diff --git a/conf/default.conf b/conf/default.conf
new file mode 100644
index 0000000..3f4b617
--- /dev/null
+++ b/conf/default.conf
@@ -0,0 +1,145 @@
+; This is a GNSS-SDR configuration file
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
+
+; Default configuration file
+; You can define your own receiver and invoke it by doing
+; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
+;
+
+[GNSS-SDR]
+
+;######### GLOBAL OPTIONS ##################
+;internal_fs_sps: Internal signal sampling frequency after the signal conditioning stage [samples per second].
+GNSS-SDR.internal_fs_sps=4000000
+
+
+;######### SUPL RRLP GPS assistance configuration #####
+; Check https://www.mcc-mnc.com/
+; On Android: https://play.google.com/store/apps/details?id=net.its_here.cellidinfo&hl=en
+GNSS-SDR.SUPL_gps_enabled=false
+GNSS-SDR.SUPL_read_gps_assistance_xml=true
+GNSS-SDR.SUPL_gps_ephemeris_server=supl.google.com
+GNSS-SDR.SUPL_gps_ephemeris_port=7275
+GNSS-SDR.SUPL_gps_acquisition_server=supl.google.com
+GNSS-SDR.SUPL_gps_acquisition_port=7275
+GNSS-SDR.SUPL_MCC=244
+GNSS-SDR.SUPL_MNC=5
+GNSS-SDR.SUPL_LAC=0x59e2
+GNSS-SDR.SUPL_CI=0x31b0
+
+;######### SIGNAL_SOURCE CONFIG ############
+SignalSource.implementation=File_Signal_Source
+SignalSource.filename=/datalogger/signals/CTTC/2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN/2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN.dat ; <- PUT YOUR FILE HERE
+SignalSource.item_type=ishort
+SignalSource.sampling_frequency=4000000
+SignalSource.samples=0
+SignalSource.repeat=false
+SignalSource.enable_throttle_control=false
+
+
+;######### SIGNAL_CONDITIONER CONFIG ############
+SignalConditioner.implementation=Signal_Conditioner
+
+;######### DATA_TYPE_ADAPTER CONFIG ############
+DataTypeAdapter.implementation=Ishort_To_Complex
+
+;######### INPUT_FILTER CONFIG ############
+InputFilter.implementation=Pass_Through ; or Fir_Filter
+
+InputFilter.input_item_type=gr_complex
+InputFilter.output_item_type=gr_complex
+InputFilter.taps_item_type=float
+InputFilter.number_of_taps=5
+InputFilter.number_of_bands=2
+InputFilter.band1_begin=0.0
+InputFilter.band1_end=0.44
+InputFilter.band2_begin=0.55
+InputFilter.band2_end=1.0
+InputFilter.ampl1_begin=1.0
+InputFilter.ampl1_end=1.0
+InputFilter.ampl2_begin=0.0
+InputFilter.ampl2_end=0.0
+InputFilter.band1_error=1.0
+InputFilter.band2_error=1.0
+InputFilter.filter_type=bandpass
+InputFilter.grid_density=16
+InputFilter.sampling_frequency=4000000
+InputFilter.IF=0
+InputFilter.dump=false
+InputFilter.dump_filename=../data/input_filter.dat
+
+
+;######### RESAMPLER CONFIG ############
+Resampler.implementation=Pass_Through
+Resampler.dump=false
+Resampler.dump_filename=../data/resampler.dat
+
+
+;######### CHANNELS GLOBAL CONFIG ############
+Channels_1C.count=6
+Channels_1B.count=0
+Channels.in_acquisition=1
+
+
+;######### SPECIFIC CHANNELS CONFIG ######
+
+;######### CHANNEL 0 CONFIG ############
+;Channel0.signal=1C
+;Channel0.satellite=11
+
+;######### CHANNEL 1 CONFIG ############
+;Channel1.signal=1C
+;Channel1.satellite=18
+
+;######### ACQUISITION GLOBAL CONFIG ############
+Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition_Fine_Doppler
+Acquisition_1C.item_type=gr_complex
+Acquisition_1C.coherent_integration_time_ms=1
+Acquisition_1C.threshold=2.5
+;Acquisition_1C.pfa=0.0001
+Acquisition_1C.doppler_max=10000
+Acquisition_1C.doppler_step=500
+Acquisition_1C.max_dwells=5
+Acquisition_1C.dump=false
+Acquisition_1C.dump_filename=./acq_dump.dat
+
+
+;######### TRACKING GLOBAL CONFIG ############
+Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
+Tracking_1C.item_type=gr_complex
+Tracking_1C.pll_bw_hz=45.0;
+Tracking_1C.dll_bw_hz=3.0;
+Tracking_1C.order=3;
+Tracking_1C.dump=false
+Tracking_1C.dump_filename=../data/epl_tracking_ch_
+
+
+;######### TELEMETRY DECODER GPS CONFIG ############
+TelemetryDecoder_1C.implementation=GPS_L1_CA_Telemetry_Decoder
+TelemetryDecoder_1C.dump=false
+
+
+;######### OBSERVABLES CONFIG ############
