[ARC5] Re: [Milsurplus] ATC-1 and T-47/ART-13

[wf2u at ws19ops.com]

Mike,

I think even the Russians used generic tuning books  with their ART-13  
clones and not serial number matched to the transmitter.
My R-807 transmitter came with the tuning book, which says that it's  
for the RSB-70 type transmitter. The RSB-70 is the early nomenclature  
for the Russian ART-13 clone. Later, when they established their own  
"JAN" system, they renamed it R-807 (R-8xx series designates airborne  
radios).

73, Meir WF2U
Landrum, SC


Quoting Mike Morrow <kk5f at earthlink.net>:

>> A pair of ART-13/ATCs, item # 150246615761
>
> These are both very nice examples of USN units.  The associated   
> description, as expected, is inaccurate in places.  Both units,   
> apparently surplused to some airline, are former USN units.  The   
> T-47/ART-13 was a Navy unit, not Army, and thus would not have   
> served on B-29 aircraft.  The NXsa and NXss numbers are incorrectly   
> cited as serial numbers rather than Navy contract numbers.  The US   
> Army used instead the improved T-47A/ART-13.  I guess I'm too picky.
>
>> Very interesting. Does anyone know if the tuning book would
>> have been shipped along with the set? I don't see it.
>
> I once saw a "still in original crate" T-47A/ART-13 about 15 years   
> ago that had the tuning book present (just one data point).  The   
> T-47A/ART-13 is a USAAF unit that usually has the book attached by   
> rubber-covered metal lanyard to the transmitter, unlike the loose   
> books on USN units.
>
> There are three major variations of the tuning books.  Although   
> sometimes done, there was no point to serializing tuning books to   
> the transmitter.  The data is identical for all ATC, ATC-1, and   
> T-47/ART-13 units with the later type of CFI unit installed.  ATC   
> and ATC-1 units that have the early type of CFI unit also have   
> identical tuning books, but different calibration points are marked.  
>   The tuning books of all USN units provide data for tuning  
> intervals  as small as 1 kc at the low end and as large as 10 kc at  
> the high  end of VFO range.  The thicker tuning book for the USAAF's  
>  T-47A/ART-13 provides tuning data at 1 kc intervals throughout the   
> entire VFO range.  It can do that because the HF VFO dial of the   
> T-47A has a vernier scale that USN units lack.  If you are searching  
>  for a tuning book for your unit, it would be best to locate the  
> book  appropriate for your unit.  They are a lot harder to find than  
> is  the transmitter, but at least the common pdf versions of the   
> operating and maintenance manuals contain the needed tables.
>
> Mike / KK5F
>
>
>
>
>
>
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