iSDR

A Software Defined Radio App

Veröffentlicht von: Digital Confections

Beschreibung

PLEASE READ THE ENTIRE DESCRIPTION BEFORE PURCHASING. iSDR is the first and only software-defined radio application compatible with the Apple iPhone®, iPod touch® and iPad™. iSDR is for experimenters and amateur radio enthusiasts looking to construct a truly portable software-defined radio receiver. Additional hardware is required to receive live signals. Currently, iOS devices will not work with RTL-SDR USB dongles, and they are not supported by iSDR.
PLEASE NOTE: Receiving live on-air signals using iSDR requires purchasing or constructing a "quadrature sampling detector (QSD)" RF front-end device, and connecting it between an antenna and the microphone input jack. Alternatively, iSDR can be used to implement a panadapter for use with a compatible radio receiver. Without a QSD RF front-end or a connected radio, iSDR will only play I/Q recordings of actual radio signals. Additional recordings can be loaded into the app using iTunes file sharing - some recordings are available free to download from the Internet. Visit the support web site for more information.
iSDR includes a sample I/Q recording featuring 30 seconds of a ham radio contest. This is for demonstration purposes only. It is not meant to fool you! It is to allow you to experience how the app works without having to do anything yourself: just turn it on. You can download and play your own files if you like. Please see the support page for details. AND PLEASE contact us directly if you experience any issues with using this app. We will respond promptly when provided with details.
When iSDR is used to receive live radio signals, receiver performance will depend largely on the quadrature sampling detector and antenna that you use.
iSDR is a software-defined receiver application for use on mobile handset devices and iPad. Despite its extreme portability, the app utilizes the same digital signal processing techniques found in PC-based SDR receivers. It does frequency domain filtering using a theoretical "brick wall" sinc filter algorithm to provide steep and deep bandpass filtering. iSDR doesn't utilize any DSP hardware but instead uses the iOS device's processor to implement DSP algorithms.
Features
o Six receive mode settings: USB, LSB, CW, AM, FM* and Binaural.
o Selectable bandwidth settings for each mode.
o Signal strength meter covering 120 dB of dynamic range with peak and average power indication.
o Three AGC settings: fast, slow, and off.
o Three display modes: Spectrum, Waterfall and Oscilloscope.
o File sharing** supports downloaded audio-format spectrum files synced using iTunes.
o Most PCM file formats are supported, including .wav and .caf.
o Embed the center frequency in your file names and iSDR will automatically display the correct frequency!
o Tune quickly using a single touch to the display screen, or tune precisely using the rainbow tune bar.
o Change radio settings with a simple double-tap action to the red cursor, mode text, AGC indicator or signal grid!
o Up to 44.1 kHz of available spectrum bandwidth.
o Dimmable semi-log or linear spectrum grid (native Settings app only).
o Adjustable CW offset (native Settings app only).
o Monaural microphone input automatically adjusts the display to 22 kHz bandwidth.
o Automatically detects if external audio is available for receiving live signals (menu selectable).
o Reverse I/Q stereo input logic (menu selectable).
*FM mode is not supported for monaural signals, and will not appear as a mode selection unless stereo audio (live or recorded) is available. Narrowband FM only: 16 kHz or 11.2 kHz bandwidth.
Please contact Digital Confections with your questions and suggestions!
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In-App-Käufe

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iSDR Häufige Fragen

  • Ist iSDR kostenlos?

    Nein, iSDR ist nicht kostenlos (es kostet 49.99), und es enthält auch In-App-Käufe.

  • Ist iSDR seriös?

    🤔 Die Qualität der iSDR-App ist gemischt. Einige Nutzer sind zufrieden, während andere Probleme melden. Ziehen Sie in Betracht, einzelne Bewertungen für mehr Kontext zu lesen.

    Danke für die Stimme

  • Wie viel kostet iSDR?

    iSDR kostet 49.99 zum Herunterladen (und es gibt auch zusätzliche In-App-Käufe).

  • Wie hoch ist der Umsatz von iSDR?

    Um geschätzte Einnahmen der iSDR-App und weitere AppStore-Einblicke zu erhalten, können Sie sich bei der AppTail Mobile Analytics Platform anmelden.

Benutzerbewertung
Die App ist in Ägypten noch nicht bewertet.
Bewertungsverlauf

iSDR Bewertungen

Junk

Dr MonkeyBrains on

Vereinigte Staaten

This is junk. Will not work at all. Just get a blank black screen. Would like my money back

Very useful!

InTruthIBelieve on

Vereinigte Staaten

Exactly what I was looking for. I plan to use this app with KX2, QCX, and QSX in the future. Although I currently have none of these radios, the demo file gives me a very good understanding of what this app can do. Mind blown with the sdr/dsp stuff.

Outdated

port rhombus on

Vereinigte Staaten

I wish the developer would release an update with iPhone X display support. Goes to show how long it’s been since this app was updated. It’s nice to see my Xiegu G90’s waterfall on a larger screen (the radio only has a 1.8” display), but frustrating knowing it could be larger still.

Needs FT-8 mode

TheGadgetinator on

Vereinigte Staaten

Any chance you would consider making an FT-8 encoding / decoding iPhone app? I think this would be very popular. 73! Jim - KH2SR Needs support for Apple Watch

Absolute garbage.

Pheenix99 on

Vereinigte Staaten

Absolute garbage.

ISDR

Ka9p on

Vereinigte Staaten

For 99 cents it's hard to complain about this app. Struggled with a few poor connections but once the iMic was properly connected to the KX3 everything worked as advertised. Panadapter bandwidth is limited to a max of 44 kHz as near as I can tell, but the resolution on the iPad was great, and it was easy to locate strong signals and relatively open spots in the cw bands to facilitate working expeditions. No point and click to tune the radio obviously, but a great addition to the KX3 if you're carrying an iPad or iPhone already.

Panadapter for KX3

ji1963 on

Vereinigte Staaten

I bought this app to use as a Panadapter with my Elecraft KX3. For only 99 cents it's a real bargain. I connect the iPad to my radio through a Griffin iMic and the Apple camera connection kit. I use the tuning knob on the radio and watch the peaks on the spectrum display move left or right, depending on which direction I'm tuning. When a peak is at the center of the display, I hear that station coming out of my radio. The waterfall display is a lot harder to use this way, so I only use the spectrum display. I hope Digital Confections will add a dual spectrum/waterfall display like on Elecraft's panadapter. That's the only reason I didn't give the app 5 stars.

Really?

Sibman1 on

Vereinigte Staaten

This app does nothing with software defined radio. It just "gives you the experience of software defined radio using sampled data."

Works.

AnythingButNormal on

Vereinigte Staaten

Tried application with IQ samples dumped from others receivers and works great. however I am wondering and requesting support for the USB RTL-SDR dongles. Preferable via a direct usb connection through the camera connection kit. Or via RTL_TCP (samples over the Internet live)/ IQ sample dumps. It would be awesome, because then I could avoid buying a nexus for mobile SDR usage.

Not working

Mar128a on

Vereinigte Staaten

Crashes immediately after launch. Haven't seen anything yet about a fix. Maybe not interested in making it work with previous versions of the OS. Glad I didn't pay for this.

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