[TenTec] Centurion and AM

[Bob McGraw - K4TAX]

The Centurion runs a pair of 3-500's {not 811's} and is rated at 1200 watts 
PEP output.  So 200 to 250 watts of carrier modulated 100% is 800 to 1000 
watts PEP.  Nothing wrong with this as I am one that did exactly that with 
no issues.  There is a duty cycle rating that needs to be followed but 
everything else works.

73
Bob, K4TAX






----- Original Message ----- 
From: "george fritkin via TenTec" <tentec at contesting.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Friday, August 01, 2014 7:28 PM
Subject: Re: [TenTec] Centurion and AM


200 to 250 watts AM results in 800 to 1000 watts PEP at 100% modulation. 
Three 811 tubes can not handle that power. However if you are using low 
level AM from your xcvr you probably won't get 100% modulation so it might 
not be a problem. If it were me, I would drop the power to 150 watts to be 
safe

Just my opinion

George, W6GF


On Friday, August 1, 2014 4:57 PM, Robert <rmcgraw at blomand.net> wrote:



Yes. Run about 200 to 250 watts of carrier BUT tune it for max output with 
100 watts of drive.   Then switch to AM mode and adjust drive as necessary. 
Do not change amp tuning after switching to AM mode.



73
BOB, K4TAX


Sent from my iPhone

> On Aug 1, 2014, at 5:40 PM, Timothy Johnston 
> <timothy.f.johnston at gmail.com> wrote:
>
> Can the Centurion (422b) be used with AM mode? The manual does not mention
> it.
>
> 73 de Tj, K4TFJ ...
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