I think a 600 watt amplifier driven by 40 watss fits
quite well into this requirement. It is actually 44
watts.
John
--- "James C. Owen, III" <k4cgy_list@yahoo.com> wrote:
> Hi John,
> Yes I am talking about GG amplifiers. Most take
> 75-100W drive
> for full output. If your Ameritron requires only 40W
> drive then
> that amp is on the verge of being illegal by FCC
> type acceptance
> standards. These standards have been proposed to be
> changed but
> to my knowledge it hasn't happened yet. FCC 97.317
> states to be
> type accepted the amp must not be capable of being
> driven to full
> designed power with less than 40 watts. Not capable
> of
> amplifying the RF driving signal by more than 15DB
> unless the amp
> has a designed power of less than 1.5 KW. To me
> this means that
> a grid driven amplifier on the market today is not
> legal since
> most of them would require much less than 40 watts.
> I'll be glad when this requirement is deleted
> from the
> regulations. It was put in to prevent CB amplifiers
> but it was a
> failure as only the hams were affected. CB'er seemed
> to just use
> illegal amplifiers and get by with it for the most
> part.
> 73 Jim K4CGY
>
> --- John Nason / NA9U <na9u@arrl.net> wrote:
>
> > 40 watts is all I need to drive my Ameritron amp
> to
> > full power. I think the Ten Tec amps take more
> input
> > power by design.
> >
> > 73,
> > John NA9U
> >
> > --- Duane A Calvin <ac5aa@juno.com> wrote:
> >
> > > 50-75W input! Yikes! You must be describing a
> > > grounded grid 3-500Z amp,
> > > because my Alpha 99 would be "tuning up" at
> about 3
> > > KW, I think, with
> > > that much input power!
> > >
> > > 73, Duane
> > >
> > >
> > > On Fri, 24 Feb 2006 08:22:12 -0800 (PST) "James
> C.
> > > Owen, III"
> > > <k4cgy_list@yahoo.com> writes:
> > > > Hi John,
> > > > You don't need an ALC line from any linear
> when
> > > using a
> > > > ten-tec transceiver. Since the ALC adjustment
> on
> > > the TT sets the
> > > > maximum power that the transceiver will
> transmitt.
> > > Just tune up
> > > > the linear as normal with maybe 50-75 watts
> and
> > > then adjust the
> > > > ALC adjustment until the power output goes to
> > > maximum and leave
> > > > it there. At that point the linear has all the
> > > drive it needs and
> > > > the transceiver won't transmitt at a higher
> > > level.
> > > > 73 Jim K4CGY
> > > >
> > > > --- John Nason / NA9U <na9u@arrl.net> wrote:
> > > >
> > > > >
> > > > > Speaking of amps, I never found a way to
> feed
> > > the ALC
> > > > > line back from the amp to the O2. Is this
> > > unecessary
> > > > > on the O2? Do I keep missing it in the
> manual?
> > >
> > > > >
> > > > > 73,
> > > > > John NA9U
> > > > >
> > > > >
> > > >
> > > >
> __________________________________________________
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> > > >
> > >
> http://lists.contesting.com/mailman/listinfo/tentec
> > > >
> > > >
> > >
> > >
> > > Duane Calvin, AC5AA
> > > Austin, Texas
> > > _______________________________________________
> > > TenTec mailing list
> > > TenTec@contesting.com
> > >
> http://lists.contesting.com/mailman/listinfo/tentec
> > >
> >
> > _______________________________________________
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> >
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> >
>
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