If the input power remains constant and output power decreases then power
difference would be converted to heat.
Steve Ellington
N4LQ
When two wrongs don't make a right, try three.
----- Original Message -----
From: "Carl Moreschi" <n4py@earthlink.net>
To: "tentec" <tentec@contesting.com>
Sent: Sunday, March 10, 2002 7:57 PM
Subject: Re: [TenTec] Re: Tuners
> Steve,
>
> With this scheme, the input power does not reduce. The actual
> output power will of course reduce, but you are always transmitting
> the most you can without destroying the finals.
>
> Carl Moreschi N4PY
> Franklinton, NC
> ----- Original Message -----
> From: "Steve Ellington" <n4lq@iglou.com>
> To: "Carl Moreschi" <n4py@earthlink.net>; "tentec" <tentec@contesting.com>
> Sent: Sunday, March 10, 2002 11:06 PM
> Subject: Re: [TenTec] Re: Tuners
>
>
> > I wasn't aware of that but if the drive is reduced to prevent the finals
> > from drawing more than 20 amps then isn't the power reduced anyway?
> >
> > Steve Ellington
> > N4LQ
> >
> > When two wrongs don't make a right, try three.
> > ----- Original Message -----
> > From: "Carl Moreschi" <n4py@earthlink.net>
> > To: "tentec" <tentec@contesting.com>
> > Sent: Sunday, March 10, 2002 5:14 PM
> > Subject: Re: [TenTec] Re: Tuners
> >
> >
> > > The Omni VI and Omni V had the best protection I've ever seen
> > > for mismatched antennas. Instead of folding back the transmit power
> > > by sensing SWR, they have a collector current sensing circuit that
> > > adjusts drive so that the finals can never draw more than 20 amps.
> > > These two radios do not require a power supply that shuts off with
> > > excessive current.
> > >
> > > It is too bad they dropped this circuit in the Pegasus and Jupiter.
> > > I bet they will have it in the Orion.
> > >
> > > Carl Moreschi N4PY
> > > Franklinton, NC
> > > ----- Original Message -----
> > > From: "George, W5YR" <w5yr@att.net>
> > > To: "John Buck" <kh7t@arrl.net>
> > > Cc: <tentec@contesting.com>
> > > Sent: Sunday, March 10, 2002 8:56 PM
> > > Subject: Re: [TenTec] Re: Tuners
> > >
> > >
> > > > John, how does this relate to the high-speed circuit breakers built
in
> > to
> > > > TT power supplies and required if non-TT supplies are used?
> > > >
> > > > Just curious, since I read your story and then I read other postings
> > about
> > > > how a low impedance load drives the collector currents to 30 amps
> almost
> > > > instantly and if the fast breaker doesn't operate, poof! there go
the
> > > > finals . . .
> > > >
> > > > Straighten me out! <:}
> > > >
> > > > 73/72/oo, George W5YR - the Yellow Rose of Texas
> > > > Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
> > > > Amateur Radio W5YR, in the 56th year and it just keeps getting
better!
> > > > QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK
11735
> > > > Icom IC-756PRO #02121 Kachina 505 DSP #91900556 Icom IC-765
#02437
> > > >
> > > > All outgoing email virus-checked by Norton Anti-Virus 2002
> > > >
> > > >
> > > > John Buck wrote:
> > > > >
> > > > > The TenTec design approach of designing a Crunch proof 100 watt
> > > > > amplifier with at least a 3 to 1 full power capability will make
it
> > easy
> > > > > to use many antennas over the whole band without tuner and without
> > > > > blowing up the radio.
> > > >
> > > > _______________________________________________
> > > > TenTec mailing list
> > > > TenTec@contesting.com
> > > > http://lists.contesting.com/mailman/listinfo/tentec
> > >
> > > _______________________________________________
> > > TenTec mailing list
> > > TenTec@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/tentec
> > >
> >
>
> _______________________________________________
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> TenTec@contesting.com
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>
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