[ARC5] R-20/ARC-5

[David Stinson]

The R-20 was built under A.R.C. # 5005.  
The R-21 was # 5006.
I have photos of these stampings.

ARA receivers used the 5000- and 7000-series drawing numbers.
AN/ARC-5 sets used 9000-series drawing numbers.

ARA receivers, under contract NOs-74912, my database showes 
multiple A.R.C. drawing numbers.  Now, there were several runs
under A.R.C. NOs-74912, but I have yet to sort-out exactly 
which is what:

ARA, Contract NOs-74912

Freq.  A.R.C. Drawing Number   Acceptance Test Dates

 .19-.55   7839   2-42
1.5-3      5005   2-42, 1-43
.52-1.5   7950   1-43
 3-6   5006  1-43
 6-9.1    5007    2-42, 7-42, 1-43, 2-43