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| #!/bin/sh | |
| echo "Content-Type: audio/wav" | |
| echo | |
| freq=$QUERY_STRING | |
| if [ x$freq = x ]; then | |
| freq="82.5M" | |
| fi | |
| rtl_fm -s 32000 -f $freq -W - | sox -r 32000 -c 1 -t s16 - -t wav - |
edy555
/ nbfm2wav.cgi
Created
December 15, 2012 16:24
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| #!/bin/sh | |
| echo "Content-Type: audio/wav" | |
| echo | |
| freq=$QUERY_STRING | |
| if [ x$freq = x ]; then | |
| freq="145M" | |
| fi | |
| /usr/local/bin/rtl_fm -s 16000 -f $freq -N -p 90 - | /usr/bin/sox -r 16000 -c 1 -t s16 - -t wav - |
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| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> | |
| <html> <head> | |
| <title>Remote 2M NBFM RX</title> | |
| <SCRIPT LANGUAGE=javascript> | |
| var baseuri = "/cgi-bin/nbfm2wav.cgi?"; | |
| var audio = null; | |
| function tune(freq) { | |
| if (audio != null) { | |
| audio.src = baseuri + freq; | |
| audio.load(); |
edy555
/ am2wav.cgi
Created
December 15, 2012 23:46
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| #!/bin/sh | |
| echo "Content-Type: audio/wav" | |
| echo | |
| freq=$QUERY_STRING | |
| /usr/local/bin/rtl_fm -s 16000 -f $freq -M -p 90 - | /usr/bin/sox -r 16000 -c 1 -t s16 - -t wav - |
edy555
/ dds-sample.py
Last active
December 11, 2015 18:09
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| from pylibftdi import BitBangDevice | |
| from dds import AD9859, BitBangInterface | |
| crystal = 25e6 | |
| mul = 16 | |
| fclk = mul * crystal | |
| pins = { "sdio":4, "sclk":0, "ioupdate":2, "iosync":6, "reset":7 } | |
| conf = { "pins":pins, "fclk":400e6, "refclk_multiplier":16, "vco_range":1 } | |
| freq = 10e6 |
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| #!/usr/bin/env python | |
| ################################################## | |
| # Gnuradio Python Flow Graph | |
| # Title: Vna Probe | |
| # Generated: Sat Jan 12 03:07:08 2013 | |
| ################################################## | |
| from pylibftdi import BitBangDevice | |
| from vna import vna |
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| from pylab import * | |
| f,arg,mag,ref = loadtxt('vnaplot.dat', delimiter=' ', unpack=True) | |
| subplot(2,1,1) | |
| plot(f, mag, label='mag') | |
| plot(f, ref, label='ref') | |
| xlabel('Frequency (Hz)') | |
| ylabel('Amplitude (dB)') | |
| grid(True) |
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| from pylab import * | |
| f,arg,mag,ref = loadtxt('vnaplot.dat', delimiter=' ', unpack=True) | |
| polar(arg, mag) | |
| polar(arg, ref) | |
| grid(True) | |
| show() |
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| import matplotlib as mpl | |
| from mpl_toolkits.mplot3d import Axes3D | |
| import numpy as np | |
| import matplotlib.pyplot as plt | |
| f,arg,mag,ref = np.loadtxt('vnaplot.dat', delimiter=' ', unpack=True) | |
| mpl.rcParams['legend.fontsize'] = 10 | |
| fig = plt.figure() |
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| #!/usr/bin/env python | |
| ################################################## | |
| # Gnuradio Python Flow Graph | |
| # Title: Vna Probe | |
| # Generated: Sat Jan 12 03:07:08 2013 | |
| ################################################## | |
| from pylibftdi import BitBangDevice | |
| from vna import vna |