Two years and going on my first T-Rex and Electron 6. Initially glitched till I installed a ferrite toroid on the ESC to RX cable. Two years of flying glitch free ever since.
On a side note, I agree do NOT use an Electron 6 in a T-Rex
Been flying an Electron 6 in a Kyosho EP400 for over a year, no glitches there either.
they just have to be negative shift
The crystal has nothing to do with "shift". They are neither positve or negative, they simply are good at oscillating at a fixed, fairly precise frequency over temperature and voltage excursions. The "shift" is a function of the design of the receiver's discriminator or ratio detector. That has nothing to do with the crystal frequency.
As for "a crystal is a crystal" -- well, not exactly. Oscillator circuits are designed with a specific set of crystal parameters in mind, one of them being the actual center frequency. But the crystal itself has its own set of electrical parameters, and may be designed to operated correctly in series-resonant mode, or parallel-resonant mode, and generally the oscillator circuit has a few small value capacitors sprinkled around it as the crystal is also designed to work with a specific load capacitance, among other things. A crystal MAY work in a circuit not designed for it. But, you always run the risk that it will occasionally not start up and run, may start up and run in the wrong overtone mode, or may work just fine, but the start-up characteristics of the circuit, along with the power levels used to drive the crystal can cause microfractures in the crystal (if it's not designed for those levels), usually around the point where the wire leads interface to the plated contact area on the crystal. These fractures as a minimum may eventually lead to flat out mechanical failure, or cause the crystal to behave in unpredictable fashion. It's so easy to buy the right crystal when you pick up a new receiver. The right crystal is much cheaper than the occasional unexplained crash.
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