[Amps] Topband: PL259 type connectors for RG11 LMR400

[Jim]

I agree with you Jim on LMR400. I don't like how when I cut off a piece 
that has been outside, there is white dry corrosion inside of the jacket.

I got a bunch of 100' pieces from a project that were un-used so I tried 
it. Always used type N and UHF connectors for the braid though.


Thanks
73
Jim W7RY

On 4/8/2021 4:18 PM, Jim Garland wrote:
> I agree completely with Frank about the virtues of the DXE-PL259CS8U “Next Generation” UHF PL259 connectors. (Actually, I pretty much always agree with Frank, whatever the topic.) One thing I especially like about these connectors, aside from their ease of installation, strength, and adaptability to all RG8 style coax cables, is how easily they thread onto a female mating connector without cross threading. They are about as foolproof as one can imagine, and I find myself cutting the ends off good jumper cables and replacing their old style PL259s with these new ones just to avoid future problems. I think the ability to solder the center pin and only crimp the braid is a real plus.
>
> On a related topic, I’ve stopped using LMR400 and LMR400UF coax completely for HF work, using instead trusty, old-time RG-213, with its untinned copper braid. I find the aluminum foil in LMR cables unneeded and time-consuming to work with, and the source of failures when mechanically flexed. Soldering to the foil is near impossible, especially when I find myself belted into a tower!
> 73,
> Jim W8ZR
>
> Sent from Mail for Windows 10
>
> From: donovanf at erols.com
> Sent: Thursday, April 8, 2021 1:58 PM
> To: 160
> Subject: Re: Topband: PL259 type connectors for RG11
>
> The DX Engineering DXE-PL259CS8U-12 crimp coax connector
> with solder center center pin should work perfectly on RG-11.
>
>
> I fold back the RG-11 center conductor about 1/4 inch to provide
> more surface area for soldering
>
>
> 73
> Frank
> W3LPL
>
>
> ----- Original Message -----
>
> From: "Rick Kunath via Topband" <topband at contesting.com>
> To: "Raymond Benny" <rayn6vr at gmail.com>, "160" <topband at contesting.com>
> Sent: Thursday, April 8, 2021 7:39:36 PM
> Subject: Re: Topband: PL259 type connectors for RG11
>
> DX Engineering has some that would work I think. It's a crimp on the
> shield and a soldered center pin.
>
> https://www.dxengineering.com/parts/dxe-pl259cs8u-12
>
> Not sure if that would work for your application? I suspect that the
> larger sized center pin needed for 50 ohms would make a crimp to the
> center pin problematic on 75 ohm cable in a 50- ohm connector.
>
> I've never used these connectors before but I might now that I see them.
>
> Any cables I make up with PL-259 connectors i have been soldering both
> the shield and the center pin. On the shield end I strip the jacket and
> flux and tin the braid. Then I measure for center pin length, and use a
> tubing cutter to cut the tinned shield to the right dimension, clean the
> cut edge to remove any bits of metal and screw on the PL-259. After that
> I remove the tip of a Weller 125 watt soldering gun and after fluxing
> the 4 solder holes in the PL-259 I bridge the connector across the
> soldering gun ends where the tip usually goes. The connector becomes the
> tip, heats up quickly and a quick application of solder and its soldered
> all around. I let it cool before moving it and then quickly solder the
> center pin and trim it.
>
> I've had good luck doing that over the years (so far).
>
> For N connectors it's always a shield crimp but I solder the center pin on.
>
> Rick Kunath, K9AO
>
>
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