What happens when there is no more stock of 6H6 dual rectifier tubes, but plenty of 6AL5 tubes? This situation clearly calls for an adapter.
Take a base from a dead tube and remove the tube by breaking it and de-soldering the leads.
Take a tube socket from an old TV chassis and wire the leads to match.
The result is a convenient adapter that can be applied to a classic radio without making any modifications to the vintage equipment.
6H6 6AL5
2 4
7 3
5 7
3 2
8 1
4 5