[Heathkit] Looks like a D104 Project Cont.

[Jim Brannigan]

The 9V battery drains fairly rapidly.  I put a small SPDT switch on the base 
to disconnect it.

Jim

> Early versions of the TUG stands do not switch the battery off.  Current
> drain is very low, but still enough to drain the battery faster than
> otherwise.  This is something to be aware of if you have such a mic.  Keep 
> a
> spare battery or two around, or you will find that your mic is dead when 
> you
> really need to use it to snag that rare DX.