It works more efficient with 2 tubes if you are satisfied with 1500-1600W
and that usually requires tweaking the input.
With 3 tubes it tends to be a bit unstable on 10M due to incomplete
neutralization.
The usual padder and blocking cap caveats hold with all their amps except
the LK-450 and LK-750.
Carl
KM1H
----- Original Message -----
From: "Sam Carpenter" <sam@owenscommunication.com>
To: <amps@contesting.com>
Sent: Tuesday, March 16, 2010 10:47 AM
Subject: [Amps] Amp Supply LK550
> Anyone out there have one of these using RFP tubes? What are you seeing
> for
> output on 75 and 20 meters? Are these holding up through the years? I have
> heard that there are some issues with cheap caps in the RF section and
> some
> issues with 160m.
>
>
>
> Sam Carpenter, N9FUT
>
> Owens Communications, Inc.
>
> 1815 21st Street
>
> Columbus, IN 47201
>
> Office - 812-376-9652
>
> Cell -812-325-5735
>
> Fax - 812-376-9729
>
> www. owenscommunication.com
>
>
>
>
>
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