[Milsurplus] R-101A/ARN-6

[Mike Morrow]

>Can anybody on the list tell me (off list) what this unit is 

>It's an Automatic Radio Direction Finder. or Radio Compass.

Additional info: 

It appeared in quantity just after WWII, and I'm sure some were still in active service more than 30 years later.   It was used by all US service branches and those of Canada as well. 

It replaced the late-WWII AN/ARN-7 ADF, which replaced the early- and mid-WWII SCR-269 ADF.  It was replaced by the AN/ARN-59 and AN/ARN-83.  

Its frequency coverage is 0.1 to 1.75 MHz, MCW/CW.  It requires only 28 vdc power...no HV B+.

It was a very widely used and excellent ADF, although control boxes, loop cables, and mountings can be pretty hard to find today.

Mike / KK5F