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; Example configuration file for vtsid ;
; ;
; Copy and edit to suit your requirements ;
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; General Settings ;
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; Specify directory to contain output files
; When running more than one copy of vtsid, each copy should have its own
; output directory.
datadir /raw/sid
; Specify the resolution. This can either be a number of bins, or a frequency
; in Hertz. Give one or the other. The number of bins doesn't have to be a
; power of two, but that is the most efficient. Otherwise, a number of bins
; which is the product of small factors is the next most efficient. But even
; a prime number of bins is handled reasonably well. If a resolution is given,
; this will be rounded to correspond to the nearest integer number of bins.
; resolution 1.0 ; Specify a resolution in Hz
bins 8192 ; Specify a number of frequency bins
; Specify how often monitor output records will be generated.
; Data will be averaged until the output interval is reached, then reported
; and cleared down.
; If this is set to zero, records will be generated as often as possible, which
; means every 1/resolution seconds, or every 2*bins/sample_rate seconds.
monitor_interval 5 ; Monitor output interval, seconds
; Indicate whether to monitor absolute phase. This requires the input stream
; to have a suitably accurate timestamp. Remove or comment-out if phase
; measurement is not required.
phase
; Spectrum records.
; Comment out the spectrum_interval statement to disable the spectrum records
spectrum_interval 120 ; Record the spectrum every 120 seconds.
; Specify the frequeny limits of the spectrum records. If the lower frequency
; is not given, the default is zero. If the upper frequency is not given,
; the default is the Nyquist frequency. The given frequencies will be rounded
; to a multiple of the resolution specified above.
;spectrum_lower 0 ; Lower frequency, Hz
;spectrum_upper 24000 ; Upper frequency, Hz
; Signal loss, warning threshold and timeout. If the RMS signal level on
; any channel falls below the threshold for longer than the timeout period
; an alert message will be raised.
; los 0.05 10 # RMS threshold and timeout in seconds
; Email address for alert messages
; mail someone@someplace
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; Channel Configuration ;
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; Configure the input channels, indicating which channels are E-field or
; H-field and specify the effective azimuth of each H-field.
; Channels are specified in the order they appear in the input stream
; Format is
; channel type options
; Type is either efield or hfield.
; Options are a comma-separated list
;
; az= Specify effective azimuth of hfield source, mandatory for hfield.
; cal= Specify an amplitude calibration factor. The channel signal is
; multiplied by this factor before use. This can be used to balance
; a pair of loops, or to calibrate E/H ratio for elevation. The
; calibration factor defaults to 1.0
; H-field antennas need not be orthogonal, nor aligned with North/South or
; East/West.
;
; Examples:
; ; Single channel of E-field
; channel efield
; ; Pair of orthogonal loops, ch1 is N/S aligned, ch2 is E/W
; channel hfield az=0
; channel hfield az=90
; ; Non-orthogonal loops, not aligned with cardinal points.
; ; ch 1 aligned 35/215 deg, ch 2 aligned 145/325 degrees
; channel hfield az=35
; channel hfield az=145
; ; Orthogonal loops but not cardinal aligned, with E-field on ch3
; channel hfield az=45
; channel hfield az=135
; channel efield
channel efield cal=1.0
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; Monitor Settings ;
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;
; The remainder of the config file is concerned with listing the signals to
; be monitored. Each monitor is identified by a case-sensitive 'ident' name.
;
; The format of each line is
;
; monitor ident type,options
;
; Type must be one of: noise, signal, msk, or cw
;
; The type determines how the channel is monitored and what parameters are
; to be measured and logged. Each type is described below.
;
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; Noise bands:
; These are intended for measuring broadband noise and the average level of
; sferics. These monitors log only amplitude and bearing, and the amplitude
; is normalised to RMS per root Hz.
;
; Must specify center frequency and bandwidth using f= and w= options.
monitor Sferics7 noise,f=7000,w=4000 ; Sferic band, 5khz to 9kHz
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; Signals:
; Ordinary signals which have no reliable phase for whatever reason. As with
; noise bands, only amplitude and bearing are logged, but the amplitude is the
; total RMS amplitude within the bandwidth.
;
; Must specify center frequency and bandwidth using f= and w= options.
; It is useful to monitor the hum levels
monitor hum50 signal,f=50,w=2 ; Monitor mains hum level
monitor hum150 signal,f=150,w=6 ; Mains 3rd harmonic
; Various MSK stations that are unreliable or too weak to give a carrier phase
monitor VTX signal,f=16300,w=200 ; 16.3 India
monitor RDL signal,f=18200,w=120 ; 18.1 Russia RDL/RLO/RKS
monitor FTA signal,f=20900,w=200 ; 20.9 France
monitor NPM signal,f=21400,w=100 ; 21.4 Hawaii
monitor HWU signal,f=22600,w=100 ; 22.6 France
monitor NAU cw,f=40800,w=200 ; Aguada, Puerto Rico
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; MSK signals:
; These monitors decode the carrier phase mod 180 and log this along with
; amplitude and bearing. Amplitude logged is the total RMS amplitude within
; the bandwidth.
;
; The carrier frequency f= and bit rate br= must be accurately specified.
;
; By default, the MSK phase is measured on channel 1. Use option ch=2, etc to
; specify a different channel. Alternatively, when using a pair of loop
; antennas, you can give az= to specify a bearing in degrees and the MSK
; phase will be measured along that bearing.
;
; Accuracy can be improved by logging the phase modulo 90 degrees instead of
; 180 - use an option mod=90 to set this mode of operation. This may become
; the default in a later revision of vtsid so if you want to stay with modulo
; 180 operation, an option mod=180 is recommended.
;
; When using short monitor intervals, eg less than a second, it is necessary
; for the monitor to use a different method of phase measurement. Set this
; mode with the option 'fast'. This is only available with mod=90 so you
; will have to specify mod=90,fast. With the fast option the monitor interval
; can be as low as 5mS.
; The bandwidth of the msk monitor can be set with a w= option. By default the
; bandwidth is set to 5 times the bitrate which is enough to capture the main
; lobe and first side lobes of the spectrum. If the signal is strong enough,
; accuracy can be improved by setting w= to 7 or 9 times the bitrate to bring
; in the 2nd and 3rd side lobes. If an adjacent station is very close and
; the signal weak, using w= 3 times the bitrate will accept just the main lobe.
monitor JXN msk,f=16400,br=50 ; Norway
monitor GBZ msk,f=19580,br=100 ; England
monitor NWC msk,f=19800,br=100 ; Harold Holt, Australia
monitor GQD msk,f=22100,br=50 ; England
monitor DHO msk,f=23400.000060,br=100 ; Germany
monitor NAA msk,f=24000,br=100 ; Cutler, USA
monitor TBB msk,f=26699.9990184,br=50 ; Bafa, Turkey 37:24:45.81N 27:19:24.03E
monitor NRK msk,f=37500,br=100 ; Iceland
monitor NSY msk,f=45900,br=100 ; Italy
monitor GYN2 msk,f=81009.975,br=50 ; Inskip, UK
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; CW signals:
; These monitors are intended for narrow-band signals from which the absolute
; phase is to be measured. The source must be locked to a frequency standard.
; Typically, time signals and navigation beacons are of this type.
; Must specify frequency f= and bandwidth w=
monitor MSF cw,f=60000,w=5 ; 60.0 England
monitor DCF cw,f=77500,w=5 ; 77.5 Germany