kiwi iOS app over the years. But no success in getting anyone to do it who would be remunerated by selling licenses on the app store (i.e. we have no money to fund development ourselves).

Related: I mentioned previously that I bought a license. But currently there is no feedback when you enter the license key. So unclear if it's been accepted or not. Perhaps the linkage with the licensing backend isn't setup yet.

QiwiQ a KiwiSDR client for Android: looking for feedback, testers and comments

XPloRR

September 5

Just now saw all these comments (i was talking in another thread with jks, will use this one now ;-))

I am currently fixing a lot of problems, like the 2 connections will be 1 for all (wf, snd and ext).

Fixing other problems like enter in the search screen.

Also spend alot of work making the audio packets engine faster (should now be 35% faster).

There is a bit more latency, but fewer packets should be dropped.

Also reacting/closing sockets cleanly when connection cannot be made with server.

Compiling now version 1.39. will test and release soon.

Also working on DRM (can already decode using ext socket, but cannot assemble the audio, sounds like half the frequency, it seems the audio format is different in DRM mode).

Will try to answer other questions asap, note that I am a newbie as far as shortwave is concerned, so I probably made mistakes interpreting what I read the last weeks (only been reading for 4 weeks about the ham/shortwave/amateur radio stuff)

...

QiwiQ a KiwiSDR client for Android: looking for feedback, testers and comments

dl7awl

September 3

Is there a way to enter a kiwi URL directly rather than selecting from the list? I'd like to try to access my own kiwi which is currently not public.

BTW: Nice and professionally looking work (app & website)!

Linear power supply

G8JNJ

September 3

It depends...

If the Apple charger is actually contributing noise in the first place, but it may not be.

There are so many potential noise sources, in, and around the home, that it may not be possible to observe any difference if you swap out the Apple supply, as its contribution may be masked by other stronger sources.

With noise, it's a bit like peeling an onion, as soon as you remove one layer of skin, there is another thinner layer underneath.

Personally, I'd attempt to identify other noise sources first, and try and deal with them, and work your way through the increasingly diminishing returns.

I use a TinySA Ultra with a telescopic antenna to "sniff" for noise sources around my property. But with care the KiWi can also be used for this purpose, by connecting a "sniffing" antenna via a long length of coax. Just be aware that when moving the antenna around, there is a short delay before received signals produce an output or appear on the waterfall.

Regards,

Martin

QiwiQ a KiwiSDR client for Android: looking for feedback, testers and comments

XPloRR

September 2

Hi all,

I’ve been programming a mobile client for the KiwiSDR protocol, and I finally have something worth sharing: QiwiQ.

It’s a dark-theme, portrait-mode KiwiSDR app for Android.

Instead of running in the browser, my app processes the KiwiSDR stream locally on your phone.

With no official KiwiSDR protocol documentation available, I relied on example Python code and reverse-engineered browser clients to piece together how the protocol operates.

Features:

• Connects to the public shared KiwiSDR network of servers.

• Built-in waterfall FFT display with zoom and pan.

• Direct band buttons for fast hopping between ham/shortwave bands.

• Frequency logging and memory list.

• Audio options: noise reduction, compressor, ADPCM compression.

• Gestures for tuning: swipe digits, waterfall

• Knobs for volume, squelch and filters.

• Theme colors for the LCD display

It’s still early days, but it’s working pretty well, I guess ;-).

Download my QiwiQ.apk at: https://vanbarel.eu.org/tools/qiwiq/

Side-load on Android, feedback/bugs very welcome!