+Observables.implementation=Hybrid_Observables
+Observables.dump=false
+Observables.dump_filename=./observables.dat
+
+
+;######### PVT CONFIG ############
+PVT.implementation=RTKLIB_PVT
+PVT.positioning_mode=PPP_Static  ; options: Single, Static, Kinematic, PPP_Static, PPP_Kinematic
+PVT.iono_model=Broadcast ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
+PVT.trop_model=Saastamoinen ; options: OFF, Saastamoinen, SBAS, Estimate_ZTD, Estimate_ZTD_Grad
+PVT.AR_GPS=PPP-AR ; options: OFF, Continuous, Instantaneous, Fix-and-Hold, PPP-AR
+PVT.output_rate_ms=10
+PVT.display_rate_ms=500
+PVT.nmea_dump_filename=./gnss_sdr_pvt.nmea
+PVT.flag_nmea_tty_port=true
+PVT.nmea_dump_devname=/dev/pts/4
+PVT.flag_rtcm_server=true
+PVT.flag_rtcm_tty_port=false
+PVT.rtcm_dump_devname=/dev/pts/1
+PVT.dump=false
+PVT.dump_filename=./PVT
diff --git a/conf/front-end-cal.conf b/conf/front-end-cal.conf
new file mode 100644
index 0000000..17c770e
--- /dev/null
+++ b/conf/front-end-cal.conf
@@ -0,0 +1,183 @@
+; This is a GNSS-SDR configuration file
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
+
+; Default configuration file
+; You can define your own front-end calibration tool configuration and invoke it by doing
+; ./front-end-cal --config_file=my_GNSS_SDR_configuration.conf
+;
+
+[GNSS-SDR]
+
+;######### INITIAL RECEIVER POSITIION ######
+; Redstone Canyon
+GNSS-SDR.init_latitude_deg=40.568912
+GNSS-SDR.init_longitude_deg=-105.225852
+GNSS-SDR.init_altitude_m=1843
+
+;######### GLOBAL OPTIONS ##################
+;internal_fs_sps: Internal signal sampling frequency after the signal conditioning stage [samples per second].
+GNSS-SDR.internal_fs_sps=2000000
+
+; XXX              XXX
+; XXX USING GOOGLE XXX
+; XXX              XXX
+;######### SUPL RRLP GPS assistance configuration #####
+; Check https://www.mcc-mnc.com/
+; On Android: https://play.google.com/store/apps/details?id=net.its_here.cellidinfo&hl=en
+GNSS-SDR.SUPL_gps_enabled=true
+GNSS-SDR.SUPL_read_gps_assistance_xml=false
+GNSS-SDR.SUPL_gps_ephemeris_server=supl.google.com
+GNSS-SDR.SUPL_gps_ephemeris_port=7275
+GNSS-SDR.SUPL_gps_acquisition_server=supl.google.com
+GNSS-SDR.SUPL_gps_acquisition_port=7275
+GNSS-SDR.SUPL_MCC=217
+GNSS-SDR.SUPL_MNC=7
+GNSS-SDR.SUPL_LAC=861
+GNSS-SDR.SUPL_CI=40184
+
+;######### SIGNAL_SOURCE CONFIG ############
+SignalSource.implementation=Osmosdr_Signal_Source
+;#item_type: Type and resolution for each of the signal samples. Use only gr_complex in this version.
+SignalSource.item_type=gr_complex
+;#sampling_frequency: Original Signal sampling frequency in samples per second
+SignalSource.sampling_frequency=2000000
+;#freq: RF front-end center frequency in [Hz]
+SignalSource.freq=1575420000
+;#gain: Front-end Gain in [dB]
+SignalSource.gain=40
+SignalSource.rf_gain=40
+SignalSource.if_gain=30
+SignalSource.enable_throttle_control=false
+SignalSource.AGC_enabled=true
+SignalSource.osmosdr_args=hackrf,bias=1
+
+;#samples: Number of samples to be processed. Notice that 0 means infinite samples.
+SignalSource.samples=0
+
+;#repeat: Repeat the processing file.
+SignalSource.repeat=false
+
+;#dump: Dump the Signal source data to a file.
+SignalSource.dump=false
+
+SignalSource.dump_filename=/home/jebba/devel/SDR/GNSS/data/signal_source.dat
+
+;######### SIGNAL_CONDITIONER CONFIG ############
+;## It holds blocks to change data type, filter and resample input data.
+
+;#implementation: Use [Pass_Through] or [Signal_Conditioner]
+;#[Pass_Through] disables this block and the [DataTypeAdapter], [InputFilter] and [Resampler] blocks
+;#[Signal_Conditioner] enables this block. Then you have to configure [DataTypeAdapter], [InputFilter] and [Resampler] blocks
+SignalConditioner.implementation=Pass_Through
+
+;######### DATA_TYPE_ADAPTER CONFIG ############
+;## Changes the type of input data.
+;#implementation: Use [Ishort_To_Complex] or [Pass_Through]
+DataTypeAdapter.implementation=Pass_Through
+;#dump: Dump the filtered data to a file.
+DataTypeAdapter.dump=false
+;#dump_filename: Log path and filename.
