The 6KV6 appears to be equivalent to the 6KM6 (for which there are curves, see below), it also got re-based (no cap) for shunt regulator service.
https://frank.pocnet.net/sheets/049/6/6KM6.pdf
https://frank.pocnet.net/sheets/049/6/6KV6.pdf
The 6KV6A picked up a grid 1 cooler fin and 8 more Watts. However, 6 of the extra Watts come from reducing the grid 2 Watts rating from 3.5 to 2.0 (a 1 to 4 typical ratio for grid 2 Watts and plate Watts tradeoff; shunt regulator service apparently runs at low grid 2 current and high plate V) So the A version would be a 22 Watt TV sweep tube if rated that way. The lower gm and and higher Rp of the A version datasheet are from rating the tube operation at 40 mA instead of 80 mA. (better reflecting typical pulse shunt regulators running at higher V and lower I)
gm' = (Ip'/Ip)^0.666 x gm
rp' = (Ip/Ip')^0.666 x rp
https://frank.pocnet.net/sheets/049/6/6KV6A.pdf
It's got fairly similar curves to the 21HB5 which was available at $1 back a few years. Both have the same size plate. 22KV6 is available at $6 now. Should work as well as any other Sweep tube for audio. No real stigma from the shunt regulator rating, which might turn some off to it. (the tube design is not degraded for just on-off pulse switching, of course TV sweeps are just used as switches too)
Curves below for 17KV6 in g2 drive and Twin/Crazy drive (g2 and g1 driven)
https://frank.pocnet.net/sheets/049/6/6KM6.pdf
https://frank.pocnet.net/sheets/049/6/6KV6.pdf
The 6KV6A picked up a grid 1 cooler fin and 8 more Watts. However, 6 of the extra Watts come from reducing the grid 2 Watts rating from 3.5 to 2.0 (a 1 to 4 typical ratio for grid 2 Watts and plate Watts tradeoff; shunt regulator service apparently runs at low grid 2 current and high plate V) So the A version would be a 22 Watt TV sweep tube if rated that way. The lower gm and and higher Rp of the A version datasheet are from rating the tube operation at 40 mA instead of 80 mA. (better reflecting typical pulse shunt regulators running at higher V and lower I)
gm' = (Ip'/Ip)^0.666 x gm
rp' = (Ip/Ip')^0.666 x rp
https://frank.pocnet.net/sheets/049/6/6KV6A.pdf
It's got fairly similar curves to the 21HB5 which was available at $1 back a few years. Both have the same size plate. 22KV6 is available at $6 now. Should work as well as any other Sweep tube for audio. No real stigma from the shunt regulator rating, which might turn some off to it. (the tube design is not degraded for just on-off pulse switching, of course TV sweeps are just used as switches too)
Curves below for 17KV6 in g2 drive and Twin/Crazy drive (g2 and g1 driven)
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