The amp in question here is a Amp Supply LK 800C TNY with all the Bill
Edwards upgrades.
3600 Volt no load 3- of the 3CXP 800 tubes.
just trying to make sure that in TESTING mode into a dummy load that i have
the right coax and the correct size watt meter .
So any help with this would be greatly appreciated.
Thank you
73
Chris Fox Ni4L
Ni4L Antennas & Electronics LLC
3861 Mount Olive Church rd.
Moravian Falls, NC 28654
828-855-8869
http://ni4l.com
https://www.facebook.com/Ni4LAntennas
*Hours: Monday-Friday 9:00 am-5:00 pm Eastern*
*"Chance favors the prepared mind" *
On Sun, Aug 23, 2015 at 12:00 PM, <amps-request@contesting.com> wrote:
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> Today's Topics:
>
> 1. Amp output power (Chris Fox)
> 2. Re: Amp output power (Alek Petkovic)
> 3. Re: Amp output power (Bill Turner)
> 4. Re: Amp output power (Alek Petkovic)
> 5. Re: Amp output power (Kevin Stover)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 22 Aug 2015 11:46:29 -0400
> From: Chris Fox <ni4ldipole@gmail.com>
> To: Amps <amps@contesting.com>
> Subject: [Amps] Amp output power
> Message-ID:
> <CAHpm27p=
> JF75nnH5F5bR3dGjv2jWBLNMCQb3ibfar9qZXX7XPA@mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Trying to get a fairly accurate estimate on what the output would be from a
> amp with...
> 3600 plate volts
> 3 - 3cxp800
> 100 watts drive
>
> can anyone help with the formula.
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 23 Aug 2015 12:35:55 +0800
> From: Alek Petkovic <vk6apk@bigpond.com>
> To: Amps <amps@contesting.com>
> Subject: Re: [Amps] Amp output power
> Message-ID: <55D94DAB.5030109@bigpond.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I would put my guess in at a minimum of 5kW.
>
> Alek. VK6APK
>
> On 22/08/2015 11:46 PM, Chris Fox wrote:
> > Trying to get a fairly accurate estimate on what the output would be
> from a
> > amp with...
> > 3600 plate volts
> > 3 - 3cxp800
> > 100 watts drive
> >
> > can anyone help with the formula.
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
> >
> >
>
> --
> http://www.qrz.com/db/vk6apk
> http://www.qrz.com/db/vk6ap
>
> Family Businesses:
> SP Electrical. www.spelectrical.net.au
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>
> ------------------------------
>
> Message: 3
> Date: Sun, 23 Aug 2015 00:10:46 -0700
> From: Bill Turner <dezrat@outlook.com>
> To: Amps group <amps@contesting.com>
> Subject: Re: [Amps] Amp output power
> Message-ID: <BLU437-SMTP47FCAEF8D9FDDA8D5C2EEEC0630@phx.gbl>
> Content-Type: text/plain; charset="us-ascii"
>
> ------------ ORIGINAL MESSAGE ------------(may be snipped)
>
> On Sat, 22 Aug 2015 11:46:29 -0400, Chris wrote:
>
> >Trying to get a fairly accurate estimate on what the output would be from
> a
> >amp with...
> >3600 plate volts
> >3 - 3cxp800
> >100 watts drive
> >
> >can anyone help with the formula.
> REPLY:
>
> Operating class AB, you can figure between 60-65 percent efficiency
> when tuned for 1500 watts output.
>
> Even in grounded grid, 100 watts drive will be too much, i.e. will
> push you over the legal limit of 1500 watts in the US. You will only
> need about half that.
>
> As a side note, you only need two of those tubes for a legal limit
> amp. Using three will let them run a little easier but IMO, not worth
> the extra expense and the complication of excess plate capacitance on
> 10 and 12 meters.
>
> If you operate them within their specs, two tubes will give you the
> legal limit and will last essentially forever.
>
> 73, Bill W6WRT
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 23 Aug 2015 18:13:47 +0800
> From: Alek Petkovic <vk6apk@bigpond.com>
> To: Amps group <amps@contesting.com>
> Subject: Re: [Amps] Amp output power
> Message-ID: <55D99CDB.5070402@bigpond.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>
>
> On 23/08/2015 3:10 PM, Bill Turner wrote:
> > ------------ ORIGINAL MESSAGE ------------(may be snipped)
> >
> > On Sat, 22 Aug 2015 11:46:29 -0400, Chris wrote:
> >
> >
> >> Trying to get a fairly accurate estimate on what the output would be
> from a
> >> amp with...
> >> 3600 plate volts
> >> 3 - 3cxp800
> >> 100 watts drive
> >>
> >> can anyone help with the formula.
> >>
> > REPLY:
> >
> > Operating class AB, you can figure between 60-65 percent efficiency
> > when tuned for 1500 watts output.
> >
> > Even in grounded grid, 100 watts drive will be too much, i.e. will
> > push you over the legal limit of 1500 watts in the US. You will only
> > need about half that.
> >
> Maybe even less than that with the anodes screaming along at 3.6kV!!
>
> 73, Alek
> VK6APK
>
>
>
>
> > As a side note, you only need two of those tubes for a legal limit
> > amp. Using three will let them run a little easier but IMO, not worth
> > the extra expense and the complication of excess plate capacitance on
> > 10 and 12 meters.
> >
> > If you operate them within their specs, two tubes will give you the
> > legal limit and will last essentially forever.
> >
> > 73, Bill W6WRT
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
> >
> >
>
> --
> http://www.qrz.com/db/vk6apk
> http://www.qrz.com/db/vk6ap
>
> Family Businesses:
> SP Electrical. www.spelectrical.net.au
>
>
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> This email has been checked for viruses by Avast antivirus software.
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> ------------------------------
>
> Message: 5
> Date: Sun, 23 Aug 2015 09:13:09 -0500
> From: Kevin Stover <kevin.stover@mediacombb.net>
> To: amps@contesting.com
> Subject: Re: [Amps] Amp output power
> Message-ID: <55D9D4F5.6000509@mediacombb.net>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Going through the CPII datasheet for the 3CPX800 we see max plate
> voltage of 4500V so the tubes will handle the voltage. The tube still
> has the dainty 4W max dissipation grid so if you hit it with 3600V and
> 100W you'll probably roast the tubes.
>
> The non-pulse rated 3cx800 max ratings are 2250V plate voltage, 0.6
> plate amps. Typical operation at 2200V and 0.5A with 23W of drive will
> get you 750W AB2 output.
>
> Command Technologies used to build a three hole 3cx800 amp for "export
> only".
>
> On 8/22/2015 10:46 AM, Chris Fox wrote:
> > Trying to get a fairly accurate estimate on what the output would be
> from a
> > amp with...
> > 3600 plate volts
> > 3 - 3cxp800
> > 100 watts drive
> >
> > can anyone help with the formula.
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
> >
>
>
> --
> R. Kevin Stover
> AC0H
> ARRL
> FISTS #11993
> SKCC #215
> NAQCC #3441
>
>
>
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>
> End of Amps Digest, Vol 152, Issue 24
> *************************************
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