Agreeing wholeheartedly with everyone, I see many here who revel
in amplifiers with analogue meters that display a dip or peak as
a motion-trend, and tuning is a function of watching this movement.
Bar graphs are high-tech looking, but they operate at distinct
threshold levels where the spots in between the individual devices
might be just as important, plus there's a delay.
Add to this the phenomenon I observed where a bar graph display
had erroneous illuminations because of RF feedback caused by
the very tuning process they were indicating.
If I'm tweaking a tetrode amplifier the screen current, plate current
and any grid current movements are a vital point that may just prevent
the amp from going off into oscillation, despite a neutralization
circuit.
I don't think we're going to see a quality box for $3K anymore.
Even surplus junkbox amps that are LL approach this figure
when all the bits are taken into account, much less the tranny,
tube(s) and socket(s).
Hal
W4HBM
> I agree with Vic. I can also add that I'm still not impressed with
> the LED
> readouts. Guess I'm too old fashion being partial to analog meters.
> The temp
> is a nice thing to display on front panel.
>
> Regards,
> Larry N5BIP
> > Check this baby out.
>
> > Shortcut to: http://www.danamps.com/hf_millinium.htm
>
> It's very attractive. But it's a manually tuned and bandswitched
> amplifier for about $4K. Why do we need another one?
>
> I would like to see a completely automatic unit for no more than
> $3K.
> This almost certainly means that it would have to be solid state.
> Apparently it's challenging to produce a 1.5KW solid state amplifier
> for
> the amateur market which is reliable and clean, but this is the
> direction in which we need to be looking.
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