[Hallicrafters] SX-73

[Bob Krassa]

Would any of you who have TM 11-897, the Army manual for the 
SX-73, which they called R-274/FRR or R-274D/FRR, please 
look to see if your copy contains the change pages? This 
manual was originally published May 1952 and I understand 
that at least one change ("c.1" or "c-1") was later 
provided. Usually these change pages are bound or stapled at 
the front of the manual. If you have, could you scan and 
send to me?  I'll be glad to upload to BAMA.

I think these change pages will tell us a lot about the 
differences between the D and non-D models. 

Reason I think there was at least one change is that in the 
April 1953 index to TMs, the manual is listed as "TM 11-897 
R-274/FRR" while in the May 1955 index, it is listed as "TM 
11-897 R-274/FRR and R-274D/FRR changes 1". Unfortunately 
the next index I have found is not until 1968 which does not 
list this manual at all, so I don't know if there were more 
than the first change in the meantime.

Thanks and 73 de Bob Krassa KC0TDS