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Re: [TenTec] ALC action on Orion

To: tentec@contesting.com
Subject: Re: [TenTec] ALC action on Orion
From: K4IA@aol.com
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 29 Dec 2006 23:07:51 EST
List-post: <mailto:tentec@contesting.com>
Yes, that is correct - with the Orion, the lower power setting makes the  ALC 
much more sensitive.  Since the ALC has some lag and overshoot, you  can't 
rely on the ALC alone to keep you from splattering.  You have to  adjust your 
audio drive (mic gain or PSK input level).
 
Here's the part I don't get:
 
No one has suggested you back down the SSB mic gain to reduce the drive on  
your Orion to an amplifier.  Say I only need 50 watts drive - Am  I supposed to 
reduce my mic gain to get there?  Seems to me that would  leave me with a 
thin under-driven sounding audio similar to someone who talks  too quietly or 
too 
far from the microphone.  I would think you would drive  the audio fully and 
reduce the PWR control down to 50 watts.  If I remember  correctly, the 
instructions say the ALC should just flicker on voice  peaks.  That would never 
happen if you reduced the mic gain to lower your  output.
 
And yet, some say to lower the power output with PSK, you should leave the  
PWR setting on 100w and reduce the mic gain to your target output.  
 
I am away from home and don't have my Orion in front of me to try this out  
but it is making me very curious.  

k4ia
Craig  "Buck"
Fredericksburg, Virginia USA

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