Increasing Bluetooth Range
The internal bluetooth module uses a self-adhesive dipole antenna, fixed to the inside of the product.
This antenna uses a standard U.FL connector, which may be removed, and replaced with an external
antenna, by means of a 10cm U.FL to bulkhead SMA cable.
When disassembling the case, a small plastic ‘blanking plate’ may be removed after opening the case
of the LapRF, to open up the hole through which to secure the SMA connector.
Do not try to remove this with a knife from the outside of the box!, the part slides out easily when the box is
opened.
For the antenna, the FatShark 2.4GHz dipole works well:
http://www.getfpv.com/2-4-ghz-2-5-dbi-antenna-tested.html
And for the required cable, U.FL to SMA:
https://www.digikey.com/product-detail/en/amphenol-rf-division/336313-12-0150/ARF2362-ND/
5417988
Note: ImmersionRC will be supplying a kit with the required antenna and cable in the near future, but in the
interest of speed to market, the above combination will work well.
Another Note: We know of no issue/damage if the puck is powered up without the external bluetooth
antenna connected.
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