[R-390] 6DC6 Replacement

[Roger L Ruszkowski]

Fellows,

Warning Solid state devices discussed in this post.
POST NOT SUITABLE FOR ALL READERS.

What ideas are there for plugging a transistor into the
6DC6 RF amp socket of  the R390/A.

I am looking for:
equal or better sensitivity.
equal or better gain.
lower device noise.

to produce

An over all receiver improvement in the signal to noise whatever

Good 7 pin metal relay cans exist to house (conceal) [shield]
the device.

Considering the nature or the RF deck underside,
I am going for a plug and pray modification
into the tube socket on the top side.

What's been kicked around and deemed undoable
because it violates nature?

God knows there is no need to replow
sinful un natural fields of thought.
So any sinful ideas you can post to help me
avoid them will be welcome.

What's been considered that has merit?

Roger KC6TRU San Diego