[Milsurplus] Collins 671U-1 transceiver and 548S-1 tuner

[Wayne Harrah]

Hi everyone. 
 
I've been off the list for some time, as I had gotten out of the mil radios
for awhile... But I just came across this and it is intriguing me... I have
a Collins 671U-1 and matching 548S-1 tuner, which run on 24VDC... Can anyone
tell me how to find any documentation on it at all?  I'd like to try and get
it hooked up to see if it works.... I happen to have a 24VDC power supply,
too, but don't want to blow up anything by assuming ANYTHING about the
hookups...
 
Any references appreciated.  The 'google' I did on it came up pretty dry.
 
Thank you!
 
Wayne Harrah