"Real" as it refers to the original military-spec'd construction of the cable. "Type" meaning similar to original spec but likely not exact. common differences in "Type" cable might be tinned vs. silver plated conductors, dialectric material etc. Spec RG-142 has a silver-plated steel center conductor. repeated flexing can cause the thin plating to fracture off creating duplex noise. i've personally not had this problem but it is a documented issue. Dan k8plw
--- On Sun, 3/7/10, Larry Horlick <[email protected]> wrote: From: Larry Horlick <[email protected]> Subject: Re: [Repeater-Builder] Re: LMR Cable To: [email protected] Date: Sunday, March 7, 2010, 6:24 PM What is the difference between real and un-real RG214? And what is the problem with RG-142? lh On Sun, Mar 7, 2010 at 6:24 PM, NORM KNAPP <nkn...@twowayradio. net> wrote: Those are usually the preferred types of cables. You should have no problems with either of those. I prefer REAL RG214/U., but RG400/U, RG393 or RG223/U will work. Avoid RG-142 and RG-9/U. Superflex is also a good choice. Don't even think about any LMR type or similar. N5NPO Norm ----- Original Message ----- From: Repeater-Builder@ yahoogroups. com <Repeater-Builder@ yahoogroups. com> To: Repeater-Builder@ yahoogroups. com <Repeater-Builder@ yahoogroups. com> Sent: Sun Mar 07 16:54:30 2010 Subject: Re: [Repeater-Builder] Re: LMR Cable Any problems with RG-214 or RG223 for duplexers/multi- couplers/ combiners? lh On Sun, Mar 7, 2010 at 5:50 PM, Dan Saputo <dan17...@yahoo. com <mailto:dan17...@yahoo. com> > wrote: well-documented and caused mainly by the use of foil shielding as in the lmr series. gets worse as cable ages and internal braid-foil contact degrades. Although not as big of a problem with lmr due to an insulating layer over the actual foil. beware of belden 9913 and lmr look-alikes. trouble when used duplex. Dan k8plw --- On Sun, 3/7/10, Chuck Kelsey <wb2...@roadrunner. com <mailto:wb2...@roadrunner. com> > wrote: From: Chuck Kelsey <wb2...@roadrunner. com <mailto:wb2...@roadrunner. com> > Subject: Re: [Repeater-Builder] Re: LMR Cable To: Repeater-Builder@ yahoogroups. com <mailto:Repeater-Builder@ yahoogroups. com> Date: Sunday, March 7, 2010, 4:56 PM Passive Intermod. In other words, it tends to be a source in which intermod can be generated easily. Chuck WB2EDV ----- Original Message ----- From: "rffun" <radio...@her. forthnet. gr <http://us.mc560. mail.yahoo. com/mc/compose? to=radiocom% 40her.forthnet. gr> > To: <Repeater-Builder@ yahoogroups. com <http://us.mc560. mail.yahoo. com/mc/compose? to=Repeater- Builder%40yahoog roups.com> > Sent: Sunday, March 07, 2010 3:33 PM Subject: [Repeater-Builder] Re: LMR Cable > <LMR and similar cables are not rated for low PIM> > What exactly do you mean by PIM ? > rffun > > --- In Repeater-Builder@ yahoogroups. com <http://us.mc560. mail.yahoo. > com/mc/compose? to=Repeater- Builder%40yahoog roups.com> , Larry Horlick > <llhorl...@. ..> > wrote: >> >> Indeed. I'll read the archives. Thanks. >> >> 73 >> >> On Sun, Feb 28, 2010 at 8:59 PM, Chuck Kelsey <wb2...@...> wrote: >> >> > >> > >> > The subject comes up on this list about every other week. I can only >> > assume >> > you are new. >> > >> > LMR and similar cables are not rated for low PIM, a fact verified by >> > the >> > manufacturer. >> > >> > Chuck >> > WB2EDV >> > >> > >> > >> > ----- Original Message ----- >> > *From:* Larry Horlick <llhorl...@. ..> >> > *To:* Repeater-Builder@ yahoogroups. com <http://us.mc560. mail.yahoo. >> > com/mc/compose? to=Repeater- Builder%40yahoog roups.com> >> > *Sent:* Sunday, February 28, 2010 8:49 PM >> > *Subject:* Re: [Repeater-Builder] Micor Stock Power Supplies >> > >> > I've never heard of it. As an installer, I'm always under pressure to >> > use >> > less expensive feedlines than the venerable Heliax, and I had often >> > considered LMR, but never actually succumbed to the temptation. This is >> > interesting information. Is this a well documented phenomenon? >> > >> > Anyone else like to chime in on this... >> > >> > Larry >> > >> > >> > >> > >> > >> > > > > > ------------ --------- --------- ------ > > > > Yahoo! Groups Links > > > ------------ --------- --------- --------- --------- --------- - No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2728 - Release Date: 03/07/10 02:34:00
