[Lowfer] frequency counter calibration
Ed Phillips
evp at pacbell.net
Sat Jan 26 17:50:12 EST 2013
Maybe I exaggerated a little bit or maybe your circuit board isn't quite
as tight in the case as mine is. I've changed the battery a couple of
times and last time around I put in some of the new 'eneloop' NiMH which
have a much longer self-discharge time and allegedly longer cycle time
than the older NiCd. Still usable a year after charge. They were
slightly bigger but I managed to get them in. I use thin bubblewrap
instead of that original tape.
No help one the reference signal pickup.
Ed
Douglas D. Williams wrote:
>It's not that bad, Ed. Take out the four screws and slide it apart. To
>remove the main circuit board, pull "outwards" on the edges of the
>aluminum case until the board falls out of the groove that is holding
>it in place. Mine "rattles" now because I didn't secure the new
>battery pack to the inside of the case with double sided sticky tape
>like they did at the factory. Yes, they secured the battery pack with
>double sided sticky tape.
>
>As for where to connect to the clock generator without loading the
>circuit....I have no idea. Far easier to find somone with a high
>stability reference and a small screwdriver. :-)
>
>73, Doug KB4OER
>
>
>
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