Modulation impact when amplifying a DSB signal?

[kd4e]

OUCH!  3-4KW peaks.

In addition to the 6AR11 I am also looking for some 407A/5847A's to try
with this project.

The goals are simple, small, low voltage, and all-tube.

The target is a 40M DSB QRP exciter and - using a DSB modulated RF stage
using a single dual-pentode tube at 125v plate voltage.

The post-DSB stages will require some care to be linear but are less 
complex
than a tube-type SSB modulation design - and if I let a little carrier 
slip in
an AM receiver at the other end will detect the reduced-carrier DSB OK.

>  In the 70's , I maintained an AM transmitter that had a low level (
>  25 watt transistorized exciter ) and that fed an AB1 ( or maybe A )
>  4CX3000 linear amp that output 1KW Carrier/4KW peak.  It needed that
>  3000 watts of plate dissipation at 25-30% efficiency.  A Gates
>  Vanguard.
>
>  Don WA4NPL
>
>
>  Quoting kd4e <doc at kd4e.com>:
>
> > Simple = grids & screens push-pull, plates parallel.
> > Perhaps using a single dual pentode tube, 6AR11.
> >
> >
> >>> I am thinking of this in terms of a QRP DSB exciter using low
> >>> plate voltage (125v) versus having to manage modulation at a
> >>> higher power stage.
> >>>
-- 

Thanks! & 73, doc, KD4E
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