Date: Fri, 24 Feb 2012 16:47:29 -0500
To: rsgb_lf_group@blacksheep.org
From: Bill de Carle <ve2iq@magma.ca>
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Subject: Re: LF: Is there an "APP" for QRSS ?
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I use a Samsung Galaxy S device to monitor my LF grabber while I'm 
not in the shack and it works FB.  Also have the DroidPSK app running 
thru a homebrew interface.  The 4-pin headphone/mike jack has the 
same configuration as the one on my Compaq netbook: tip is left audio 
out, ring1 right audio out, ring2 is ground and sleeve is mike 
input.  The phone senses when external mike is being used (2.2 K ohms 
from sleeve to ring2 works), and disables the internal mike(s).  No 
doubt the device would be suitable for QRSS display in the field, but 
Spectrum Lab might be a bit much, hi!  Only problem I see is that 
there doesn't seem to be any way to adjust the audio level to the 
integrated sound chip like with the sliders on a Windows machine and 
the mike input is quite sensitive so an external pot is needed to 
attenuate the audio input so the phone doesn't compress / distort it 
before any amplitude measurements are made.  I'm probably too old to 
start writing apps but it doesn't look too difficult.
Bill VE2IQ

At 03:51 PM 2/24/2012, Warren, K2ORS wrote:
>Hello the list,
>
>      I quite accidentally discovered that there are now "apps" for ham
>radio data modes for the Android phones including send/receive for
>morse, psk31, and RTTY:
>http://www.wolphi.com/
>
>     The psk31 app has a waterfall display, it seems that it should be
>possible to have an Android that would display QRSS signals and make
>for a very small and portable setup.
>
>     Some of these apps use the cell phone microphone to pick up audio
>from the radio's speaker, but there are hard-wired interfaces
>(probably much more suitable for QRSS) as well:
>
>http://www.wolphi.com/android-apps/droidpsk/droidpsk-to-ft817-interface
>
>
>
>Thoughts?