[Milsurplus] ADF Bearing Indicator

[Pete Williams]

 G'day all... 

I'm putting together ADF system for demonstration... it's a ARN-83 or
commercial Collins type 51-Y4/DF203.
I need a bearing indicator  which is a 400Hz synchro receiver stator
voltages 11.8V when rotor excitation is 26 V.
Whatever is listed in table 3-3 of the ARINC Synchro System manual would
suit... I don't have that info.
Other bearing indicator from MN26 and ARN-6 are of differing excitation
frequencies.
The 'bay have a range of ADF indicators but operating parameters not
stated.
Anyone with any info reference type/mnfr model that I could use feel free to
report in.
I've got the  control box, cabling  and loop.
Thanks 
Pete VK3IZ