THE DEVELOPMENT OF SOE SIGNAL PLANNING
Appendix B. (Section D)
PERCH-DELTA PLAN.
CALL SIGNS.
PERCH-DELTA: RUV
HOME: LMN
Use only your call-sign RUV.
Homestation will use only its callsigh LMN.
Never send LMN de RUV
Homestation will never send RUV de LMN.
FREQUENCIES.
PERCH DELTA:
6185 A Main Day
6914 B
3490 C Main Night
3447 D
HOME:
6700 E Main Day
6610 F
4875 G Main Night
4918 H
FREQUENCY CHANGE SIGNALS.
RU Change your transmitting frequency to …
LM Am changing my transmitting frequency to …
SCHEDULES.
At the following times GMT:
Monday 10:00 (DF)
Tuesday 17:30 (DF)
Friday 01:00 (NF)
TRANSPOSITION TABLE.
1 2 3 4 5 6 7 8 9 0
F A B C D G I M P O
E R Q L K H J S N T
DAY INDICATING TABLE.
Sunday: 4; Monday: 7; Tuesday: 8; Wednesday: 3; Thursday: 6; Friday: 9; Saturday: 0.
ADDITIONAL CONTACTS.
You write down the time required, say 19:00 hrs.
Add the day indicating figure for say Monday.
Thus you have 19007.
Then transpose into letters from first or second of both lines, thus FPOOI or ENTTJ or FNOTI.
(Voor Perch Delta kreeg de WT-operator slechts 4 kristallen mee, of had hij ook nog 4 kristallen nodig om het homestation te kunnen ontvangen? Werd er in split-mode gewerkt, lijkt heel tijd rovend. verder lijkt het erop dat de agenten als Huub Lauwers en mogelijk Han Jordaan van een dergelijk plan gebruik gemaakt hebben, gezien het aantal frequenties dat zij ter beschikking hadden.)
(The WT operator thus needed four crystals for transmitting. Did he receive the homestation on his receiver which didn't need crystals? See the article about the A MkI, written by John Hearfield)
w.mugge@home.nl