adaptive burst mode

[helioshk]

Hi,
If I understand it correctly, adaptive-burst should reduce the gain in the presence of strong signals, so that nearby aircraft can be decoded.

In my setup it does that "a little", but apparently not enough. The RSSI of nearby helicopters is in the order -1.0 to -2.0 dBFS and there are large gaps in their flight path.

Maybe I have the wrong settings?

# Initial receiver gain, in dB. If adaptive gain is enabled (see below) the actual gain
# may change over time
RECEIVER_GAIN=33.8

# Adjust gain to try to achieve optimal dynamic range / noise floor?
ADAPTIVE_DYNAMIC_RANGE=no
# Target dynamic range in dB (leave blank to autoselect based on SDR type)
ADAPTIVE_DYNAMIC_RANGE_TARGET=
# Reduce gain when loud message bursts from nearby aircraft are seen?
ADAPTIVE_BURST=yes
# Gain range to allow when changing gain, in dB (empty = no limit)
ADAPTIVE_MIN_GAIN=
ADAPTIVE_MAX_GAIN=

I think the RSSI shouldn't exeed -3 dBFS.
I also tried to enable ADAPTRIVE_DYNAMIC_RANGE (I don't know if it also supposed to be enabled together with adaptive burst) but it doesn't seem to improve.

[helioshk]

I opened a discussion on the FA forum.