alistair_m Posted 14 February , 2018 Share Posted 14 February , 2018 Hi Im hoping that some knowledgeable member of the forum could provide a little more information about the "I-Toc" or Intelligence Telephone System. From what I can work out, the system was effectively a listening device, that consisted of some kind of "V" shaped induction loop, that could intercept enemy transmissions. My grandfather, Lt BB Murdoch (initially RFA), transferred to 2nd Division Signals as Wireless Officer at the end July 1917 and was apparently present at an IToc Course on joining the Signals. There doesn't seem to be much info around on the WWW unfortunately. Regards Alistair Link to comment Share on other sites More sharing options...
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