[TenTec] Problem with Orion 2 driving an Ameritron 811H Linear

[John]

Duane....

Same experience here.  Driving my Alpha 91B with the O II with no issues at 
all.  I can light all LED's if I wish. On SSB, no problem driving to legal 
limit with 45w.

73 John W4II
----- Original Message ----- 
From: "Duane Calvin" <ac5aa1 at gmail.com>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Monday, February 08, 2010 6:22 PM
Subject: Re: [TenTec] Problem with Orion 2 driving an Ameritron 811H Linear


> What kind of amp are you driving, Tom?  If it's a grounded-grid amp, your
> values aren't that far off (most require full 100W output on the drive to
> reach full rated output.)  If it is, then I'd wonder if you're using the
> same method of measuring power from the rig.  (The Orion's power meter is
> not linear, I've found.)
>
> 73, Duane
>
>
> Duane Calvin, AC5AA
> Austin, Texas
> www.ac5aa.com
>
>
> -----Original Message-----
> From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
> On Behalf Of Tom
> Sent: Monday, February 08, 2010 4:29 PM
> To: TenTec at contesting.com
> Subject: [TenTec] Problem with Orion 2 driving an Ameritron 811H Linear
>
> I have found that my Orion 2 (w/ model 709 TT mike) will drive my linear 
> to
> a max. output of 300 watts while providing 40 watts of drive. My IC765 (w/
> the model SM20 mike) will drive the same linear with 35 watts to an output
> of 500 watts. I have switched coax leads, etc. to try to account for bad
> hardware, etc.
>
> As per suggestions from TenTec, I tune the rigs and adjust the linear
> settings using only the CW mode, tried some compression, adjusted the mike
> gain and even increased the
> TX EQ (from zero to -12 ) and nothing increased the ability of the Orion 2
> to provide more than a max. output of 300 watts. Meanwhile, the "good old"
> IC765 cooks along yielding 500 watts for a drive of 30 watts. What 'am I
> overlooking? The only variable I can see is the rigs/mikes. Has anyone run
> into a similar problem or do you have any suggestions as to what I should
> try next?
>
> Will appreciate any input you could provide.
>
> 73,  Tom N3XQ
>
>
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