Placement
The lapRF’s integrated patch antenna forms a beam which emits from the top of the product.
Ideal placement is in the center of the gate, but that does expose it to strikes from low-flying (high
speed) racers.
A small hole in the ground works well to protect it for grass tracks, or where this is not possible,
either protect the timer from strikes placing a solid object in front of it, or place the timer at a 45
degree angle from one corner of the gate.
When laying out tracks for RF timing, avoid parts of the track which come close to the timing gate to
prevent false readings.
For start grid positioning, place it at least 5m from the gate to ensure that the first crossing is
registered.
Battery Charging
The internal 18650 li-ion battery may be charged by simply connecting the puck to a USB power
source using a standard micro-B cable.
The maximum charge current is approx. 800mA, which results in a charge time of a little more than 3
hours.
For extended use, the 18650 may be easily swapped out and replaced with a fully charged pack.
WARNING: 18650 batteries can be extremely dangerous if mishandled. Keeping
unprotected batteries in your pocket, especially with other metallic objects, can result in an
explosion, and severe burns.
Always use a protective carrying case when transporting these cells.
When purchasing batteries, name-brand cells from reputable sources are highly recommended. Many
of the ‘budget’ cells available from online resellers may not be as safe as genuine cells.
Battery Life
The supplied 2600mAh cell should suffice for approx. 8 hours of racing. As the cell voltage reduces,
the gate will automatically turn off, after beeping to warn the user approx. 5 minutes before.
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