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ACOMS crystals help 5 years 3 hours ago #55005

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Hi,
I'm new to Tamiya RC.
I have an ACOMS 27MHz receiver in the car with a 27.255Mhz blue crystal.
The controller has a missing crystal. Can I buy and use a pair of 50Mhz crystals in the transmitter and receiver? Would it work, or must I use 27MHz?

Thanks

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ACOMS crystals help 5 years 3 hours ago #55006

Welcome. You must use a 27mhz similar tx crystal.
A small advice, buy a new pair tx rx crystals in 27 am range.

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ACOMS crystals help 5 years 3 hours ago #55007

AM if your radio is in AM band or fm if fm band.

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ACOMS crystals help 5 years 3 hours ago #55008

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Thanks for your quick reply!!
Are there different versions/frequencies of 27MHz? How would I race the car against others if they are also 27Mhz?
Thank you

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ACOMS crystals help 5 years 1 hour ago #55018

In theory, you should be quite with 2 frequencies under or upper another guy in the same band.
But with modern technology, you should use a 2,4ghz radio set. No more interférences and a radio set is cheap (less than 30€ for a set without servo)

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ACOMS crystals help 4 years 11 months ago #55057

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If there were 4 people racing, could they use the following bands, or would they interfere with each other:

27.055MHz
27.095MHz
27.125MHz
27.255MHz

Thank you!

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ACOMS crystals help 4 years 11 months ago #55060

If there were 4 people racing, could they use the following bands or would they interfere which other:

27.055MHz
37.095MHz
27.125MHz
27.255MHz

Thank you!


The 37.095 can't be used on the the 27mHz system.
But 26.995 will work.

And make sure they are for AM or FM systems.
Both receiver, transmitter and crystals needs to be either AM or FM.

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ACOMS crystals help 4 years 11 months ago #55061

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I made a typo which I've now corrected!

So 4 RC cars using those frequencies can race together, no problems?

Thanks

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ACOMS crystals help 4 years 11 months ago #55062

It should be ok

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