+DataTypeAdapter.dump_filename=/home/jebba/devel/SDR/GNSS/data/data_type_adapter.dat
+
+;######### INPUT_FILTER CONFIG ############
+;## Filter the input data. Can be combined with frequency translation for IF signals
+
+;#implementation: Use [Pass_Through] or [Fir_Filter] or [Freq_Xlating_Fir_Filter]
+;#[Pass_Through] disables this block
+;#[Fir_Filter] enables a FIR Filter
+;#[Freq_Xlating_Fir_Filter] enables FIR filter and a composite frequency translation that shifts IF down to zero Hz.
+
+InputFilter.implementation=Freq_Xlating_Fir_Filter
+
+;#The following options are used in the filter design of Fir_Filter and Freq_Xlating_Fir_Filter implementation.
+;#These options are based on parameters of gnuradio's function: gr_remez.
+;#This function calculates the optimal (in the Chebyshev/minimax sense) FIR filter impulse response given a set of band edges,
+;#the desired response on those bands, and the weight given to the error in those bands.
+
+;#input_item_type: Type and resolution for input signal samples.
+InputFilter.input_item_type=gr_complex
+
+;#outut_item_type: Type and resolution for output filtered signal samples.
+InputFilter.output_item_type=gr_complex
+
+;#taps_item_type: Type and resolution for the taps of the filter. Use only float in this version.
+InputFilter.taps_item_type=float
+
+;#number_of_taps: Number of taps in the filter. Increasing this parameter increases the processing time
+InputFilter.number_of_taps=5
+
+;#number_of _bands: Number of frequency bands in the filter.
+InputFilter.number_of_bands=2
+
+;#bands: frequency at the band edges [ b1 e1 b2 e2 b3 e3 ...].
+;#Frequency is in the range [0, 1], with 1 being the Nyquist frequency (Fs/2)
+;#The number of band_begin and band_end elements must match the number of bands
+
+InputFilter.band1_begin=0.0
+;InputFilter.band1_end=0.8
+InputFilter.band1_end=0.85
+InputFilter.band2_begin=0.90
+InputFilter.band2_end=1.0
+
+;#ampl: desired amplitude at the band edges [ a(b1) a(e1) a(b2) a(e2) ...].
+;#The number of ampl_begin and ampl_end elements must match the number of bands
+
+InputFilter.ampl1_begin=1.0
+InputFilter.ampl1_end=1.0
+InputFilter.ampl2_begin=0.0
+InputFilter.ampl2_end=0.0
+
+;#band_error: weighting applied to each band (usually 1).
+;#The number of band_error elements must match the number of bands
+InputFilter.band1_error=1.0
+InputFilter.band2_error=1.0
+
+;#filter_type: one of "bandpass", "hilbert" or "differentiator"
+InputFilter.filter_type=bandpass
+
+;#grid_density: determines how accurately the filter will be constructed.
+;The minimum value is 16; higher values are slower to compute the filter.
+InputFilter.grid_density=16
+
+;#The following options are used only in Freq_Xlating_Fir_Filter implementation.
+;#InputFilter.IF is the intermediate frequency (in Hz) shifted down to zero Hz
+
+InputFilter.sampling_frequency=2000000
+InputFilter.IF=0
+
+InputFilter.decimation_factor=1
+
+;#dump: Dump the filtered data to a file.
+InputFilter.dump=false
+
+;#dump_filename: Log path and filename.
+InputFilter.dump_filename=/home/jebba/devel/SDR/GNSS/data/input_filter.dat
+
+;######### RESAMPLER CONFIG ############
+;## Resamples the input data.
+;#implementation: Use [Pass_Through] or [Direct_Resampler]
+;#[Pass_Through] disables this block
+Resampler.implementation=Pass_Through
+
+;######### ACQUISITION GLOBAL CONFIG ############
+Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition_Fine_Doppler
+;#item_type: Type and resolution for each of the signal samples. Use only gr_complex in this version.
+Acquisition.item_type=gr_complex
+;#sampled_ms: Signal block duration for the acquisition signal detection [ms]
+Acquisition.sampled_ms=1
+;#threshold: Acquisition threshold
+Acquisition.threshold=0.015
+;#doppler_max: Maximum expected Doppler shift [Hz]
+Acquisition.doppler_max=100000
+;#doppler_max: Maximum expected Doppler shift [Hz]
+Acquisition.doppler_min=-100000
+;#doppler_step Doppler step in the grid search [Hz]
+Acquisition.doppler_step=500
+;#maximum dwells
+Acquisition.max_dwells=15
+;#dump: Enable or disable the acquisition internal data file logging [true] or [false]
+Acquisition.dump=false
+;#filename: Log path and filename
+Acquisition.dump_filename=/home/jebba/devel/SDR/GNSS/data/acq_dump.dat
diff --git a/conf/gnss-sdr.conf b/conf/gnss-sdr.conf
new file mode 100644
index 0000000..beab54c
--- /dev/null
+++ b/conf/gnss-sdr.conf
@@ -0,0 +1,160 @@
+; This is a GNSS-SDR configuration file
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
+
+; Default configuration file
+; You can define your own receiver and invoke it by doing
+; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
+;
+
+[GNSS-SDR]
+
+;######### GLOBAL OPTIONS ##################
+;internal_fs_sps: Internal signal sampling frequency after the signal conditioning stage [samples per second].
