How effective would HAM radio communication be in a SHTF, grid down, collapse - Page 5 - Survivalist Forum
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Old 09-24-2019, 01:38 AM
country_boy country_boy is offline
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Quote:
Originally Posted by JDH View Post
In the old days of rotary dial and relay step switch central offices the phone system could have survived a major CME or EMP attack. Now with the controls being all microprocessor controlled, the electronics needed to convert from copper to fiber and back, and much more the land line phone system is as susceptible to damage as everything else. Granted the systems are hardened and protected as well as current technology allows. Is it good enough? We'll have to wait and see..
The phone network today is far more robust against CME-we donít ever connect central offices together with copper anymore- fiber breaks the ground loop, and T1s ( which rarely go beyond 5 miles anymore) are pretty resistant to CME currents ( normal HDSL span power voltages exceed what CME/EMP E3 would be expected to deliver. AT&T has announced the intent to discontinue all copper lines, ( except for Uverse connection from the home to pedestal)and Vz has discontuied them in hundreds of serving wire center, and in portions of thousands of other SWCs.

Probally the network is more resistant to EMP E1/E2, as the long copper wires are gone, but the electronics themselves are more vulnerable. ( Every report Iíve read concluded the network is more robust, but you can at least argue this one.)
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