Some people are just lucky at Russian roulette.
Others prefer to avoid avoidable risks.
Each to his own.
FWIW I'm glad to hear about safer alternatives, and would be especially
interested to hear about
interlocks to avoid the HT even being enabled until the cables are in place.
Murphy lives here.
73
Gary ZL2iFB
> -----Original Message-----
> From: amps-bounces@contesting.com
> [mailto:amps-bounces@contesting.com] On Behalf Of Hardy Landskov
> Sent: Sunday, 24 January 2010 6:28 PM
> To: Bill VanAlstyne W5WVO; Edward Swynar; Dr. David Kirkby;
> amps@contesting.com
> Subject: Re: [Amps] which HV connector to use?]
>
> Just for the record, we used RG8 years ago at K6UA's to run
> high voltage
> everywhere to each amplifier from one central power supply.
> Worked fine with
> SO239/PL259 connectors. The insulation is fine. Too bad Dale
> is now SK.
> Hardy N7RT
>
> ----- Original Message -----
> From: "Bill VanAlstyne W5WVO" <w5wvo@cybermesa.net>
> To: "Edward Swynar" <gswynar@durham.net>; "Dr. David Kirkby"
> <david.kirkby@onetel.net>; <amps@contesting.com>
> Sent: Saturday, January 23, 2010 9:34 PM
> Subject: Re: [Amps] which HV connector to use?]
>
>
> >I have a clear recollection of being told, years ago, that
> the ORIGINAL
> > design use model for the UHF connector series
> (PL-259/SO-239) was for
> > connecting high DC supply voltages between transmitter
> modules. This was
> > before Google, however., so I decided to do some checking.
> >
> > Turns out there is absolutely no evidence that this tale
> has any truth to
> > it
> > whatever. I could find no indication on any of a dozen
> different pages in
> > favor of this historical assertion. This is not to say it
> has never been
> > done before, mind you -- just that this application was not
> part of its
> > original design concept.
> >
> > Here is a very good page, BTW, that covers the history and
> > characdteristics,
> > in simple language and photos, of most of the RF connector
> series in use
> > today.
> >
> > http://ecee.colorado.edu/~kuester/Coax/connchart.htm
> >
> > Bill W5WVO
> >
> >
> > --------------------------------------------------
> > From: "Edward Swynar" <gswynar@durham.net>
> > Sent: Thursday, January 21, 2010 7:24 AM
> > To: "Dr. David Kirkby" <david.kirkby@onetel.net>;
> <amps@contesting.com>
> > Subject: Re: [Amps] which HV connector to use?]
> >
> >> On 21st January, Dave wrote:
> >>
> >> "...With all due respect, using SO239/PL259 seems about
> the silliest
> >> suggestion I have ever heard. I'm not saying the insulation may be
> >> insufficient on some models made in the USA when they are
> mated, but the
> >> chance of an accident must be considerably higher with
> those sort of
> >> connectors than just about anything else in a ham shack.
> They are not
> >> designed for that sort of use..."
> >>
> >> *********************************
> >>
> >> But it WORKS, Dave---and I hasten to add that's the sole
> reason that I
> >> elected to employ them in this way: other methods resulted
> in ceaseless
> >> arcing/sparking/blowing of fuses...until one day, way-back-when, I
> >> stumbled
> >> upon the conservative DC voltage carrying abilities of large coax &
> >> matching
> >> UHF connectors, relative to my application. I was sold.
> >>
> >> As for the accident factor, yes, that potential ALWAYS
> exists in Amateur
> >> radio---and having said that, are you one of those who
> condones policies
> >> apparently espoused by the ARRL anymore, by rarely (if
> ever) featuring
> >> QST
> >> technical articles whose voltage requirements might exceed
> 12.6 VDC...?!
> >>
> >> IMHO, one has to keep one's wits about one's self at ALL
> times in Ham
> >> radio---failure to do must mean that one must have been
> quite "witless"
> >> to
> >> begin with...
> >>
> >> ~73!~ de Eddy VE3CUI - VE3XZ
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >> Amps@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/amps
> >>
> >
> > _______________________________________________
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> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
>
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