+GNSS-SDR.internal_fs_sps=4000000
+
+
+;######### SUPL RRLP GPS assistance configuration #####
+; Check https://www.mcc-mnc.com/
+; On Android: https://play.google.com/store/apps/details?id=net.its_here.cellidinfo&hl=en
+GNSS-SDR.SUPL_gps_enabled=false
+GNSS-SDR.SUPL_read_gps_assistance_xml=true
+GNSS-SDR.SUPL_gps_ephemeris_server=supl.google.com
+GNSS-SDR.SUPL_gps_ephemeris_port=7275
+GNSS-SDR.SUPL_gps_acquisition_server=supl.google.com
+GNSS-SDR.SUPL_gps_acquisition_port=7275
+GNSS-SDR.SUPL_MCC=244
+GNSS-SDR.SUPL_MNC=5
+GNSS-SDR.SUPL_LAC=0x59e2
+GNSS-SDR.SUPL_CI=0x31b0
+
+;######### SIGNAL_SOURCE CONFIG ############
+SignalSource.implementation=Osmosdr_Signal_Source
+;#item_type: Type and resolution for each of the signal samples. Use only gr_complex in this version.
+SignalSource.item_type=gr_complex
+;#sampling_frequency: Original Signal sampling frequency in samples per second
+SignalSource.sampling_frequency=2000000
+;#freq: RF front-end center frequency in [Hz]
+SignalSource.freq=1575420000
+;#gain: Front-end Gain in [dB]
+SignalSource.gain=40
+SignalSource.rf_gain=40
+SignalSource.if_gain=30
+SignalSource.enable_throttle_control=false
+SignalSource.AGC_enabled=true
+SignalSource.osmosdr_args=hackrf,bias=1
+
+;;######### SIGNAL_SOURCE CONFIG ############
+;SignalSource.implementation=File_Signal_Source
+;SignalSource.filename=/datalogger/signals/CTTC/2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN/2013_04_04_GNSS_SIGNAL_at_CTTC_SPAIN.dat ; <- PUT YOUR FILE HERE
+;SignalSource.item_type=ishort
+;SignalSource.sampling_frequency=4000000
+;SignalSource.samples=0
+;SignalSource.repeat=false
+;SignalSource.enable_throttle_control=false
+
+;######### SIGNAL_CONDITIONER CONFIG ############
+SignalConditioner.implementation=Signal_Conditioner
+
+;######### DATA_TYPE_ADAPTER CONFIG ############
+DataTypeAdapter.implementation=Ishort_To_Complex
+
+;######### INPUT_FILTER CONFIG ############
+InputFilter.implementation=Pass_Through ; or Fir_Filter
+
+InputFilter.input_item_type=gr_complex
+InputFilter.output_item_type=gr_complex
+InputFilter.taps_item_type=float
+InputFilter.number_of_taps=5
+InputFilter.number_of_bands=2
+InputFilter.band1_begin=0.0
+InputFilter.band1_end=0.44
+InputFilter.band2_begin=0.55
+InputFilter.band2_end=1.0
+InputFilter.ampl1_begin=1.0
+InputFilter.ampl1_end=1.0
+InputFilter.ampl2_begin=0.0
+InputFilter.ampl2_end=0.0
+InputFilter.band1_error=1.0
+InputFilter.band2_error=1.0
+InputFilter.filter_type=bandpass
+InputFilter.grid_density=16
+InputFilter.sampling_frequency=4000000
+InputFilter.IF=0
+InputFilter.dump=false
+InputFilter.dump_filename=/home/jebba/devel/SDR/GNSS/data/input_filter.dat
+
+
+;######### RESAMPLER CONFIG ############
+;Resampler.implementation=Pass_Through
+;Resampler.dump=false
+;Resampler.dump_filename=/home/jebba/devel/SDR/GNSS/data/resampler.dat
+
+
+;######### CHANNELS GLOBAL CONFIG ############
+Channels_1C.count=6
+Channels_1B.count=0
+Channels.in_acquisition=1
+
+
+;######### SPECIFIC CHANNELS CONFIG ######
+
+;######### CHANNEL 0 CONFIG ############
+;Channel0.signal=1C
+;Channel0.satellite=11
+
+;######### CHANNEL 1 CONFIG ############
+;Channel1.signal=1C
+;Channel1.satellite=18
+
+;######### ACQUISITION GLOBAL CONFIG ############
+Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition_Fine_Doppler
+Acquisition_1C.item_type=gr_complex
+Acquisition_1C.coherent_integration_time_ms=1
+Acquisition_1C.threshold=2.5
+;Acquisition_1C.pfa=0.0001
+Acquisition_1C.doppler_max=10000
+Acquisition_1C.doppler_step=500
+Acquisition_1C.max_dwells=5
+Acquisition_1C.dump=false
+Acquisition_1C.dump_filename=/home/jebba/devel/SDR/GNSS/data/acq_dump.dat
+
+
+;######### TRACKING GLOBAL CONFIG ############
+Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
+Tracking_1C.item_type=gr_complex
+Tracking_1C.pll_bw_hz=45.0;
+Tracking_1C.dll_bw_hz=3.0;
+Tracking_1C.order=3;
+Tracking_1C.dump=false
+Tracking_1C.dump_filename=/home/jebba/devel/SDR/GNSS/data/epl_tracking_ch_
+
+
+;######### TELEMETRY DECODER GPS CONFIG ############
+TelemetryDecoder_1C.implementation=GPS_L1_CA_Telemetry_Decoder
+TelemetryDecoder_1C.dump=false
+
+
+;######### OBSERVABLES CONFIG ############
+Observables.implementation=Hybrid_Observables
+Observables.dump=false
+Observables.dump_filename=/home/jebba/devel/SDR/GNSS/data/observables.dat
