I have an Audition Template to mimic the effect of secured radio comms with noise ducking/driving, using native Audition Filters, (PM if you want a copy of it, as I can't seem to be able to upload it here).
Radio comms basically involve mono, bitcrushing, noise and signal issues. I've consider all tools needed as a baseline. You don't have to use them all. New communications with strong signals will sound clear and need only subtle tweaking, while older or weaker signals can have more aggressive filter settings. The real trick is both including and driving the noise introduced in system.
Place the voice in Voice track 1.
Generate a file of white noise for track 2 (Filters - Generate Noise)
The plugin chain uses Native Audition filters.
Voice track:
First we add gain, if needed.
Second, we turn stereo track to Mono.
Then we run the Adaptive Noise filter with the settings (top slider to bottom) 32, 80, 7, 20, 20, 20, 0. This creates a gating effect and produces gaps.
Then we EQ, to create a lo-fi effect. Tweak to your taste.
Then we run the tube-modeled compressor. Tweak to your taste.
Finally we add a Notch filter, selecting the 200 Hz and Octaves drop down setting to get that high end chirp.
Noise Track
In the Noise track, we add an amplify filter. A high gain will make the noise more dominate, and lower will make the voice dominate.
We also have a Dynamics Processing plugin to be driven by the Vocals via side-chain. On the settings tab, attack and release times must be quick (15ms - 84ms), and link the gain and level channels.
Master
We again add an amplifier to gain the overall mix
A post EQ, tweak to your liking.
A multiband compressor
A hard limiter
Play around with the file. Turn off the effects and then add each one to see how they apply.
Voice track settings:
Noise track settings:
Master Track Settings:
Enjoy.