MMCX, PM3, MM100, PM100, PM200 Antenna Connector Nut Notes

Help! I lost the antenna connector nut on my (pick one: MMCE, MMCX, MM100, PM100, PM200) GPS Receiver!

The antenna nut is critical piece of the receiver. Without it, the connector will push into the body. The body will not be watertight. You won't be able to use your device.

If you lost the nut, then you could send the receiver back to the factory for repair, however it will cost you about $250.

Here is some background information:


The connector on a PM100, with .LC style nut shown


What the nut screws on to


How this fits into a receiver body (MMCX in this case)

The connector is a Lemo connector part number EPE.00.250.NTN. You can find the connector on the top of page 18 in the [ Lemo Catalog ].

The nut is shown on page 30 of the same [ Lemo Catalog ].

The nut is a M7 (7 mm) by 1/2 mm thread, panel nut. It is doubtful that you can purchase this nut from a secondary source (I checked all the nut and bolt shops here in SLC with no success.)

The part description is "GEC Conical nut" and the part number is shown as GEC.00.240.LN:

I believe the part number is printed incorrectly in the catalog and should actually be: GEC.00.240.LC.

You can purchase this nut directly from Mouser: [ GEC.00.240.LC ]

If conical nuts are out of stock, consider purchasing the hex nut version from Mouser: [ GEC.00.240.LN ]:

or the notched version [ GEG.00.240.LC ]:

Igage also maintains a limited stock of these nuts. Call us for immediate shipping.

Mark Silver
10 August, 2011