The 811A tube in its native condition. Blown to Hades.

[Monk]

You are right. I had a brain fart. The 807 is basically a 6L6 on steroids. Both are electrically similar. Older broadcast transmitters used 807 in both the RF driver stage as well as in the audio stages from preamp up to modulator drivers. No idea why I said 811A. Must have posted that before my morning coffee.

To the old timers, raising a 807 to all that have gone on to better futures.