[CyberCard]

I pick this hand:
Axx
KQxxxx
xx
xx
and the bidding goes, opponents silent:
I Partner
1C
1H 2D
2H 2S
2NT 3H
?
Now what? Partner is quite strong (reverse + 4th suit), if he has the right values, slam would be the right contract.
If he has x Axx AKxx KQxxx, 6H is a piece of cake.
If he has xx Ax AQxx KQJxx, 6H is makeable if they don’t lead S.
If he has x Axx KQJx KQJxx, slam is out of the question, but 5H is reasonably safe.
But if he has xx Ax KQJx KQJxx, even 5H is not makeable.

If trump was a minor, TURBO would be nice. But with a major, we would go beyond game level, and I don’t want to risk that.
What I would like is to TELL partner I have 2 keys for H (‘a la TURBO’), BELOW 4H, and let him decide to try the slam, or not.
Is there a way to do that?

[Phil]

Some use 3s/3N as turbo calls.

Good 1345 should be splintering over 2h.