Weird Numbers Station 3/23/2020?

Decided to browse some webSDR sites given the current situation just to see what kind of chatter was on the airwaves. (Don't have the radio gear, but I do have internet - obviously.) Then came across this numbers station. I can't zoom in further to resolve it, but it's obviously putting digits in plain-text by pulsing signals over a frequency spread. So right there in the waterfall view, it can be seen counting and doing its thing.

I thought it was weird, so some people may find it interesting.

--- Edit (3/24/2020) ---

Got info from somebody way more familiar with this stuff. Turns out it's a Link 11 transmission, however many of those are transient. Yet they have this kind of signature. A digital encoding, looking like text is likely more due to the small display and waterfall contrast settings.

From a reply in the numbers station subreddit:

"This signal does not have visually discernible text, it is a purely digital transmission.

Here are pictures of the signal in greater detail:
Note that each Link-11 heard can sound different, and the bursts

lengths can be different, depending on how many stations are in the net
and how much data is being passed.

Each Link-11 CLEW burst consist of 16 channels or tones, 1 Doppler

tone, 14 of actual DQPSK data, and one channel of Synchronization. The
tone spacing, between the data channels, is 110 Hz. When properly tuned
and in the right receiver mode the Doppler tone is at 605 Hz and the
Sync channel is at 2915 Hz. In slow mode the data rate is 1396 bits/sec
and in fast mode it is 2250 bits/sec.

To be tuned correctly (and to sound correct) for the example you have

indicated you would set the WebSDR frequency to 6942.0 kHz, the mode to
USB, and the filter width to greater than 3 kHz.

The WebSDR may label the signal, but many Link-11 sigs are transient,

changing frequency often. Some, such as the one you received, are
pretty repeatable."

[FirstToken]

This is not a numbers station, this is Link-11, also called TADIL-A, STANAG 5511, MIL-STD-6011, and Alligator. Specifically this is Link-11 CLEW (Conventional Link Eleven Waveform), there is a another type seen called Link-11 SLEW.

Link-11 is a tactical data link used by NATO forces. It started as a US specific Navy Link before being adopted by NATO. This link allows all of the connected units to share one tactical picture. The radar / EW / sonar / other sensor tracks held by any one unit are displayed on the tactical displays of all units connected to the network.