rtl-sdr.com

Try the Keenerd version of the RTL-SDR drivers, this has the -D option.

Check that different dongles are selected on each instance of Unitrunker.

Check out the issue tracker on the git, https://github.com/pavels/spektrum/issues/11.

Unfortunately doesn't seem like it's been fixed. Someone did say that they had success with moving the folder to the desktop though.

Take a look at the signal in a GUI program like SDR#. Is the signal clean, or are there any interferers nearby? You're using a sample rate of 22050 Hz. Have a look at the rtl_fm guide http://kmkeen.com/rtl-demod-guide/, and try using a smaller bandwidth. Maybe the problem is that you are receiving n...

Try opening unitrunker one at a time. e.g. Open one unitrunker, start the dongle. Open the second unitrunker, start the second dongle.

Possibly when you open them together both unitrunkers are using the same dongle.

Direct sampling mode should give you much better sensitivity compared to those no-mod modes. Check the help flag on the program you're using. There should be an option to enable direct sampling. On keenerds driver for rtl_power its [-D direct_sampling_mode, 0 (default/off), 1 (I), 2 (Q), 3 (no-mod)]...

Those are most likely over the horizon radar pulses e.g. https://www.sigidwiki.com/wiki/Jindalee ... ork_(JORN)

Depending on the size, i'd look for a junction box with waterproof cable clamps e.g. a small one: https://www.aliexpress.com/item/2018-New-Waterproof-IP65-Junction-Box-Protection-Building-DTY-Connectors-Drop-Shipping-Support/32866773410.html?spm=2114.search0104.3.71.17d4d8aahaayFG&ws_ab_test=searchw...

It's better to use something like Virtual Audio Cable or VB Cable to create two different audio streams.

Are you using the latest version of SDR#?