The receiving equipment is a standard CW illuminator, see compatible model here: https://www.schneier.com/blog/archives/2014/01/ctx4000_nsa_exp.html https://ww

The receiving equipment is a standard CW illuminator, see compatible model here: https://www.schneier.com/blog/archives/2014/01/ctx4000_nsa_exp.html https://www.schneier.com/blog/archives/2014/01/ctx4000_nsa_e...