[Amps] high drive/low output QRO HF-2500

[Gerald Williamson via Amps]

90W drive; how much reflected?
 
73,
K5GW
 
 
 
In a message dated 2/19/2015 5:22:23 P.M. Central Standard Time,  
steve at nr4m.com writes:

Hello  all,

Took a QRO HF-2500 out of storage and put it on my 40 meter mult  station.

Tuned by the book (because I never can remember how to tune  this thing 
without the book...) and the output is low  at about 1050  watts.  This 
is with about 90 watts of drive.  When last used it  was used on 15 only, 
but always got plenty of power out.  Efficiency  looks fine at about 62% 
(700ma @ 2400 volts)

As I recall, this amp  used to drive full output with 35, or so, watts.

Power doesn't drift,  and tunes up easy.  It's just acting more like an 
SB-220 than the amp  it is.

Plate and load cap settings appear correct per the  manual.

Ideas?

73 de Steve,  NR4M
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