Re: [Repeater-Builder] new member introduction
On Sat, Aug 14, 2010 at 20:32, Nate Duehr n...@natetech.com wrote: Very little, typically. Almost all have solid-state components that would be utterly dead after an EMP. Tube gear that survives EMP better is virtually all gone. And user radios are required for any repeater to be useful, and they'd all be totally dead too. Nate, your assessment then is that all repeaters within range of an EMP would be wiped out? snip So... the rest of your posting sure sounds like an advertisement for another list, which is generally bad Netiquette, unless the lists had something a little bit more in common. If an EMP can wipe out all repeaters, I would say that EMP has everything to do with repeaters. snip even though your From is a pseudonym. Personally, I find pseudonym-bearers on the Internet usually need this advice: If you want to be somebody else, change you mind. Seriously. Or at least have the pseudonym match something you are, or something you do. My email address is ZephyrNYC. Zephyr is the West Wind, and was my first DJ name. NYC is for the city of my birth. I would say that matches who I am and something that I do. If all repeaters can be wiped out by an EMP, the only way I can think of to prepare for one then is to store spare repeater components inside a Faraday cage or similar container and hope that there isn't a successive EMP after the first one. 73, Frank kF2ANK Security is mostly a superstition. Avoiding danger is no safer in the long run than outright exposure. Life is either a daring adventure or nothing. ~ Helen Keller http://en.wikipedia.org/wiki/Helen_keller - Amateur Radio Portable Operations Group http://groups.yahoo.com/group/ARPortable/ - EMP (Electro-Magnetic Pulse) Preparedness http://groups.yahoo.com/group/EMPprepare/ - Great Outdoors Radio Club http://groups.yahoo.com/group/gorc/ - Ham Radio Help Group http://groups.yahoo.com/group/HamRadioHelpGroup/ - Military and Commercial Portable Radios http://groups.yahoo.com/group/milpack/ - Survival Communications http://groups.yahoo.com/group/survivalcomm/
Re: [Repeater-Builder] new member introduction
On Sunday 15 August 2010 02:27:17 ZephyrNYC wrote: On Sat, Aug 14, 2010 at 20:32, Nate Duehr n...@natetech.com wrote: Very little, typically. Almost all have solid-state components that would be utterly dead after an EMP. Tube gear that survives EMP better is virtually all gone. And user radios are required for any repeater to be useful, and they'd all be totally dead too. Nate, your assessment then is that all repeaters within range of an EMP would be wiped out? Having talking with some folks who were charged with calculating the effects of EMP, a rough guideline is that anything you want to survive be buried in at least 20 feet underground, and more is better. An EMP is going to seriously screw us up. I think radio communications is farther down the list of problems if we get hit by one. Food, for one is going to be hard to move around. Of course, stuff things in the ground will work, gven the effort, AND not having a second one, say a month after the first, when you've taken items out of storage and are using them. Lately I'll point out that unless a lot of folks prepare in this way, it won't much matter if you've saved some stuff, will it.. snip So... the rest of your posting sure sounds like an advertisement for another list, which is generally bad Netiquette, unless the lists had something a little bit more in common. If an EMP can wipe out all repeaters, I would say that EMP has everything to do with repeaters. snip even though your From is a pseudonym. Personally, I find pseudonym-bearers on the Internet usually need this advice: If you want to be somebody else, change you mind. Seriously. Or at least have the pseudonym match something you are, or something you do. My email address is ZephyrNYC. Zephyr is the West Wind, and was my first DJ name. NYC is for the city of my birth. I would say that matches who I am and something that I do. If all repeaters can be wiped out by an EMP, the only way I can think of to prepare for one then is to store spare repeater components inside a Faraday cage or similar container and hope that there isn't a successive EMP after the first one. 73, Frank kF2ANK Security is mostly a superstition. Avoiding danger is no safer in the long run than outright exposure. Life is either a daring adventure or nothing. ~ Helen Keller http://en.wikipedia.org/wiki/Helen_keller - Amateur Radio Portable Operations Group http://groups.yahoo.com/group/ARPortable/ - EMP (Electro-Magnetic Pulse) Preparedness http://groups.yahoo.com/group/EMPprepare/ - Great Outdoors Radio Club http://groups.yahoo.com/group/gorc/ - Ham Radio Help Group http://groups.yahoo.com/group/HamRadioHelpGroup/ - Military and Commercial Portable Radios http://groups.yahoo.com/group/milpack/ - Survival Communications http://groups.yahoo.com/group/survivalcomm/ -- STeve Andre' wb8wsf en82 Disease Control Warden Dept. of Political Science Michigan State University A day without Windows is like a day without a nuclear incident.
Re: [Repeater-Builder] new member introduction
On Aug 12, 2010, at 9:09 PM, Zephyr wrote: Thanks for having me in your group. I am a long-time military veteran and a paramedic. I hope to learn a lot from the group. One of the reasons I joined the group is to find out what kind of EMP hardening is considered when designing and building repeaters? Very little, typically. Almost all have solid-state components that would be utterly dead after an EMP. Tube gear that survives EMP better is virtually all gone. And user radios are required for any repeater to be useful, and they'd all be totally dead too. So... the rest of your posting sure sounds like an advertisement for another list, which is generally bad Netiquette, unless the lists had something a little bit more in common. But I'll give you the benefit of the doubt since you used a real callsign and name on your signature line, even though your From is a pseudonym. Personally, I find pseudonym-bearers on the Internet usually need this advice: If you want to be somebody else, change you mind. Seriously. Or at least have the pseudonym match something you are, or something you do. Anyway, to finish answering the question: About the closest repeaters get to EMP Hardening outside of the military world (if even then...), is that a lot of repeaters in the West are in old ATT microwave facilities that were built as blast-hardened for specific distances and levels of nuclear bombs. The gear that used to live in them was hardened for various levels of EMP, but that gear is long-gone, removed from the buildings when ATT scrapped them and the military stopped paying. They have other communications systems and links today. The buildings will probably be standing for another 100 years. The towers are built hellaciously strong, too... but are showing signs of age. Even the outhouses were over-engineered, and I have an engineering drawing of an official ATT outhouse around here somewhere. Those were not blast-hardened nor EMP hardened, so apparently if you were unlucky enough to be caught at the site during a nuclear exchange, you might not have modern toilet facilities afterward. A small price to pay, I suppose. ;-) -- Nate Duehr n...@natetech.com
