[NLRS] LMR400 and N connectors

[S. Earl Jarosh]

You are really not suppose to solder the center pin on a properly designed
crimp connector.  If it is the correct connecter size for the cable and the
correct die set for the crimp you have a far superior mechanical and RF
electrical connection with the straight crimp.  This is a cold weld to the
wire and will not suffer the oxidation effects of solder especially if salt
is introduced.  It is the only type of connection recommended for salt water
marine environments and milspec for Navy vessels.  I have use RF Industries
products for over 20 years and those cables are still as good as the day I
made them.  I spliced several cables for TCFMC 12 years ago after a squirrel
sat on the tower and chomped on them, then I put cut up bicycle inner tube
pieces over each splice closed up on each end with UV electrical tape.  The
connections never suffered RF degradation and when they recently had to take
everything down, (Golden Valley kick them out) I was told they were as shiny
as the day I put it all together.


S. Earl Jarosh, N0HZ
V.P. of Information Technology
Cell:  612.868.1313
Off:   763.545.3275
Fax: 763.546.0027
Money Centers of America, Inc. - I.T. Dept
5955 Golden Valley Rd., Suite 206
Golden Valley, MN  55422
6128681313 at cingularme.com
earl at moneycenters.com
www.moneycenters.com

-----Original Message-----
From: nlrs-bounces at mailman.qth.net [mailto:nlrs-bounces at mailman.qth.net] On
Behalf Of Stephen Hicks, N5AC
Sent: Thursday, July 30, 2009 9:04 AM
To: David Palm
Cc: NLRS Reflector
Subject: Re: [NLRS] LMR400 and N connectors



I FAR prefer the crimp connectors.  Incidentally I generally solder the
center pin but I buy the silver/gold connectors from Coaxwarehouse on eBay
(no affiliation) and bought a crimp tool (I think from the same guy).  I am
NEVER going back.  They are so easy to use and so fast and they work great.
 When working on a project and someone needs jumpers, I say "how many"
instead of "ohhh yuk."
73,
Steve


Sent from Austin, Texas, United States

On Thu, Jul 30, 2009 at 08:48, David Palm <thepalmhq at gmail.com> wrote:

>
>
> Hello all,
>
> In preparation for this weekend I was able to get my newly built 222 
> and
> 432
> quagis up 8 and 10 feet in the air last night and apply some RF to them.
> Thanks to Todd, KC9BQA, for helping me test them on the air.  We were 
> able to make the path on both bands, although 432 was extremely light.  
> I was shooting straight into the foliage of a large pine tree, so that 
> may have made a difference.
>
> My real question concerns N connectors.  I was scrambling to get two 
> new feedlines ready yesterday afternoon and, to my dismay, the pins on 
> some surplus N connectors that I had laying around are too small for 
> the center conductor of the LMR400.  And I can't really just file it 
> down a bit since it's copper-coated aluminum and it can't be soldered 
> once it's been reduced in size.  So, am I correct that I will need to 
> buy special Ns for the LMR400?
>
> On that same note, I was planning on just going with the solder-pin style.
> But I have heard a number of people advocate strongly for the 
> crimp-style connectors.  I'd rather avoid the cost of the crimping 
> tool, but I wonder if anybody has some feedback on that question.
>
> Thanks and 73,
>
> David  W9HQ
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