[BC] Power handling of 1 5/8 foam coax.

[Robert Reymont]

I doubt it is the line....   How does the impedance plot on a Smith 
Chart?  Are the sidebands up or down?  They need to be up for louder 
modulation.

Robert

At 11:46 PM 2/18/2007 -0500, you wrote:
>The answers confirm what I already figured. This station has a DX-50, and is
>50 kW non-D, yet can not supermodulate due to this line.
>Oh well...
>
>-D
>
>------ Original Message ------
>Received: Sun, 18 Feb 2007 10:27:06 PM EST
>From: "Glen Kippel" <glen.kippel at gmail.com>
>To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
>Subject: Re: [BC] Power handling of 1 5/8 foam coax.
>
>It might work if the line is filled with Freon instead of air, due to the
>better dielectric constant of Freon.  However, finding a ready source of
>R-12 may be problematical nowadays...
>
>On 2/17/07, Dana Puopolo <dpuopolo at usa.net> wrote:
> >
> > Okay brain trust....I'm in Nebraska and have a question...
> >
> > Can 1 5/8 foam coax handle 50 kW at 125% + AM modulation? The frequency
> > involved is 880 kHz.  If so, what is the safety margin?
> >
> > -D
> >
> >
> >
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Robert Reymont
Double R Consulting, Inc.
P.O. Box 42277
Mesa, AZ 85274-2277
Phone (480) 820-2439, FAX (480) 820-2514