rca production number to part number cross

[damen]

Yes, the 274 is RCAs EIA? code number, 70 probably means 1970, 24 may be the week of and 3 is the day of the week. I have a drawing number to RCA part number catalog. Last week I looked up several flyback numbers for a friend who came into a stash on NOS RCA flybacks and I remember finding what chassis went with what transformers by checking service information parts lists.

[zeno]

Originally Posted by damen

Yes, the 274 is RCAs EIA? code number, 70 probably means 1970, 24 may be the week of and 3 is the day of the week. I have a drawing number to RCA part number catalog. Last week I looked up several flyback numbers for a friend who came into a stash on NOS RCA flybacks and I remember finding what chassis went with what transformers by checking service information parts lists.

Sounds right to me. RCA parts boil down to a 6 digit ## issued consecutively.
The 274 is the EIA code for RCA so RCA BUILT that part.
" Drawing" numbers are on big parts such as FBT's. Most end in -501
but I never figured out any pattern with them. We did have a paper cross
for drawing to 6 digit part ##
Other numbers were used like KRK for tuners, CTC color chassis, M for modules & other sub assys.
In the end the 6 digit ## is the start for finding parts.

73 Zeno
LFOD !