Here's what I did.
The AM modulation limiter will prevent the vast majority of interference to nearby devices. Odd, but overmodulation with low power will tend to cause more trouble than high power with the audio properly limited.
To prove this, I put the modulation-limiter pot "AMC" on the front panel of my Turbo. Didn't need the echo knobs. Took out that board and had a spare spot on the front panel for it.
At the time, we still had analog cable TV and a 19-inch mid-1980s color TV across the room hooked to cable. This was my RFI monitor.
Found that if I simply turned down the AMC control on the front panel until the TV behaved itself I could talk all I wanted without problems from the neighbors. Full-bore modulation with the AMC disabled would tear up the picture something fierce.
I didn't have a 'scope hookup that worked on the beam antenna, only on the dummy load. But switching to the dummy after the AMC set to make the TV happy, I would see just under 100% AM modulation.
The kicker was when I turned on the MLA-2500 amplifier. Not stock, has two 3CX800 tubes. With FULL audio, it would peak 2200 Watts. With the modulation limited to the "TV" threshold, I would only see about 1600.
But the TV didn't know I was there. Blew me away.
Used to baffle the folks I talked to. I would hear them argue about whether or not I was barefoot. The only reply I gave to that question was "Who are you kidding?" Wouldn't reply "yes" or "no", only that.
Got amused listening the other folks on the channel after I signed out with them.
One guy across town would swear I had to be amplified, since I covered up some guy a couple of blocks from him.
The next one would swear I had to be barefoot because he dropped down one channel and couldn't hear any "splash" from my audio peaks.
Go figure.
73