+
+
+;######### PVT CONFIG ############
+PVT.implementation=RTKLIB_PVT
+PVT.positioning_mode=PPP_Static  ; options: Single, Static, Kinematic, PPP_Static, PPP_Kinematic
+PVT.iono_model=Broadcast ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
+PVT.trop_model=Saastamoinen ; options: OFF, Saastamoinen, SBAS, Estimate_ZTD, Estimate_ZTD_Grad
+PVT.AR_GPS=PPP-AR ; options: OFF, Continuous, Instantaneous, Fix-and-Hold, PPP-AR
+PVT.output_rate_ms=10
+PVT.display_rate_ms=500
+PVT.nmea_dump_filename=/home/jebba/devel/SDR/GNSS/data/gnss_sdr_pvt.nmea
+PVT.flag_nmea_tty_port=true
+PVT.nmea_dump_devname=/dev/pts/4
+PVT.flag_rtcm_server=true
+PVT.flag_rtcm_tty_port=false
+PVT.rtcm_dump_devname=/dev/pts/1
+PVT.dump=false
+PVT.dump_filename=/home/jebba/devel/SDR/GNSS/data/PVT
diff --git a/conf/gnss-sdr_GPS_L1_LimeSDR.conf b/conf/gnss-sdr_GPS_L1_LimeSDR.conf
new file mode 100644
index 0000000..f99fefc
--- /dev/null
+++ b/conf/gnss-sdr_GPS_L1_LimeSDR.conf
@@ -0,0 +1,111 @@
+; This is a GNSS-SDR configuration file
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
+
+[GNSS-SDR]
+
+;######### GLOBAL OPTIONS ##################
+GNSS-SDR.internal_fs_sps=2000000
+
+;######### SIGNAL_SOURCE CONFIG ############
+SignalSource.implementation=Osmosdr_Signal_Source
+SignalSource.item_type=gr_complex
+SignalSource.sampling_frequency=2000000
+;# LimeSDR RX1 antennas: NONE,LNAH,LNAL,LNAW
+SignalSource.antenna=LNAW
+SignalSource.freq=1575420000
+SignalSource.gain=40
+SignalSource.rf_gain=40
+SignalSource.if_gain=30
+SignalSource.AGC_enabled=false
+SignalSource.samples=0
+SignalSource.repeat=false
+;# Next line enables the LimeSDR
+SignalSource.osmosdr_args=driver=lime,soapy=0
+SignalSource.enable_throttle_control=false
+SignalSource.dump=false
+SignalSource.dump_filename=./signal_source.dat
+
+;######### SIGNAL_CONDITIONER CONFIG ############
+SignalConditioner.implementation=Signal_Conditioner
+
+;######### DATA_TYPE_ADAPTER CONFIG ############
+DataTypeAdapter.implementation=Pass_Through
+
+;######### INPUT_FILTER CONFIG ############
+InputFilter.implementation=Freq_Xlating_Fir_Filter
+InputFilter.decimation_factor=1
+InputFilter.input_item_type=gr_complex
+InputFilter.output_item_type=gr_complex
+InputFilter.taps_item_type=float
+InputFilter.number_of_taps=5
+InputFilter.number_of_bands=2
+InputFilter.band1_begin=0.0
+InputFilter.band1_end=0.85
+InputFilter.band2_begin=0.9
+InputFilter.band2_end=1.0
+InputFilter.ampl1_begin=1.0
+InputFilter.ampl1_end=1.0
+InputFilter.ampl2_begin=0.0
+InputFilter.ampl2_end=0.0
+InputFilter.band1_error=1.0
+InputFilter.band2_error=1.0
+InputFilter.filter_type=bandpass
+InputFilter.grid_density=16
+InputFilter.dump=false
+InputFilter.dump_filename=../data/input_filter.dat
+
+;######### RESAMPLER CONFIG ############
+Resampler.implementation=Pass_Through
+
+;######### CHANNELS GLOBAL CONFIG ############
+Channels_1C.count=8
+Channels.in_acquisition=1
+Channel.signal=1C
+
+;######### ACQUISITION GLOBAL CONFIG ############
+Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition_Fine_Doppler
+Acquisition_1C.item_type=gr_complex
+Acquisition_1C.sampled_ms=1
+Acquisition_1C.threshold=0.015
+Acquisition_1C.doppler_max=10000
+Acquisition_1C.doppler_min=-10000
+Acquisition_1C.doppler_step=500
+Acquisition_1C.max_dwells=15
+Acquisition_1C.dump=false
+Acquisition_1C.dump_filename=./acq_dump.dat
+
+;######### TRACKING GLOBAL CONFIG ############
+Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
+Tracking_1C.item_type=gr_complex
+Tracking_1C.pll_bw_hz=40.0;
+Tracking_1C.dll_bw_hz=2.0;
+Tracking_1C.order=3;
+Tracking_1C.early_late_space_chips=0.5;
+Tracking_1C.dump=false
+Tracking_1C.dump_filename=./tracking_ch_
+
+;######### TELEMETRY DECODER GPS CONFIG ############
+TelemetryDecoder_1C.implementation=GPS_L1_CA_Telemetry_Decoder
+TelemetryDecoder_1C.dump=false
+
+;######### OBSERVABLES CONFIG ############
+Observables.implementation=GPS_L1_CA_Observables
+Observables.dump=false
+Observables.dump_filename=./observables.dat
+
+;######### PVT CONFIG ############
+;PVT.implementation=RTKLIB_PVT
+PVT.positioning_mode=Single
+PVT.output_rate_ms=100
+PVT.display_rate_ms=500
+PVT.iono_model=Broadcast
+PVT.trop_model=Saastamoinen
+PVT.flag_rtcm_server=true
+PVT.flag_rtcm_tty_port=false
