[sdiy] A really strange find...

[harrybissell]

Not that particular model... but in general they rely on two disks rotating

(or one with a switch) with a gear ratio of xxx/yyy  like 186 to 192
(if anyone NEEDS to know the ratio I'll look for an hour and find it)
anyway, its a close approximation of the 12th root of 2.

Then your instrument is squared up, and flashes a neon bulb that
illuminates
the disk. ONE of the scales on the disk is your note, and you tune to
freeze that marking.

other than that I'm clueless as you

H^) harry

patchell wrote:

>     I have been helping my parents clean out their home as they are
> preparing to move into a retirement home up in Seatle.
>
>     My dad used to repair organs as a hobby/part time business.  One of
> the things I found today in a heap to be thrown away is a HMR
> "Strobetune 220".  My Dad said it didn't work.  I figured at the worst,
> I had a stobe wheel so I could build my own electronics around it.  I
> opened it up...man, what a KLUGE, I can't believe a company would sell
> something like this.  One of the circuits is actually built on perf
> board.  The motor is hot glued to a circuit card.  Stuff like that.
>
>     But, when I tried it out, it seems to work OK, although, with the
> way it was built, I would not be surprised that there is some
> intermittent problem.
>
>     Still, it is a stobe tuner.  Does anybody know anything about
> these...are they total crap? (It sure looks like a piece of crap!).
>
> --
>  -Jim
> ------------------------------------------------
> * Visit:http://www.silcom.com/~patchell/
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> *I'm sure glad Merry Christmas comes just once a year
> * -Yogi Yorgensen
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