RTL-SDR v.3 + SPYSERVER = NO HF

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dandspach
Posts: 3
Joined: Mon Mar 22, 2021 10:26 pm

RTL-SDR v.3 + SPYSERVER = NO HF

Post by dandspach » Tue Mar 23, 2021 12:40 pm

I successfully installed RTL-SDR v.3 and SPYSERVER on Raspberry PI4. Using Windows client I can access the remote RTL-SDR and all works well on UHF/VHF. When I change the config file frequencies to allow for HF and change antennas, I can't see any HF signals.

I've ensured all filters are off and gain is turned up. I've also tried changing a few settings in the config file, but still not working. Below is a copy of my config file trying to use HF. Any help is sincerely appreciated.

# SPY Server Configuration File

# TCP Listener
#
bind_host = 0.0.0.0
bind_port = 5555-6666

# List Server in Airspy Directory
#
list_in_directory = 1

# Owner Name
# For example: John Doe L8ZEE
owner_name =

# Owner email
# For example: [email protected]
owner_email =

# Antenna
# For example: Random Wire/Magnetic Loop/Mini-Whip/Inverted V/etc.
antenna_type =

# Antenna Location
# For example: 48.858332, 2.294560
antenna_location =

# General Description
#
general_description =

# User sessions
#
maximum_clients = 1

# Maximum session duration
# In minutes. 0 for no limit
#
#maximum_session_duration = 30

# Allow clients to retune and change of gain of the device
#
allow_control = 1

# Device Type
# Possible Values:
# AirspyOne (R0, R2, Mini)
# AirspyHF+
# RTL-SDR
# Auto (Scans for the first available device)
#
device_type = RTL-SDR

# Device Serial Number as 64bit Hex
# For example: 0xDD52D95C904534AD
# A value of 0 will acquire the first available device.
#
device_serial = 0

# Device Sample Rate
# Possible Values:
# Airspy R0, R2 : 10000000 or 2500000
# Airspy Mini : 6000000 or 3000000
# Airspy HF+ : 768000
# RTL-SDR : 500000 to 3200000
# Comment to use the device's default
#
#device_sample_rate = 2500000

# Force 8bit Compression Mode
# The 8bit Compression mode has proven sufficiently good for most streaming use cases.
# Use it to same some internet bandwidth.
#
#force_8bit = 1

# Maximum Bandwidth
# Limits the maximum IQ bandwidth the clients can set
# Recommended value for WFM is 200000
# Recommended value for narrow band modes is 15000
#
#maximum_bandwidth = 15000

# FFT Frames Per Second
#
fft_fps = 15

# FFT Bins
# Bins = 2^fft_bin_bits
#
fft_bin_bits = 16

# Initial Center Frequency
#
#initial_frequency = 7100000

# Minimum Tunable Frequency
# Comment if using the device default
#
minimum_frequency = 0

# Maximum Tunable Frequency
# Comment if using the device default
#
maximum_frequency = 60000000

# Frequency Correction in PPB
#
#frequency_correction_ppb = 0

# Initial Gain
#
#initial_gain = 5

# RTL-SDR Sampling mode
# Quadrature = 0,
# Direct Sampling I Branch = 1
# Direct Sampling Q Branch = 2
#rtl_sampling_mode = 0

# Converter Offset
# Set to -120000000 to enable the SpyVerter offset
converter_offset = -120000000

# Bias-Tee
# For AirspyOne only - Useful for LNA's and SpyVerter
#enable_bias_tee = 0

# Buffer Size (in milliseconds)
#
buffer_size_ms = 50

# Buffer Count
#
buffer_count = 10

tim_rtd
Posts: 178
Joined: Fri Jun 30, 2017 11:34 am

Re: RTL-SDR v.3 + SPYSERVER = NO HF

Post by tim_rtd » Tue Mar 23, 2021 5:32 pm

I think you have to enable one of these in the config.
# RTL-SDR Sampling mode
# Quadrature = 0,
# Direct Sampling I Branch = 1
# Direct Sampling Q Branch = 2
#rtl_sampling_mode = 0

dandspach
Posts: 3
Joined: Mon Mar 22, 2021 10:26 pm

Re: RTL-SDR v.3 + SPYSERVER = NO HF

Post by dandspach » Wed Mar 24, 2021 12:36 pm

Ok, but which one? I am using RTL-SDR v.3.0

tim_rtd
Posts: 178
Joined: Fri Jun 30, 2017 11:34 am

Re: RTL-SDR v.3 + SPYSERVER = NO HF

Post by tim_rtd » Wed Mar 24, 2021 2:09 pm

I would say....
rtl_sampling_mode = 1

dandspach
Posts: 3
Joined: Mon Mar 22, 2021 10:26 pm

Re: RTL-SDR v.3 + SPYSERVER = NO HF

Post by dandspach » Fri Mar 26, 2021 10:45 pm

Thanks for all the help...

it was rtl_sampling_mode = 2

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