AC measurement is certainly a bit tricky. I use an old Ballantine Labs AC
VTVM from the 1950's, seems to be the only think I own that has any accuracy
on the AC range....
WB2WIK/6
"Each success only buys an admission ticket to a more difficult problem." --
Henry Kissinger
> -----Original Message-----
> From: Phil Clements [SMTP:philk5pc@tyler.net]
> Sent: Wednesday, October 17, 2001 7:43 AM
> To: Mike; AMPS
> Subject: Re: [AMPS] AL-82 Primary Tap Settings
>
>
> The only way to properly set the transformer taps is to
> measure the filament voltage at the tube pins at each
> setting. I would start with the 220 volt tap first. If the voltage
> is within specs, you are there!
>
> Try to borrow a good voltmeter if you don't own one.
> (((73)))
> Phil, K5PC
> >
> > We have 3 Ameritron AL-82's at our local club station. The station was
> recently
> > moved into a new shack which is wired with one phase of a 3 phase 208
> VAC
> service
> > (the old shack was setup for 240 VAC). Some of the guys were a little
> worried
> > about setting the transformer taps on the AL-82s all the way down
> 208VAC,
> instead
> > suggesting that we go with the 220V taps just to be conservative. I was
> concerned that
> > this might drop the filament voltage a bit too much to achieve full
> emission.
> Any
> > reason not to run on the 208VAC taps. I am told that this is a true 208
> VAC
> drop, and
> > not just a 220V drop running on the low side of the voltage tolerance,
> so I
> see no
> > reason not to run on the 82's 208 VAC taps?
>
>
>
>
> --
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