PTT 839 



O 



r/] 



D 

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< 



Q 

 O 



w 



H 



24 



23 



22 



21 



20 



9 



8 



7 



6 



5 



4 



3 



2 



1 





 9 

 8 

 7 

 6 

 5 

 4 

 3 

 2 

 1 

 



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"T 1 1 — I T" 



29 AUG 08 SEP 18 SEP 



DATE 1990 



PD 1 



PD 4 



PD 3 



PD 2 



PD i 



~T — I — 1 — I — I — I — I — I — r- 



8 SEP 08 OCT 



O =PERIOD 1 V =PERIOD 2 D =PERIOD 3 A =PERIOD 4 



Figure 12. Time and date transmissions were received for PTT #839. Periods (PD 1-4) 

 designate initial 2-hour transmission times. 



30 



