I was looking for a Futaba FP-R127DF receiver for my Tower Hobbies System 3000, 72.37MHZ FM transmitter and found several online today but I am thinking I may not need one since the HiTech micro receiver I found in my supplies today is what I must have bought years ago when I realized I did not get a receiver at the time I purchased the transmitter from a guy online. I do realize that I will need a channel 29 crystal for the receiver. All I see advertised are dual conversion crystals. I presume that is what all of those were at the time. Can anyone tell me if the standard dual conversion crystal will fit into a micro receiver? At present I need the receiver switch that has two wire coming off that are used for connecting the receiver to the airplane battery and also used to connect it to a battery charger when not flying to recharge the airplane battery. From what I was told this TX was made for Tower Hobbies by Futaba. I found a dual conversion channel 29 crystal online today. Can anyone tell me is a dual conversion crystal what was always used on these units? All I know is that on the back of my TX it has 29 on the back to signify the channel but I am unable to get into the transmitter to see what it looks like. So, I am assuming it also is using a dual conversion crystal. Any help or advice is greatly appreciated.