It can be confusing. HL’s 6.0, 6.1 & 7.0 are all cross compatible. However, the RX18 7.0 is old technology and doesn’t bind with the modern radios. You’ll need to buy a 6.0 or higher board, replace the RX with it, then you can use your controller. Bind instructions are in the manual. If your other tanks are RX18, someone else will have to answer that.
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