Station X August 25, 1943
Dear Mr Oswald
Can you decipher this
message? We know the internal
key. The external key (QEP56) is the same as the message
from which we deduce the internal key. We can therefore
use the relative key 1,1,1,1,1,1,1,1,1,1,1,1,1.
As you start using
the SZ42a here are two documents that
I advise you to read before trying to decipher the message.
The operation of the SZ40 and
additions related to the
SZ42a.
Good Luck!
Major Tester
QEP569
UNUM9999
FCOGO/ZUKHFIWESK48KGPFCW4EHZTMBKFPDKO4J9O/SGVKUQZE
HU+XUCIECEDXXX4Z4LBDJF8QFX/CTRFE9VZHZLMYH/YZSYMSYV
4/M3ZHMNEGTKL8HVLHTYTZQD4YAXFDC///TCTE+HMNOBOZOCDS
ZNV3MBPXTK+8OGFVFIQYOPUZPQ4V8ULVOGXDVQFXQ/YXL/G43Q
GEAMOKSRNT3FJBBAP/+N4+XZKWTLFDZZGF/XW4+QFYVIOS/3F/
9OH+/O8T9T4BVFD33E9G4MFUCFH8PBQYACSVZCOL98GAZU4AFC
GXA3P9W3BSRGK+OTSGQHZXLABIWJDN3LO+8IA4DJIVGEYPWUND
N4FU49HA9DHUAUGPTHTTL/MUUNECE+TMREYOSXH4Y9GQ4H9SAM
LBSIYVAA8+CA4NEUPOYVCKSWL34UQBZI+WBGCHDWBO4YK9XN3C
WO8/84HRAM8E4UPO3FQSCV3ZPTO+ZM439H8QBYLI/C8VFWBRJX
LAVHLO9M4UZ/RKWOG9ZB8WYRYCKUT8XK8DPD8UFS4GHCXQMTXK
QDXL4BINNHA/AKKCA/NKJEEN9FLPJ8WHL8EEHU/9KM+9GFK4/Y
MUKSNVU+LDO/FYWBS/ZGJZXDXU4V/PLHZE+IO/ZYH8M94KHQ
...xxxx....xx....x.xx..x..xx.x.xx.x.xxxx.
xx..xxx.xx...x.x.xx...x....xxx.
..xxx.xx..x....xxx..xx.xx..xx
..xx..x.xx..x..xx..x..xxxx
.x...x.xx..x...xxx.xxx.
xxx.x.xx..xx..xx...xxxx.x.xx.xx...xx....xxxx.xx..xx...xx....x
x.xxx.x.x.x.x..x.x.xxx.x.x.x.x.x.x.x.
..x.x.x.x.x..x..x.xx.xx.x.x..xx.xxx..xxx...
..x.xx.x.x.x.x.x.xx..xx.x..x.xxxx.....xxx..x.xx
x.x.x.x.x.x.x..x..xx.x.x.xxxx....xxx...xxx.xx..x..x
x.x..xx.x.x.x.x.x.xx.x....xx..xx..xx.xxxxx.x..x....x.
.x.x.x.x.xx...x.x..xxx.xxxx.xx.x....x...x..xx.xx..xx..x.x.x