[Amps] SB 220 with 3 400 tubes
Carl
km1h at jeremy.mv.com
Mon Apr 27 11:43:44 PDT 2009
The operational differences are minimal for CW/SSB and that swap was
done several times. You lose 200W Pd which may be critical for RTTY,
digital, and AM.
Carl
KM1H
----- Original Message -----
From: "WLI" <lgp at wlionline.com>
To: <amps at contesting.com>
Sent: Sunday, April 26, 2009 4:39 PM
Subject: [Amps] SB 220 with 3 400 tubes
>I am looking a purchasing an SB220. I have two to choose from. One
>has a
> pair of 3 400 tubes and the other has 3-500's. The one with 3 400's
> looks
> cleaner but I am not sure if the tubes are equal. Can some one tell
> me if
> the amp with the 3 400's is as good or if there are any problems with
> this
> substitution.
>
> Thanks
>
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