04-02-2013
Hi Corona688...
I like the function idea for the config file. Why didn't I think of it...
As for the others, let me get the status lines cleaned up and if need be Trigger/Sync points first... Then I will experiment.
Thanks a lot matey...
Still working out how to get DC in on ONE input only...
I have a simple method of relay switching AC to DC and back using the 1KHz generator but even with the chopper I have no means, AFAIK, whether the DC is +ve or -ve.
This is the idea I have gotten, use the chopper to get the relative DC level, and on exactly the same multivib use the VFO section to detect whether the signal is +ve or -ve, a low freq being -ve and a high freq being +ve... FM and AM in 1 swoop... ;oD
Remember I have only ONE input...
The code should be easy...
BTW, tested on this Macbook Pro OSX 10.7.5 in DEMO and SOX modes and my Gnome Debian 6.0.x in DEMO and DSP modes...
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LEARN ABOUT DEBIAN
fmscan
FM(1) General Commands Manual FM(1)
NAME
fmscan - scan FM band for radio stations
SYNOPSIS
fm [ -h ] [ -d device ] [ -t tuner ] [ -s freq ] [ -e freq ] [ -i freq ] [ -q ]
DESCRIPTION
fmscan is a program to scan a frequency band for radio stations, using the video4linux interface introduced in 2.1.x series Linux kernels.
It shows which ones have a accumulated signal strength of 50% or higher.
OPTIONS
-h Print a usage message to standard output, and exit.
-d device
Sets device as the device to tune. The default is /dev/radio0.
-t tuner
Sets tuner as the tuner on the selected device to adjust. The default is tuner 0. Most radio devices have only a single tuner.
-s freq
Starting frequency for scan, in MHz. Default: 87.9.
-e freq
Ending frequency for scan, in MHz. Default: 107.9.
-i freq
Increment between scanned channels, in MHz. Default: 0.2.
-t percent
Signal strength threshold to consider a channel. Default: 50%.
-q Quiet mode. Suppresses progress output.
BUGS
This process can take a while, and results vary greatly depending on the radio card in use. If your card's hardware cannot report signal
strength, it will not produce useful results.
This program may not do much if your radio card's driver doesn't support fine tuning in 1/16000 MHz offsets. By default, V4L2 assumes 1/16
MHz tuning units, which introduces evil rounding errors on many frequencies.
Supports only tuner 0 on any given device.
SEE ALSO
Additional documentation:
/usr/doc/fmtools/README
The fmtools homepage:
http://benpfaff.org/fmtools
AUTHORS
Russell Kroll <rkroll@exploits.org>, now maintained by Ben Pfaff <blp@cs.stanford.edu.>. This manpage written by Ben Pfaff.
fmscan 1.0.2 FM(1)