FREE BOOKS

Author's List




PREV.   NEXT  
|<   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   76   77   78   79   80   81   82   83  
84   85   >>  
t to myself, why don't you write a letter to Norman and thank him for having friends in the right places. But I kept my mouth shut. My equipment and my staff of 20 men and 5 girls were housed on the 6th floor of the Metohikon Tamion building. When ELAS marched on Athens, there was constant firing, shelling and bombing throughout the 24 hours of the day and night for three or four weeks. The bombing was by light aircraft of the R.A.F. on the ELAS positions in the suburbs and Beaufighter aircraft straffing them with 20 mm cannon. Then ELAS set up a 75 mm gun in the northern suburb of Aharnon, and started hitting us back. When we had received several hits on and around our H.Q. building, I was ordered to move down to the second floor, to safer accommodation. I extended some of my antenna down-leads, and resumed normal service. One of our assignments was to transcribe, every day, what was said in the Greek transmissions of nineteen different countries about the situation in Greece, and to produce a daily summary in English, for the benefit of the Press Department. In the summer of 1945 we began having interference on GIN, a station of the British Post Office which operated around 10MHz, transmitting a REUTER news service for Europe on the German Hellschreiber (Hell printer) system. This was a sort of very course TV picture of 49 dots, seven by seven. The letter 'I' for instance came out as seven dots vertically, and the letter 'T' just had another six dots across the top. The letters were very crude but readable, provided there was no interference, or crashes of static. The interference, which made our tape quite unreadable, used to start around 3 in the afternoon and fade slowly away about three hours later, when the tape became readable again. I decided I would try and identify the source. All I had in the way of recorders were office-type Dictaphones using wax cylinders. I removed the three weights from the speed governor, and the cylinder spun round like mad. I managed to record for about three minutes and when I played the recording on another machine at normal speed the cylinder yielded up its secret--it was high speed morse traffic in 5-figure cypher. I typed it all out and noticed that some of the paragraphs began with the letter 'B'. I subsequently found out it was a characteristic of stations carrying Royal Air Force traffic. I sent my text to London, and three weeks later the interference
PREV.   NEXT  
|<   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   76   77   78   79   80   81   82   83  
84   85   >>  



Top keywords:
letter
 
interference
 
cylinder
 
aircraft
 

readable

 

service

 

normal

 

bombing

 

traffic

 

building


provided

 

letters

 

stations

 

characteristic

 

subsequently

 

unreadable

 

static

 
crashes
 
vertically
 

London


picture

 

printer

 
system
 

afternoon

 

instance

 

carrying

 
governor
 

weights

 

cylinders

 
removed

Hellschreiber

 
minutes
 

played

 

recording

 
yielded
 

record

 

secret

 

managed

 

figure

 

decided


noticed

 
slowly
 
paragraphs
 

machine

 

recorders

 

office

 

Dictaphones

 

cypher

 

identify

 
source