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[Amps] ALS-1300... IMD ??

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Subject: [Amps] ALS-1300... IMD ??
From: "Jim Thomson" <Jim.thom@telus.net>
Date: Wed, 30 Dec 2009 03:19:01 -0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Gents

I understand the  new ALS-1300 uses  8 x finals.     Are these  MRF-150's ??    
  At 1200 w pep out... that's   150 w pep out per device.      That's a bunch. 

What is the TX  IMD on this amp, when running full bore  at  1200 w pep out ??  
  I suspect it won't be good.   The ALS-600 is only -25db   


On a similar note,   I noticed that  the eff on my  1000-MK -v  is  aprx  
50%... at 200 w out.       With power reduced to 100 w...... eff is down to 36% 
    

At 50w, it's worse still.  

I'm not impressed with the SS  finals so far.... eff wise.   

I wonder if this new ALS-1300.. or any of the existing  KW output  SS amps   
have the same reduction in eff... when power reduced.   

Tnx......... Jim   VE7RF
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