Phrack_-_Complete_Telephone_Switching_Guide.txt | ||
Providence Cooperative Survival Communications FAQ Ver 1.12.txt | ||
Providence_Cooperative_Survival_Communications_FAQ_Ver_1_12.txt | ||
Radio Amateur's Handbook.pdf | ||
The_Tongue_and_Quill_-_Air_Force_Writing_Communications_-_AFH_33-337.zip |