[600MRG] WD2XSH/6 testing amp

[Neil Klagge]

w0yse is lookin' fer ya, Pat.


On Thu, Jun 20, 2013 at 8:15 PM, pehamel <pehamel at cableone.net> wrote:

> After five years ( about10,000 operating hours) with the same tubes and
> after many modifications to the 811 amp, I am now running double the erp
> that I was putting out with the exciter running full bore this last few
> months.
> One of the tubes developed an open filament on one side, so I tried to
> match the other three with my spares and tube checker. The spares were all
> better than the amp tubes, so now I need to reawaken the thoriated tungsten
> on the filaments of the three tubes.
> I have a way to go to get near the 20 watt ERP limit, but copy should be
> better.
> Anyway, WD2XSH/6 is QRSS10 on 475.322KC tonight until 05:00GMT.
> Your report is awated with anticipation.
> 73,
> Pat Hamel W5THT & WD2XSH/6
> W5THT at arrl.net
> Unhappy Tubes Blush, unhappy power FETs scatter plastic loudly.
>
>
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