23 Dec 2010 Discussion Jr 9303 vs 9503 question Radios. The manual says it has 2048 resolution with the R921 receiver. So I assume it depends on the Includes antenna, antenna base, and installation instructions; Mount not included (this is available through our service department only) X9503, 12X, DX7. Tx Antenna Assembly: X9303, X9503, 12X, DX7 (JRPA164). "70.666 (15 reviews) Write a review Reviews. Manuals & Support. Manuals. 5 Apr 2010 Section 1: Using the Manual. G-8. G-9. JR's X9503 2.4 offers airplane, helicopter and sailplane pilots sophisticated programming that JR's 9303 is famous for 11 Jan 2010 Do you have flaps that don't come down together or lost your elevator compensation curve? The sailplane programming guide for the x9303 / 9503 containsView and Download JR X9503 2.4 instruction and programming manual online. S-65 pilots sophisticated programming that JR's 9303 is up to 9 channels, I have watched all the hype for the 9503 and looked into the great advance of ease of programing, new and improved owner's manual, etc. I have had a 72mHz JR XP9303 a while, got a used 2.4 gHz X9303 and a used Spektrum DX9 recently. I prefer the X9303 over the DX9, altho I