+PVT.rtcm_dump_devname=/dev/pts/1
+PVT.rtcm_tcp_port=2101
+PVT.rtcm_MT1019_rate_ms=5000
+PVT.rtcm_MT1077_rate_ms=1000
+PVT.rinex_version=2
diff --git a/conf/hackrf-foo.conf b/conf/hackrf-foo.conf
new file mode 100644
index 0000000..bea68a9
--- /dev/null
+++ b/conf/hackrf-foo.conf
@@ -0,0 +1,113 @@
+; This is a GNSS-SDR configuration file
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
+
+[GNSS-SDR]
+
+;######### GLOBAL OPTIONS ##################
+GNSS-SDR.internal_fs_sps=2000000
+
+;######### SIGNAL_SOURCE CONFIG ############
+SignalSource.implementation=Osmosdr_Signal_Source
+SignalSource.item_type=gr_complex
+SignalSource.sampling_frequency=2000000
+;# LimeSDR RX1 antennas: NONE,LNAH,LNAL,LNAW
+SignalSource.antenna=LNAW
+SignalSource.freq=1575420000
+SignalSource.gain=40
+SignalSource.rf_gain=40
+SignalSource.if_gain=30
+SignalSource.AGC_enabled=false
+SignalSource.samples=0
+SignalSource.repeat=false
+;# Next line enables the LimeSDR
+;SignalSource.osmosdr_args=driver=lime,soapy=0
+# Perchance hackrf
+SignalSource.osmosdr_args=hackrf,bias=1
+SignalSource.enable_throttle_control=false
+SignalSource.dump=false
+SignalSource.dump_filename=/home/jebba/devel/SDR/GNSS/data/signal_source.dat
+
+;######### SIGNAL_CONDITIONER CONFIG ############
+SignalConditioner.implementation=Signal_Conditioner
+
+;######### DATA_TYPE_ADAPTER CONFIG ############
+DataTypeAdapter.implementation=Pass_Through
+
+;######### INPUT_FILTER CONFIG ############
+InputFilter.implementation=Freq_Xlating_Fir_Filter
+InputFilter.decimation_factor=1
+InputFilter.input_item_type=gr_complex
+InputFilter.output_item_type=gr_complex
+InputFilter.taps_item_type=float
+InputFilter.number_of_taps=5
+InputFilter.number_of_bands=2
+InputFilter.band1_begin=0.0
+InputFilter.band1_end=0.85
+InputFilter.band2_begin=0.9
+InputFilter.band2_end=1.0
+InputFilter.ampl1_begin=1.0
+InputFilter.ampl1_end=1.0
+InputFilter.ampl2_begin=0.0
+InputFilter.ampl2_end=0.0
+InputFilter.band1_error=1.0
+InputFilter.band2_error=1.0
+InputFilter.filter_type=bandpass
+InputFilter.grid_density=16
+InputFilter.dump=false
+InputFilter.dump_filename=/home/jebba/devel/SDR/GNSS/data/input_filter.dat
+
+;######### RESAMPLER CONFIG ############
+Resampler.implementation=Pass_Through
+
+;######### CHANNELS GLOBAL CONFIG ############
+Channels_1C.count=8
+Channels.in_acquisition=1
+Channel.signal=1C
+
+;######### ACQUISITION GLOBAL CONFIG ############
+Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition_Fine_Doppler
+Acquisition_1C.item_type=gr_complex
+Acquisition_1C.sampled_ms=1
+Acquisition_1C.threshold=0.015
+Acquisition_1C.doppler_max=10000
+Acquisition_1C.doppler_min=-10000
+Acquisition_1C.doppler_step=500
+Acquisition_1C.max_dwells=15
+Acquisition_1C.dump=false
+Acquisition_1C.dump_filename=/home/jebba/devel/SDR/GNSS/data/acq_dump.dat
+
+;######### TRACKING GLOBAL CONFIG ############
+Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
+Tracking_1C.item_type=gr_complex
+Tracking_1C.pll_bw_hz=40.0;
+Tracking_1C.dll_bw_hz=2.0;
+Tracking_1C.order=3;
+Tracking_1C.early_late_space_chips=0.5;
+Tracking_1C.dump=false
+Tracking_1C.dump_filename=/home/jebba/devel/SDR/GNSS/data/tracking_ch_
+
+;######### TELEMETRY DECODER GPS CONFIG ############
+TelemetryDecoder_1C.implementation=GPS_L1_CA_Telemetry_Decoder
+TelemetryDecoder_1C.dump=false
+
+;######### OBSERVABLES CONFIG ############
+Observables.implementation=GPS_L1_CA_Observables
+Observables.dump=false
+Observables.dump_filename=/home/jebba/devel/SDR/GNSS/data/observables.dat
+
+;######### PVT CONFIG ############
+;PVT.implementation=RTKLIB_PVT
+PVT.positioning_mode=Single
+PVT.output_rate_ms=100
+PVT.display_rate_ms=500
+PVT.iono_model=Broadcast
+PVT.trop_model=Saastamoinen
+PVT.flag_rtcm_server=true
+PVT.flag_rtcm_tty_port=false
+PVT.rtcm_dump_devname=/dev/pts/1
+PVT.rtcm_tcp_port=2101
+PVT.rtcm_MT1019_rate_ms=5000
+PVT.rtcm_MT1077_rate_ms=1000
+PVT.rinex_version=2
diff --git a/conf/hackrf-morefoo.conf b/conf/hackrf-morefoo.conf
new file mode 100644
index 0000000..ce57d7c
--- /dev/null
+++ b/conf/hackrf-morefoo.conf
@@ -0,0 +1,205 @@
+; From:
+; https://gnss-sdr.org/conf/
+; A stable clock: the oscillator shipped with the HackRF is not good enough for GNSS signal processing. You will need a frequency stability of 1 ppm or better.
