NOTE does NOT work on HTCSony Ericson Experiaetc. phones with Adreno GPU CHECK YOUR DEVICE for Adreno GPU BEFORE you download this App.There is a version with waterfall disabled that might work with Adreno GPU based devices.See:http:code.google.compsdrwidgetdownloadsdetail?nameglSDRnowaterfall.apkamp;can2amp;qclient app for connecting to Amateur Radio Ham Radio online servers.This version uses opengl ES 2.0 for the waterfall graphics display and may not work in some devices.Click on the menu on the bottom right corner to select the online servers.For information of glSDR and the servers, use the About menu.The first client that connects to a server is in master mode, and has control over the vfo and other controls so that it can tune and change bands and frequency etc.Subsequent client connections will be put in slave mode where the slave clients can only listen to the audio and watch the spectrum and waterfall in passive mode.When the master disconnects, the next slave in line will become the new master.When there are many simultaneous clients, the network bandwidth may be exceeded and some slaves will not have audio.You can see the masterslave status of your connection in the Title bar.There is automatic Rx IQ Correction that you can enabledisable via the DSP tab. Note that you should enable Rx IQ Correction only for servers connected to IQ based SDR hardware eg Softrock, UHFSDR, but NOT for direct sampling hardware eg Perseus.It has better display for high bandwidth servers.These servers have sampling rates of 480 ksps or more thus the spectrumwaterfall displays a wide bandwidth.Minimum of Ver 8 is needed for new versions of servers with a revamped local Oscillator Offset mechanism.It will take several days for all existing public servers to be migrated to the new mechanism.So in the meantime your spectrum display may be off by 9khz or so.Ver 9 has spectrumwaterfall zoom feature.Use pinch motion to zoomunzoom.I have found it easier to put one finger in a fixed position, and then zoomunzoom by moving the other finger.Ver 10 has improved drag tuning taking into account the zoom factor.Ver 11 has been tweaked for backward compatibility with Android 2.2 devices.Ver 12 has Spectrum Averaging options and also one FMN filter at 80khz for listening to Wide Band FM Broadcasts.Ver 13 has more Spectrum Averaging levels.glSDR has TRANSMIT capability in voice modes, ie SSB, AM, NBFM etc.However, you need to supply the User and Password to enable transmit when connecting to a password protected server ie ALL the public online servers.Also, it requires that your device is capable of MIC input at 8khz sampling rate.DO NOT install this version if your device is not compatible There is a version with waterfall disabled that might work with Adreno GPU based devices.See:http:code.google.compsdrwidgetdownloadsdetail?nameglSDRnowaterfall.apkamp;can2amp;q