ISO 9000 Meets Heathkit

[Richard Post]

Gordon,

The IM-2410 is  the last Heathkit I  built / bought from Heath. <<insert
deep drawn-out sniff   :-(   and sad face >>  I use it to keep my Heath
SG-8 sig genny (as well as my URM-25D) honest when aligning boatanchors.  I
usually run past WWV at 10 MHz and zero beat on the receiver under test to
verify the counter's accuracy each time I use it.   Haven't needed to
adjust it much since building it in B.C.  (before computers).   So for us
uninitiated, what is ISO 9000 (reply off the reflector)?

For those "odd microphone connectors" on an old sig genny, I assume you
mean the old amphenol pressure connector.  (Large screw-type connector with
center solder bump.)  If you can't find matching connectors, just slice a
bit of the nose off a PL-259.  The ring is the same thread and will happily
fit that old mike jack.  Hang a BNC female off the back of the shortened
PL-259.

Rich
================================================
      Boatanchor Pix website - KB8TAD
 http://ouvaxa.cats.ohiou.edu/~post/PIX/BA.html

visit the Museum of Radio and Technology website
   http://oak.cats.ohiou.edu/~postr/MRT/

>Hi all,
>
>We're gearing up for ISO 9000 certification, part of which is to document
>the calibration intervals of all of our instruments. We have one Heathkit,
>an IM-2410 frequency counter. I ended up buying the manual from W7FG (nicely
>bound, BTW) and used that to calibrate the counter as best as I could. Since
>it was designed long before ISO 9000 was even a gleam in anyone's eye,
>there's no recommended calibration interval, of course.
>
>I'd like to know if any of the former Heathkit employees on this list could
>give me an educated guess about the interval I should use. Most of our other
>instruments are one year or six months, but I noticed that both this counter
>and my IM-4100 counter at home were still pretty close to bang-on even

>Gordon Brandly


================================================
      Boatanchor Pix website - KB8TAD
 http://ouvaxa.cats.ohiou.edu/~post/PIX/BA.html

visit the Museum of Radio and Technology website
   http://oak.cats.ohiou.edu/~postr/MRT/

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