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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