HOME · RADIOS · RECEIVERS · ACCESSORY · XBUS ACCESSORY · SERVOS · GYRO SYSTEM · TELEMETRY SENSOR · HELICOPTER · ABOUT US · COMPANY · CONTACT JR X-388s Transmitter Instruction Manual Radio Controlled Spares Accessories Product Identifiers. Brand. JR. MPN. X388S. eBay Product ID (ePID). Table I lists the channels and the aliases I found in the manual. In this article I will refer to receiver channels by their sailplane assignment followed by Most current JR and Spektrum heli radio X388S, XP783 and XP8103* have 120° CCPM to your radio's instruction manual for details."JR X388 General and heli" contains pages 1-76 and covers general information plus programming for aircraft, glider and heli. Unfortunately pages 77 &78 which Aircraft - General - Radio Equipment (FS/W) > Original Jr x 388 s manual. pval3's Avatar pval3 05:53 PM May 27, 2018. This is an original Jr 388 S manual in I need the Manual for a JR Max Computer radio, Any help would be great. Post #2 +1. Meantime, also for the benefit of others, the following