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[TowerTalk] Coax cables

To: <towertalk@contesting.com>
Subject: [TowerTalk] Coax cables
From: stevek@jmr.com (Steve Katz)
Date: Fri Feb 7 11:15:53 2003
The center conductor of 9913 fits a standard PL-259 center pin very well.
It's #9.5AWG and the pin inside diameter is #9.  I've never seen a PL-259
that would not accommodate the center conductor of 9913 just fine, so
whatever you have there surely doesn't meet the PL-259 specification.  (Or,
possibly the 9913 doesn't meet its own specification!)

The "Made in U.S.A." silver-teflon PL-259s work perfectly with 9913, LMR400
and all the other "oversized center conductor" cables.  I don't know what
the import duties or fees might be for you to simply order these from a U.S.
vendor, but here they cost $1 each ($USD) and are very readily available.  

WB2WIK/6



"Success is the ability to go from failure to failure with no loss of
enthusiasm." -Winston Churchill

> -----Original Message-----
> From: Lee Noonan [SMTP:vk2lee@maxnet.net.au]
> Sent: Friday, February 07, 2003 4:40 AM
> To:   Steve Katz; brewerj@squared.com
> Cc:   towertalk@contesting.com
> Subject:      Re: [TowerTalk] Coax cables
> 
> The standard readily available PL 259s in VK are marked Japan, the
> dielectric is dark brown and the center connector copper or maybe brass...
> solders easily though, and they cost around $2.50 each....
> I did buy some expensive silver plated connectors with white dielectric -
> teflon??- but the centre connector of Belden 9913 is too large for the
> centre connector of the PL 259....    can't win them all... Looks like
> I'll
> have to stick to "N" connectors with a brass or copper pin and silver
> plated
> body at $10.00 each....  there does seem to be a very large difference in
> price & Quality ??? between the US & VK  PL 259s......
> 73
> Lee Noonan VK2LEE
> 
> http://www.qsl.net/vk2lee/  photos
> http://www.qrz.com/vk2lee/  updated text
> 
> 
> 
> ----- Original Message -----
> From: "Steve Katz" <stevek@jmr.com>
> To: <brewerj@squared.com>
> Cc: <towertalk@contesting.com>
> Sent: Friday, February 07, 2003 3:53 AM
> Subject: RE: [TowerTalk] Coax cables
> 
> 
> > Hi John,
> >
> > Amphenol has made the 83-1SP with a silver-plated body for more than 40
> years and it cost less than one dollar, and is available from their entire
> distribution channel, which is massive.  In light of that, I cannot
> imagine
> any reason to use #2, #3 or #4.
> > I think the #4 types you refer to are foreign made.
> > If you buy 25 connectors at a time from Cable XPerts or The RF
> Connection
> (and probably elsewhere), you can get the silver-plated, Teflon-dielectric
> PL-259's (American made and very good) for between $.95 and $1.00 each.
> > Any time I see anyone using any other type I cringe.
> > Although, I can use the Amphenol Astro-Plated ones (very shiny nickel)
> just fine, as long as I am "home," and use them in my shop.  The Astro
> Plate
> finish takes solder very well if it's elevated to about 500 degrees F and
>  scrubbed (not filed, not sanded -- scrubbing is done with the soldering
> instrument, as solder is applied).  Takes only a second or two with a 900W
> industrial resistance soldering station, which I have.  But I can't take
> that to the top of a tower.....
> 
> > WB2WIK/6
> 
> >> > To: Steve Katz
> > > Cc: towertalk@contesting.com
> > > Subject: RE: [TowerTalk] Coax cables
> > >
> > > Hi Steve,
> > > I guess there's four categories of PL259 bodiesI've run into:
> > > 1) Silver plate (no prep required)
> > > 2) Plated brass (usually requires no filing/scuffing to achieve a good
> joint)
> > > 3) Plated brass (Astro Plate?) that does not seem to ever easily wet
> well.   I use small half round needle file to scuff to brass and area
> (1/32"
> to 1/16" around solder hole)  tin the bare base metal, then solder to
> braid
> with Mondo Iron.
> > > 4) Plated unknown (pot?) metal. Difficult to wet, and base material is
> greyish silver ( not brass).
> > >     Base material not more solderable than plating. Best application
> for
> these is lining trashcan.
> > For outside applications, I always use silver plate connectors.   I have
> a
> room containing a large number of medium power vintage stations (17 or
> 18?)
> that are in-line/switchable and are connected via a myriad of patch
> cables.
> For these applications I'll use connector types
> > > 2 or 3 if they're on hand.  If I find a buy on the silver plates at
> 'fests, they're my first choice. Even with the huge
> > > number of interconnects, I rarely encounter problems tracable to the
> connector assembly (but I've gotten pretty good at assembling them too!)
>  > I've found both my large irons for $1 each. The 200+ watter at a yard
> sale, and the American Beauty (about 125 w or so?) at a recent fest.  I
> own
> a weller gun too, and have yet to find an application that it's good for.
> For other than Chassis/sheet metal/connector soldering, my Metcal with a
> good set of tips can cover anything from point to point tube rig repair,
> to
> Manhattan style QRP ass'y.
>   73
>  John K5MO
> 
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