+; You will need to provide an external clock source to the HackRF with a frequency stability of 1 ppm or better (so a 10 MHz oscillator will vary by 10 Hz).
+
+;
+; Need to add for gnss-sdr-monitor:
+; GNSS_Synchro port: 1111
+; Monitor_Pvt port:  1112
+; Telecommand port:  ???? 2101 ? 3333 ?
+;
+; Sample from gnss-sdr-monitor docs:
+;PVT.enable_monitor=true
+;PVT.monitor_client_addresses=127.0.0.1
+;PVT.monitor_udp_port=1111
+;Monitor.enable_monitor=true
+;Monitor.decimation_factor=1
+;Monitor.client_addresses=127.0.0.1
+;Monitor.udp_port=1112
+;GNSS-SDR.telecommand_enabled=true
+;GNSS-SDR.telecommand_tcp_port=3333
+;
+; Sample ports referenced in other configs:
+;AcquisitionMonitor.udp_port=1231
+;GNSS-SDR.SUPL_1C_acquisition_port=7275
+;GNSS-SDR.SUPL_1C_ephemeris_port=7275
+;GNSS-SDR.SUPL_gps_acquisition_port=7275
+;GNSS-SDR.SUPL_gps_ephemeris_port=7275
+;Monitor.udp_port=1233
+;PVT.monitor_udp_port=1234
+;PVT.rtcm_tcp_port=2101
+;SignalSource.port=1230
+;TrackingMonitor.udp_port=1232
+
+
+[GNSS-SDR]
+;######### INITIAL RECEIVER POSITIION ######
+; Redstone Canyon
+GNSS-SDR.init_latitude_deg=40.5691
+GNSS-SDR.init_longitude_deg=-105.226
+GNSS-SDR.init_altitude_m=1848.06
+
+
+;######### GLOBAL OPTIONS ##################
+GNSS-SDR.internal_fs_sps=2000000
+; gnss-sdr-monitor
+GNSS-SDR.telecommand_enabled=true
+GNSS-SDR.telecommand_tcp_port=3333
+
+;######### SIGNAL_SOURCE CONFIG ############
+SignalSource.implementation=Osmosdr_Signal_Source
+SignalSource.item_type=gr_complex
+SignalSource.sampling_frequency=2000000
+SignalSource.freq=1575420000
+SignalSource.gain=40
+SignalSource.rf_gain=40
+SignalSource.if_gain=30
+SignalSource.AGC_enabled=false
+SignalSource.samples=0
+SignalSource.repeat=false
+;# Next line enables the internal HackRF One bias (3.3 VDC)
+SignalSource.osmosdr_args=hackrf,bias=1
+SignalSource.enable_throttle_control=false
+SignalSource.dump=false
+SignalSource.dump_filename=./signal_source.dat
+
+;######### SIGNAL_CONDITIONER CONFIG ############
+SignalConditioner.implementation=Signal_Conditioner
+
+;######### DATA_TYPE_ADAPTER CONFIG ############
+DataTypeAdapter.implementation=Pass_Through
+
+;######### INPUT_FILTER CONFIG ############
+InputFilter.implementation=Freq_Xlating_Fir_Filter
+InputFilter.decimation_factor=1
+InputFilter.input_item_type=gr_complex
+InputFilter.output_item_type=gr_complex
+InputFilter.taps_item_type=float
+InputFilter.number_of_taps=5
+InputFilter.number_of_bands=2
+InputFilter.band1_begin=0.0
+InputFilter.band1_end=0.85
+InputFilter.band2_begin=0.9
+InputFilter.band2_end=1.0
+InputFilter.ampl1_begin=1.0
+InputFilter.ampl1_end=1.0
+InputFilter.ampl2_begin=0.0
+InputFilter.ampl2_end=0.0
+InputFilter.band1_error=1.0
+InputFilter.band2_error=1.0
+InputFilter.filter_type=bandpass
+InputFilter.grid_density=16
+InputFilter.dump=false
+InputFilter.dump_filename=../data/input_filter.dat
+
+;######### RESAMPLER CONFIG ############
+Resampler.implementation=Pass_Through
+
+;######### CHANNELS GLOBAL CONFIG ############
+Channels_1C.count=8
+Channels.in_acquisition=1
+
+;######### ACQUISITION GLOBAL CONFIG ############
+Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition
