[Antennas] Antenna lead in coax
Alan C. Zack
[email protected]
Thu, 27 Nov 2003 13:49:04 -0800
Well, I remember having to learn how to use a Pickett slide rule the
first week of Electronics School long before there were calculators
(and having to take ham exams at the FCC office, drawing block
diagrams, fixing schematics, etc). I used to fly the actual planes
that are now in museums or are static displays. How's that for an old
Fart?
Robert Lay wrote:
>
> Jim must be a really old fart - when was the last time anyone referred to
> MHz as Megacycles?
>
> I remember when I worked at WCSI in 1948 with another young broadcast
> operator who drove a Harley Davidson 125. The announcers would sometimes
> give the station break with "WCSI, operating on 93.7 Megacycles and 1
> Motorcycle"
>
> Bob Lay (W9DMK) in Dahlgren, VA
> http://www.qsl.net/w9dmk
> ----- Original Message -----
> From: "Tom Horton" <[email protected]>
> To: "Jim Isbell" <[email protected]>; <[email protected]>
> Sent: Tuesday, November 25, 2003 11:39 AM
> Subject: Re: [Antennas] Antenna lead in coax
>
> >
> > >I am planning a linear capable of 2.5KW PEP on SSB up to 30 MC. (4-1000A
> > >at 4500-6000 volts plate)
> >
> > Really, 2500 watts PEP ?
> > The last time I looked it was still 1500 watts PEP. Of course, I'm old and
> > may have missed something.
> > Why the overkill?
> > Tom K5IID
> >
> >
> >
> >
> > At 04:01 11/25/03, you wrote:
> > >I am planning a linear capable of 2.5KW PEP on SSB up to 30 MC. (4-1000A
> > >at 4500-6000 volts plate)
> > >
> > >I want to make sure my antenna cable can handle it.
> > >
> > >In looking at cables I find that LMR-200 (Hi Performance RG-58) is
> capable
> > >of 1050 watts at 30 Mhz. Just how much does that translate to in power
> > >level SSB PEP? Is there a rule of thumb for compairing cable power
> > >capability when I assume that the number usualy qouted is for CW power
> > >capability?
> > >
> > >RG213 and LMR-400 look like they could easily handle my power output but
> > >are a bunch more dollars.
> > >
>
--
__________________________________________________________________________
Alan Zack
Amateur Radio Station K7ACZ
Las Vegas, Nevada, USA
Quality Engineer, The Boeing Company, Retired
Aviation Chief Warrant Officer, U.S. Coast Guard, Retired
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