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Old 02-04-2017, 10:18 PM   #85 (permalink)
gunny_jeeves
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With the module:

The ppm out wire goes to both the module and the sim jack.

Sim jack --> Phoenix might need one. It's possible that another sim might need another.

Module --> The module will likely require one or other also, but go figure... some may be just as happy with positive or negative.

Worst case you could use a DSMX module that needs ppm negative, an EZUhf module using ppm positive and a FrSky 16ch module using ppm 16. You'd just need to change that setting when you swap modules.
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