+;Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition_Fine_Doppler
+Acquisition_1C.item_type=gr_complex
+Acquisition_1C.coherent_integration_time_ms=1
+Acquisition_1C.pfa=0.01
+Acquisition_1C.doppler_max=5000
+Acquisition_1C.doppler_step=250
+Acquisition_1C.max_dwells=1
+Acquisition_1C.dump=false
+Acquisition_1C.dump_filename=./acq_dump.dat
+
+;######### TRACKING GLOBAL CONFIG ############
+Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
+Tracking_1C.item_type=gr_complex
+Tracking_1C.extend_correlation_symbols=10
+Tracking_1C.early_late_space_chips=0.5
+Tracking_1C.early_late_space_narrow_chips=0.15
+Tracking_1C.pll_bw_hz=40
+Tracking_1C.dll_bw_hz=2.0
+Tracking_1C.pll_bw_narrow_hz=5.0
+Tracking_1C.dll_bw_narrow_hz=1.50
+Tracking_1C.fll_bw_hz=10
+Tracking_1C.enable_fll_pull_in=true
+Tracking_1C.enable_fll_steady_state=false
+Tracking_1C.dump=false
+Tracking_1C.dump_filename=tracking_ch_
+
+;######### TELEMETRY DECODER GPS CONFIG ############
+TelemetryDecoder_1C.implementation=GPS_L1_CA_Telemetry_Decoder
+TelemetryDecoder_1C.dump=false
+
+;######### OBSERVABLES CONFIG ############
+Observables.implementation=Hybrid_Observables
+Observables.dump=false
+Observables.dump_filename=./observables.dat
+
+;######### PVT CONFIG ############
+PVT.implementation=RTKLIB_PVT
+PVT.positioning_mode=Single
+;PVT.positioning_mode=Static
+;PVT.positioning_mode=PPP_Kinematic
+PVT.output_rate_ms=100
+PVT.display_rate_ms=500
+PVT.iono_model=Broadcast
+;PVT.iono_model=Iono‐Free-LC
+PVT.trop_model=Saastamoinen
+PVT.flag_rtcm_server=true
+PVT.flag_rtcm_tty_port=true
+;PVT.rtcm_dump_devname=/dev/pts/1
+PVT.rtcm_tcp_port=2101
+PVT.rtcm_MT1019_rate_ms=5000
+PVT.rtcm_MT1077_rate_ms=1000
+;PVT.rtcm_station_id=1111
+PVT.rinex_version=2
+; gnss-sdr-monitor
+PVT.enable_monitor=true
+PVT.monitor_client_addresses=192.168.110.69
+;PVT.monitor_client_addresses=127.0.0.1_192.168.110.69
+;PVT.monitor_client_addresses=127.0.0.1
+PVT.monitor_udp_port=1111
+PVT.nmea_output_enabled=true
+PVT.nmea_output_file_enabled=true
+;PVT.nmea_dump_filename=./gnss_sdr_pvt.nmea
+;PVT.nmea_dump_filename=./fifo/gnss_sdr_pvt.nmea
+PVT.nmea_dump_filename=./fifo/gnss_sdr_pvt-tmp.nmea
+PVT.flag_nmea_tty_port=true
+PVT.nmea_dump_devname=/dev/pts/7
+;PVT.dynamics_model=1
+;PVT.enable_rx_clock_correction=false
+;PVT.max_clock_offset_ms=40
+;PVT.code_phase_error_ratio_l1=100
+;PVT.raim_fde=0
+;PVT.reject_GPS_IIA=1
+;PVT.phwindup=1
+;PVT.earth_tide=1
+;PVT.output_enabled=true
+;PVT.rtcm_output_file_enabled=false
+;PVT.gpx_output_enabled=false
+;PVT.geojson_output_enabled=false
+;PVT.kml_output_enabled=false
+;PVT.xml_output_enabled=false
+;PVT.rinex_output_enabled=false
+;PVT.rtcm_MT1045_rate_ms=5000
+;PVT.rtcm_MSM_rate_ms=1000
+;PVT.rtcm_MT1097_rate_ms=1000
+PVT.output_path=/srv/gnss/
+;PVT.dump=false
+;PVT.dump_filename=./pvt.dat
+;PVT.enable_monitor_ephemeris=true
+;PVT.monitor_ephemeris_client_addresses=127.0.0.1
+;PVT.monitor_ephemeris_udp_port=1234
+;PVT.enable_protobuf=false
+
+
+;######### MONITOR CONFIG ############
+Monitor.enable_monitor=true
+Monitor.decimation_factor=1
+Monitor.client_addresses=192.168.110.69
+;Monitor.client_addresses=127.0.0.1_192.168.110.69
+;Monitor.client_addresses=127.0.0.1
+Monitor.udp_port=1112
+