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Eventually it will be great if the table would have all the units. According to the latest documents I have (TM 11-850 manual supplement of 8 April 1954) the following units were produced:
BC-312, -A, -C, -D, -E, -F, -G, -J, -L, -M, -N, -HX, -NX
BC-342, -A, -D, -E, -F, -J, -L, -M, -N
BC-314, -C, -D, -E, -F, -G
BC-344, -D
The BC-342 was modified for use in OA-65/MRC-2 and OA-65A/MRC-2 and ended its life as an R-336.
I have found copies of the some of the original qualification testing on the prototype BC-312 in April 1936. That probably means the design started at least a year before that. According to Sibley's "Tube Lore," the tubes used were registered by RCA in June of 1935.
BC-312 |
236 |
14598-NY-37 |
GE |
|
BC-312-D |
1189 |
1263-NY-41 |
RCA |
|
BC-312-F |
156 |
2903-NY-42 |
Farnsworth (Ebay) |
|
BC-312-M |
10707 |
31916-PHILA-43 |
CRV (RCA for Navy) |
|
BC-312-M |
13013 |
33060-PHILA-43 |
CRV (RCA for Navy) |
|
|
|
|
|
|
BC-342-D |
1413 |
1263-NY-41 |
RCA |
|
BC-342-N |
2075 |
4611-PHILA-42 |
Farnsworth |
|
BC-342-N |
178 |
14364-PHILA-43 |
Farnsworth |
|
BC-342-N |
2037 |
16133-PHILA-43 |
Farnsworth (rebuilt as OA-65-A by B&W) |
|
BC-342-N |
2517 |
4222-PHILA-44 |
CFN (Farnsworth for Navy) |
|
BC-342-N |
2837 |
10651-PHILA-44 |
Farnsworth (Ebay) |
|
These first two are curtesy of http://oak.cats.ohiou.edu/~postr/bapix/ (used with permission)
This next image is from Larry, a usenet reader:
Last modified: August 15, 2006.