Unstable frequency

[launchd]

I'm having difficulty getting the frequency stay stable. Here's what it looks like

Found Rafael Micro R828D tuner Disabled direct sampling mode [R82XX] PLL not locked! 2022-08-20T14:03:00Z [monitor] gain: 14.01, freq: -14.0, omega: 2.589, vit(avg): 2119, rs(sum): 0, packets: 1, drops: 30 2022-08-20T14:03:01Z [monitor] gain: 34.07, freq: -201.9, omega: 2.589, vit(avg): 2192, rs(sum): 0, packets: 0, drops: 32 2022-08-20T14:03:02Z [monitor] gain: 48.96, freq: -341.8, omega: 2.589, vit(avg): 2183, rs(sum): 0, packets: 0, drops: 34 2022-08-20T14:03:03Z [monitor] gain: 59.34, freq: -1165.2, omega: 2.589, vit(avg): 2186, rs(sum): 0, packets: 0, drops: 38 2022-08-20T14:03:04Z [monitor] gain: 66.75, freq: -1954.4, omega: 2.590, vit(avg): 2196, rs(sum): 0, packets: 0, drops: 33 2022-08-20T14:03:05Z [monitor] gain: 71.27, freq: 85.5, omega: 2.589, vit(avg): 2202, rs(sum): 0, packets: 0, drops: 36 2022-08-20T14:03:06Z [monitor] gain: 73.94, freq: 554.9, omega: 2.588, vit(avg): 2202, rs(sum): 0, packets: 0, drops: 32 2022-08-20T14:03:07Z [monitor] gain: 76.37, freq: -1836.2, omega: 2.588, vit(avg): 2215, rs(sum): 0, packets: 0, drops: 34 2022-08-20T14:03:08Z [monitor] gain: 78.70, freq: -3464.7, omega: 2.588, vit(avg): 2211, rs(sum): 0, packets: 0, drops: 34 2022-08-20T14:03:09Z [monitor] gain: 80.86, freq: -3399.1, omega: 2.588, vit(avg): 2227, rs(sum): 0, packets: 0, drops: 33 2022-08-20T14:03:10Z [monitor] gain: 81.93, freq: -4202.1, omega: 2.590, vit(avg): 2216, rs(sum): 0, packets: 0, drops: 34 2022-08-20T14:03:11Z [monitor] gain: 81.98, freq: -4357.3, omega: 2.590, vit(avg): 2219, rs(sum): 0, packets: 0, drops: 34 2022-08-20T14:03:12Z [monitor] gain: 81.98, freq: -4442.8, omega: 2.590, vit(avg): 2226, rs(sum): 0, packets: 0, drops: 34 2022-08-20T14:03:13Z [monitor] gain: 81.98, freq: -4928.9, omega: 2.590, vit(avg): 2223, rs(sum): 0, packets: 0, drops: 33 2022-08-20T14:03:14Z [monitor] gain: 81.98, freq: -6293.6, omega: 2.590, vit(avg): 2213, rs(sum): 0, packe

I'm basically using the default config as well:

[demodulator]
mode = "hrit"
source = "rtlsdr"



[rtlsdr]
frequency = 1694100000
sample_rate = 2400000
gain = 30
bias_tee = false
device_index = 0

# [nanomsg]
# sample_rate = 2400000
# connect = "tcp://1.2.3.4:5005"
# receive_buffer = 2097152

[costas]
max_deviation = 200e3

[clock_recovery.sample_publisher]
bind = "tcp://0.0.0.0:5002"
send_buffer = 2097152

[quantization.soft_bit_publisher]
bind = "tcp://0.0.0.0:5001"
send_buffer = 1048576

[decoder.packet_publisher]
bind = "tcp://0.0.0.0:5004"
send_buffer = 1048576

# The demodulator stats publisher sends a JSON object that describes
# the state of the demodulator (gain, frequency correction, samples
# per symbol), for every block of samples.
[demodulator.stats_publisher]
bind = "tcp://0.0.0.0:6001"

# The decoder stats publisher sends a JSON object for every packet it
# decodes (Viterbi corrections, Reed-Solomon corrections, etc.).
[decoder.stats_publisher]
bind = "tcp://0.0.0.0:6002"

# The monitor can log aggregated stats (counters, gauges, and
# histograms) to a statsd daemon. Because this uses UDP, you can keep
# this enabled even if you haven't setup a statsd daemon yet.
[monitor]
statsd_address = "udp4://localhost:8125"

[N9ZL]

I found changing the [rtlsdr] gain= line from 30 to 3 solved the freq instability for my Nooelec NESDR SmarteeXTR.