[Spooks] US Number station?

[Jochen Schäfer]

>Do you have any idea if this two-tone DTMF signal is part of the
>procedure to send an EAM? Something like <preamble><message><two-tone
>DTMF>...

Chris,

I monitored the EAMs from the 80s till the Iraq war, and these tones I know
since the mid-80 as a kind of "end" signal. But I also monitored, that it's
not always the case, that these EAMs are ending with these 2 tones, but in
the most cases. 

73

Kopf