I don't think so.

My guess is that one reads twice as high rpm than the other when
presented with a signal. Whether this applies to the coil signal is
unknown to me.

On Sun, 2011-05-01 at 10:36 -0600, ralph meyermann wrote:

> Hmm that's a good question. Could it be possible that the higher hz is
> faster react time like the newer tv's ? I don't know im just guessing
> cause i've seen tachometers that respond fast and some slow?
>
>
> > On May 1, 2011 11:06 AM, "Rocket J Squirrel"
> > <camping.elliott@gmail.com> wrote:
> >
> > I've settled on the VDO "Cockpit Black" series of meters for Mellow
> > Yellow's upcoming gauging project.
> >
> > Looking at eguages's offerings in the 2-1/6'' diameter size, 4000
> > rpm
> > range, I find two very similar gauges.
> >
> > One is the 333 365, the other is the 333 369. They have very similar
> > prices and seemingly the exact same specifications:
> >
> > For use on 4,5,6,8 cylinder application engines with standard
> > coil ignitions, most square wave electronic control ignitions
> > with tachometer output terminal, and alternators with "w"
> > tachometer terminal.
> >
> > Eguauges does not know what difference there is between them. After
> > some
> > searching, I found this:
> >
> > 333 365 is 4,000 RPM (400–1300Hz)*
> > 333 369 is 4,000 RPM (800–2400Hz)*
> >
> > where * = For Alternator use only
> >
> > Can someone help me figure out which gauge will read correctly when
> > connected to the coil? Maybe they both will, but this difference of
> > 2:1
> > in the frequency spec gives me pause.
> >
> > --
> > Rocky J Squirrel
> > '84 Westfalia: Mellow Yellow ("The Electrical Banana")
> > '74 Westrailia: (Ladybug Trailer company, San Juan Capistrano,
> > Calif.)
> > Bend, OR
> > KG6RCR
>
>