[CTSARA] Question

[Charles Lelievre]

At these frequencies, LMR 400 is overkill. If this G5RV has a balun at the
base, then just change the PL259 and you are good to go.. Just dont change
the length of the ladder line. I will assume your RG5x is really RG8X.. and
that is fine coax for your power level.  Now if you are referring to the
Balun and the SO239 inside it has broken, either open it and replace the
SO239, or order/make another balun to match the ladder line to coax.

-C

On Mon, Apr 4, 2016 at 2:05 PM, Jon Perelstein <jon.perelstein at gmail.com>
wrote:

> I'm not familiar with RG-5X so I don't know how long it supposedly lasts in
> open air environments nor what it's impedance is.
>
> One thing to check is the impedance.  With a G5RV, it's possible that the
> coax is something other than 50 ohms in order to get proper matching to the
> ladder line and antenna.  If it's not 50 ohm, then you kind of don't want
> to replace it with LMR-400 because of the impedance mismatch it would
> create.
>
> As I understand it, LMR-400 is heavier (weight) than the typical RG-8x or
> RG-58.  Depending on what length run you have, it may be too heavy for a
> free-standing dipole in which the antenna is not supported in the center.
>
> Check first about what the coax is and its impedance.
>
> 73
> Jon
>
> On Mon, Apr 4, 2016 at 1:44 PM, Urso, Steve - Stamford, CT via CTSARA <
> ctsara at mailman.qth.net> wrote:
>
> > Good Day All:
> > I have a problem/question. My HF Diploe G5RV(full size) where the coax
> > goes into the pl259 at the end of the ladder line broke. In plain terms,
> > the pl259 came off the coax. Do I put another pl259 on the coax end, or
> > replace the coax? The coax is rg5x and it goes from the ladder line so239
> > to a MFJ (I know might fine junk) window pane. I am using the window pane
> > to bring all my antennas into my second floor shack. It has a couple
> double
> > sided so239's and a wing nut ground lug. It sits at the bottom of the
> > shacks window and feeds my 10M, 2M/440 and HF leads into the room. Now
> back
> > to the main question. Should I replace the coax with another length of
> rg5x
> > pre made from HRO or change it to LMR 400. I think I have both. Thanks to
> > all that reply Pro or Con.  73's.
> >
> > Learn from the Past, Work in the Present, Plan for the future.
> > Steve Urso - KB1YLQ
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> > 146.655MHz -600KHz PL100 Hz Analog Repeater. NOW IN SERVICE
> >
> > SARA Repeaters: NOW DIGITAL (DMR) 447.125 Out 442.125.Color Code 2.
> > LISTEN SARA DMR REPEATER LIVE AUDIO FEED.
> >
> > ECHOLINK, WB1GRB-L Node(128679) Simplex: Local RF- 147.525 PL-100 Hz.
> > RF-65 watts. 24/7  (NOT SARA RELATED)
> >
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> 146.655MHz -600KHz PL100 Hz Analog Repeater. NOW IN SERVICE
>
> SARA Repeaters: NOW DIGITAL (DMR) 447.125 Out 442.125.Color Code 2.
> LISTEN SARA DMR REPEATER LIVE AUDIO FEED.
>
> ECHOLINK, WB1GRB-L Node(128679) Simplex: Local RF- 147.525 PL-100 Hz.
> RF-65 watts. 24/7  (NOT SARA RELATED)
>