general switches/pistons on an old Johannus ?

[dragonser]

Hi,
sorry for a question that may seem to have a straightforward reply.
I'm working on the insides of a really old analogue  Johannus Organ [ it is a long story ].
anyway it seems to have had a set of general pistons marked
PP P MF F FF T   , TA and HR
the first set of six pistons I can work out, but I'm wondering if the Ta piston might be a "reeds silent" piston ?  the Hr   switch seems to switch between the Normal stops and the preset combinations. does that seem reasonable ?

regards Peter B

[Barry Williams]

That sounds about right.  HR was certainly Hand Registration.

Barry Williams

[dragonser]

Hi,
many thanks for explaining what HR means !
regards Peter B

That sounds about right.  HR was certainly Hand Registration.

Barry Williams