FlightAware Discussions

After update PiAware from 5.0 to 6.0 gain of fa1090 was less

Hello.
Yesterday I was update my Piaware form 5.0 to 6.0 and i was select option [N] (default) from installation process. Now, my receiver have a less gain. On old piaware (5.0) i was a distanse about 180-190 nm, on piaware 6.0 only about 100 nm.
I don’t change any details form config file: dump1090-fa

# Generated automatically by /usr/lib/piaware-support/generate-receiver-config
# This file will be overwritten on reboot.
ENABLED=yes
CONFIG_STYLE=6
RECEIVER=rtlsdr
RECEIVER_SERIAL=0
RECEIVER_GAIN=60
ADAPTIVE_DYNAMIC_RANGE=no
ADAPTIVE_DYNAMIC_RANGE_TARGET=
ADAPTIVE_BURST=no
ADAPTIVE_MIN_GAIN=
ADAPTIVE_MAX_GAIN=
SLOW_CPU=auto
WISDOM=
ERROR_CORRECTION=yes
RECEIVER_LAT=
RECEIVER_LON=
MAX_RANGE=360
NET_RAW_INPUT_PORTS=
NET_RAW_OUTPUT_PORTS=30002
NET_SBS_OUTPUT_PORTS=30003
NET_BEAST_INPUT_PORTS=30004,30104
NET_BEAST_OUTPUT_PORTS=30005
JSON_LOCATION_ACCURACY=2
EXTRA_OPTIONS=
OVERRIDE_OPTIONS=

The receiver gain value is 60, and i think that from Piware 5.0 this max vaule was smaller, but i don’t know how many.

This is a PiAware sdcard image, so gain is configured in /boot/piaware-config.txt. What’s the contents of your piaware-config.txt ?

part of piaware config file:

#
# 1090MHZ RECEIVER CONFIGURATION
#

# For a complete list of receiver types and their associated settings,
# see the Advanced Configuration page linked at the top of this file.

# For a receiver type of 'rtlsdr', this setting controls the dongle gain.
# Use "max" for maximum gain. Other values are interpreted as a gain in dB.
rtlsdr-gain max
#rtlsdr-gain 38

# Additional settings can be added below.
adaptive-dynamic-range no   # updated by fa_piaware_config

this is a max value, but my receiver working on smaller distance.

Gain of 60 is correct for that config file. (Previously, this gain setting would be called “-10” in the dump1090 config, but it’s the same hardware setting)

If you want some other gain setting, you’ll need to change the piaware-config.txt file to reflect that.

On Piaware 5 i was have a default gain about 40 ?
What is a default (max) gain for piaware 5 ?

max gain setting for v5 is 49.6

thanks @ tomvdhorst