[TenTec] AMP driveOrion II versus Icom Pro II

[Ron Castro]

How are you measuring output power?  If you use a peak-reading meter, you 
should see the same PEP output as you do with the radio in CW, but I have 
noticed, as have others on the list, that the average power on SSB is less 
than from other rigs.  I suspect this has to do with the digital software 
ALC overriding the hardware analog ALC.  Hardware ALC will give a higher 
average output, especially when pushed hard, although this may come at the 
expense of increased IMD and poor CW pulse shape causing key-clicks.  I 
think that the software ALC is rigged to pull back the drive and hold it 
back just when the hardware ALC starts to activate.

I would like to see TT address this in an update since the current method, 
while very conservative, may be more than is needed.  Letting the hardware 
ALC push higher into its range would increase average SSB power without 
introducing distortion or splatter, although the action in CW seems to work 
just fine.

                     Ron N6IE
                www.N6IE.com



----- Original Message ----- 
From: "Michael W Elliott" <kq0b at sbcglobal.net>
To: <tentec at contesting.com>
Sent: Thursday, April 05, 2007 6:57 PM
Subject: [TenTec] AMP driveOrion II versus Icom Pro II


>I am finding that the output drive from the Icom Pro
> II  produces better output to my Alpha 99  versus the
> Orion II. THat is 35-38 watts from the PRO II.  Only
> diff is changing of the transceiver.  I use a
> Ameritron ARB-704 and a Nye Viking Tuner in the line.
>
> What could be causing this to happen ??
>
> I can consistently get 1500 out driving the Alpha 99.
> Orion I do not get 1500.
>
> Anyone else seen this ??  Is there a setting I am
> missing with the Orion..
>
> Please contact me offline if you have some
> suggestions.
>
> de
> KQ0B
>
> Michael W. Elliott, CISSP
> (Certified Information Security Specialist Professional)
> THE INSIDE ADVANTAGE -
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