I wonder if the folks at Times Wire had something to do with it? Aren't they the ones that make LMR* cable that's sooooooooooooo good for outdoor repeater runs? I bet their stuff couldn't hack it under the old spec the way true RG214 could.
Bob M. ====== --- Eric Lemmon <[EMAIL PROTECTED]> wrote: > Ian, > > That information is a surprise, because the current > listing shows > MIL-C-17/75F, here: > <www.dscc.dla.mil/Programs/MilSpec/listdocs.asp?BasicDoc=MIL-DTL-17> > > No, the MIL-C-17/75F (or 75G, if it indeed exists) > are RG-214/U designs. > The "new" cable with the foil-backed polyester layer > is identified as > M17/190-00001. The old "RG" designations are > becoming obsolete, which > complicates identification. > > Since the cable OD has not changed, the same > connectors will continue to be > used. Although I have no official instruction to > follow, my personal > feeling is to crimp the foil layer with the shields > to ensure intimate > contact at each end. > > I'd sure like to know whose idea it was to add an > aluminum layer to a fine > cable like RG-214/U! > > 73, Eric Lemmon WB6FLY > > > -----Original Message----- > From: [email protected] > [mailto:[EMAIL PROTECTED] On Behalf > Of IM Ashford > Sent: Saturday, April 12, 2008 11:19 AM > To: [email protected] > Subject: Re: [Repeater-Builder] New RG-214 Cable has > an aluminum tape layer > > Eric, > > Thanks for doing that research > > I see a cable spec MIL-C-17/75G in my latest > suppliers catalogue. Is this > the new cable to which you refer? > > Also have you seen any information on connectors for > this new cable. > Specifically, do you remove the foil before crimping > the braid ? > > Ian > G8PWE > > > > ----- Original Message ----- > From: Eric Lemmon <mailto:[EMAIL PROTECTED]> > To: [email protected] > <mailto:[email protected]> > Sent: Saturday, April 12, 2008 5:49 PM > Subject: [Repeater-Builder] New RG-214 Cable has an > aluminum tape > layer > > > The discussion of RG-214/U coaxial cable prompted > me to take a look > at the > current military specifications, and I was > surprised to note that a > "new" > version of RG-214/U cable has arrived. This new > version has a > one-mil thick > polyester tape with an aluminum coating that wraps > around the outer > shield, > with the aluminum side in contact with the > silver-plated shield. > > I have just created a folder in the Files section > of this list, > entitled > Coaxial Cable Specifications. The Military > Specification for > RG-214/U cable > is MIL-C-17/75F. There is also a copy of Amendment > 1 to that > specification, > which makes it inactive for new design and shows > RG-214 to be > replaced by > M17/190-00001. I included a copy of that spec, as > well. > > One might wonder if the "new and improved" cable is > more prone to > PIM from > dissimilar metals than the original. > > I intend to upload several other specs soon, > including RG-58, > RG-213, > RG-142, RG-400, etc. Stay tuned... > > 73, Eric Lemmon WB6FLY __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
