[Hallicrafters] xtal oven question

[Nash4447 at cs.com]

Fellas

I acquired a small octal socket xtal oven made by the James Knights Co        
                        
(later called CTS Knights) designated as their model JK02.  The thing was 
made for Motorola back in the 50s and also bears a Motorola part number. On the 
outside it says 6-24 volts. 

Finding the xtal positions was no problem at all but I am at a loss as to how 
to 
determine the oven  voltage connections.

1. Would 6-24 volts mean that it would work at either 6 or 24 volts or 
anything in between as well ? And is it  AC volts or DC volts or would it make a 
difference?

2. There are 3 pins on the octal socket for the oven coil, pins 1,3,7.  The 
DC resistances between the pins are : 1-3 is 100 ohms. 1-7 is 100 ohms, and 3-7 
is 
6.5 ohms.   How would you guess you would tie the pins together for  whatever 
voltages you needed to power the oven ? I am hoping I can use this thing on 
12VAC.

Thoughts please !

Glenn K6PZT