[Elecraft] KRX3 Mounting Problem
Don Wilhelm
w3fpr at embarqmail.com
Mon Dec 29 08:13:07 EST 2008
Ken,
Measure the standoffs mounted on the main board - they should be 7/8
inch and must have two split lockwashers under them - a total height
above the board not quite an inch. The height of these standoffs are
critical because the 1 1/2 inch screws only engage the threads for about
1/8 inch.
If those standoffs are correct, check all the standoffs that you mounted
in the KRX3 board and the number of lockwashers between the standoffs
and the board - these must be correct for everything to fit properly.
73,
Don W3FPR
Kenneth Lopez wrote:
> Howdy,
>
> I have nearly completed the KRX 3 installation, but have run into a
> physical mounting problem
>
> The two 1 1/2" 4-40 screws are not long enough to reach the stand offs
> below the KRX3 module
>
> I have VERY carefully followed instructions. There have been some
> missing standoffs which I had to supply from my own stock. As a
> result I have been careful to measure all of the screws and standoffs.
>
> It appears to me that many of the standoffs mounted on the RF board
> are too short.
>
> The KRX 3 module rests on the battery, and mates correctly with the
> pins on the mating boards. It has what looks to be the right amount
> of clearance above the RF board toroids.
>
> I took the side panel off to better see the clearances. It looks as
> though the supplied screws are at least 1/2" too short.
>
> What in heck is going on? Have I done something wrong?
>
> Or do I have the wrong screws supplied? Or the wrong standoffs?
>
> Cheers,
>
> Ken N6TZV
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