[TowerTalk] Military Grounding Handbook
Brian Smithson
brian_smithson@vds.com
Wed, 13 Oct 1999 14:27:43 -0400
Does anyone else get 'Access Violation Failures' when
trying to get this document? I emailed roy_bowser@daps.mil
with no response yet.
I am inside a company firewall, but I typically can FTP.
This doesn't seem to be the problem...
??
-Brian n8wrl
> -----Original Message-----
> From: owner-towertalk@contesting.com
> [mailto:owner-towertalk@contesting.com]On Behalf Of Jimmy Weierich
> Sent: Monday, October 11, 1999 11:52 PM
> To: tcrissman@simplynet.net; ka5nez@clarc.org; towertalk@contesting.com
> Subject: Re: [TowerTalk] Military Grounding Handbook
>
>
>
> Go to http://astimage.daps.dla.mil/quicksearch/. This page should
> be headed "Tell Us What You Want!". Enter MIL-HDBK-419A in the
> "Document ID field. I suggest that you copy and paste to eliminate
> typing errors. Click on "Submit".
>
> The next page should be headed "This Is What We Found" and the
> "Document ID" entered above should be listed. Click on the document
> icon to the left of the "Document ID".
>
> The next page should be headed "ASSIST - Enterprise Access" and
> should show the "Document ID" and title of the manual. Click on the
> PDF icon below the heading "Media" to download the file.
>
> Jimmy
>
> >It didn't retrieve anything for me...
> >Terry
> >-----Original Message-----
> >From: Jimmy Weierich <kg2au@stny.rr.com>
> >To: towertalk@contesting.com <towertalk@contesting.com>
> >Date: Monday, October 11, 1999 10:18 PM
> >Subject: [TowerTalk] Military Grounding Handbook
> >
> >
> > >
> > >This manual is also available online as an Adobe PDF file. Go to
> > >http://astimage.daps.dla.mil/quicksearch/ and search for
> > >MIL-HDBK-419A in the "Document ID" field.
> > >
> > >Beware, it is a 9.8 MB file. It took about two minutes to download
> > >with a cable modem, slower connections will take considerably longer!
> > >(The internet is the only place I run high power.)
> > >
> > >It includes both Volume 1, Basic Theory, and Volume 2, Applications.
> > >However, Volume 2 appears first in the PDF file.
> > >
> > >Jimmy
> > >
> > >>Brian (and TT):
> > >>
> > >> The address and phone number for the Mil Hdbk are:
> > >>
> > >>Commanding Officer
> > >>Naval Publications and Forms Center
> > >>5801 Tabor Ave.
> > >>Phila., PA 19120
> > >>
> > >> The phone number in the HDBK, 215-697-3321, rings with
> no answer. So
> > >>you might have to call around via Directory Assistance for
> another listing
> > >>in the Pubs and Forms Center before you can get a human to
> fill the order
> > >>over the phone (as I did earlier this year but I didn't save
> the number
> >that
> > >>worked).
> > >>
> > >>
> > >>73 de
> > >>Gene Smar AD3F
> > >>-----Original Message-----
> > >>From: Eric Gustafson <n7cl@mmsi.com>
> > >>To: towertalk@contesting.com <towertalk@contesting.com>;
> > >>brian_smithson@vds.com <brian_smithson@vds.com>
> > >>Date: Monday, October 11, 1999 11:59 AM
> > >>Subject: Re: [TowerTalk] newbie, Installing a 80' crank up
> > >>
> > >>
> > >> >
> > >> >
> > >> >Hi Brian,
> > >> >
> > >> >I don't think you are asking for trouble per se. But you are
> > >> >asking for a requirement that you exercise somewhat more care in
> > >> >the design of the ground system.
> > >> >
> > >> >Only you know what the value and vulnerability of the stuff in
> > >> >and around the barn is likely to be. If it is an abandoned
> > >> >facility which is unlikely to have animals or personnel in or
> > >> >near it during a storm, that is one set of circumstances. If it
> > >> >is an active dairy operation which is likely to have people and
> > >> >livestock working in the vicinity and valuable production
> > >> >equipment in operation, that is another.
> > >> >
> > >> >The "rule of thumb is ok if no lightning protection effort can be
> > >> >tolerated. But it doesn't mean that a tower cannot be safely
> > >> >located adjacent to a tall conductive antenna structure.
> > >> >
> > >> >Buildings located next to towers are routinely lightning
> > >> >protected to the degree that the radio station inside the
> > >> >building can and does operate right through a direct hit on the
> > >> >antenna structure without any damage to the building, equipment,
> > >> >or personnel in the vicinity or even any interruption in service.
> > >> >There is an FM transmitter south of town here (Tucson, AZ) that
> > >> >gets hit an average of twice a day during our monsoon season.
> > >> >Probably, the safest possible place in the entire valley for a
> > >> >person to be during a summer thunderstorm here is inside that
> > >> >transmitter building. It is all a matter of how much attention
> > >> >is paid to the lightning protection system requirements.
> > >> >
> > >> >Start with the PolyPhaser book "Grounds for Lightning and EMP
> > >> >Protection". And get a (free) copy of MIL-HDBK-419A Vols. I and
> > >> >II. This is by far the best reference on this subject I have
> > >> >ever seen. It has both the theoretical basis and practical
> > >> >instruction relating to lightning protection. Do some reading.
> > >> >Don't stop until you understand the concept of "step potential"
> > >> >and how to control its magnitude. Then decide on where you want
> > >> >your tower based on the ground system effort required for your
> > >> >situation and what you are willing or financially able to do.
> > >> >
> > >> >73, Eric N7CL
> > >
> > >Jimmy, KG2AU <kg2au@stny.rr.com>
> > >
> > >--
> > >FAQ on WWW: http://www.contesting.com/towertalkfaq.html
> > >Submissions: towertalk@contesting.com
> > >Administrative requests: towertalk-REQUEST@contesting.com
> > >Problems: owner-towertalk@contesting.com
> > >Search: http://www.contesting.com/km9p/search.htm
> > >
> > >
>
> Jimmy, KG2AU <kg2au@stny.rr.com>
>
> --
> FAQ on WWW: http://www.contesting.com/towertalkfaq.html
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
>
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search.htm