I was told by a guy that worked for Futaba that to use a R603FS it was only a software upgrade that needed to be done, but probably wouldn't be done. That way Futaba could sell more receivers. I was going to switch also, but I have 11 603fs receivers.I was told by Futaba that the 4PX will not support the R603FS receivers. Was going to up date from a 4PK to 4PX until I found this out.
Go to Towerhobbies.com on the tech Notes for 4PX4 Radio . It requires R304SB Receiver & they also show a few Compatable part number receivers that will Work. the required receiver R304SB is Only $49.00I see this radio has a dial knob on it. Does anyone know if the dial is able to be used as a 3rd channel? Are there any other 2.4 radios that have a dial knob that can be used as the 3rd channel?
Thanks,
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