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Old 01-28-2003, 04:25 PM
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Join Date: Dec 2001
Location: Kingman, AZ
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Default frequency compatibility?

Airtronics and JR use positive modulation shift. Futaba and Hitec use negative modulation shift. therefore your vanguard and the r600 are compatable. Do not change the tx frequency (which is illegal in the US) instead change the rx (which is legal) and only use the same brand crystal as the rx in this case JR.

Some Tx and Rx are shift selectable which makes them compatable with all brands. In the case of PCM radios there is no interbrand compatability.

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