I am sure that many on here would argue with a sign board.
----- Original Message -----
From: Carl
To: Mitch Cox ; Thomas F. Giella NZ4O ; amps @ COL
Sent: Saturday, January 22, 2011 12:13 PM
Subject: Re: [Amps] AL-811 & 572's
Im sure many of us would disagree with many of those IMD specs. The 572B is
off by at least 4-5dB.
Also realize that the Svetlana versions are using smaller anodes and non
hardened glass. They melt down rather easy during a run away parasitic.
The Chinese at least spec the Pd at 125W and the hardened glass is thinner
than Cetron.
Carl
KM1H
----- Original Message -----
From: "Mitch Cox" <ww4cox@embarqmail.com>
To: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>; "amps @ COL"
<amps@contesting.com>
Sent: Saturday, January 22, 2011 7:57 AM
Subject: Re: [Amps] AL-811 & 572's
> Here you go;
>
http://www.mgs4u.com/RF-Microwave/TriodeTubeDataCharacteristicChartbyW6LEG.pdf
> ----- Original Message -----
> From: Thomas F. Giella NZ4O
> To: amps @ COL
> Sent: Saturday, January 22, 2011 7:53 AM
> Subject: Re: [Amps] AL-811 & 572's
>
>
> Thanks for the input guys. I'm aware of the limitations of the power
> supply
> on the AL-811. I was looking for performance information about the 572B
> tube
> itself.
>
> 73 & GUD DX,
> Thomas F. Giella, NZ4O
> Lakeland, FL, USA
> nz4o@tampabay.rr.com
> John 3:16 <><
>
> NZ4O Solar Space Weather And Geomagnetic Data Archive:
> http://www.nz4o.org
> NZ4O Daily LF/MF/HF/6M Radiowave Propagation Forecast:
> http://www.solarcycle24.org
>
>
> ----- Original Message -----
> From: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
> To: "amps @ COL" <amps@contesting.com>
> Sent: Friday, January 21, 2011 12:50 PM
> Subject: [Amps] AL-811 & 572's
>
>
> >I have an AL-811 running 572B's instead of 811's. The manual says for
> RTTY
> > mode to use a maximum of 150 ma on the grid and 400 ma on the plate for
> > the
> > 811's.
> >
> > What would be the maximum grid and plate current that I could use on
> the
> > 572B's on RTTY?
> >
> > 73 & GUD DX,
> > Thomas F. Giella, NZ4O
> > Lakeland, FL, USA
> > nz4o@tampabay.rr.com
> >
> > NZ4O Solar Space Weather And Geomagnetic Data Archive:
> http://www.nz4o.org
> > NZ4O Daily LF/MF/HF/6M Radiowave Propagation Forecast:
> > http://www.solarcycle24.org
> >
> >
> > _______________________________________________
> > Amps mailing list
> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
>
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