Futaba Need A Little Help!

Franko48

New Member
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.
 

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Tony

Staff member
I'm going to suggest this from years of experience. If you care about your models, get a 2.4Ghz radio. There is far too much interference out there now days for those old am/fm Tx to work without glitching. And you can get them, full setups, for about $50.

It has been many years since I did anything with crystals, so I am not up on what is out there anymore. And I don't know of anyone on here that still uses crystals.
 

RandyDSok

Well-Known Member
Unfortunately... Tony is completely right on that recommendation. Even if you are completely out in the boonies and far from any town/city that may cause interference, That technology is just too dated to keep investing in it. In addition, you aren't suppose to simply change crystals in a transmitter or receiver... they must be tuned to the channel they are working on. Not to mention it's against the FCC rules to simply change out a crystal unless you are a certified tech that can also tune them when finished.

If you are sentimental about that radio for some reason ( I know my Dad is about his old retired radios, in fact, he may still have my old Hitec Prism 7 radio still, he only flew with his 2.4Ghz before he retired from flying RC ).... clean it up and put it on a shelf. Sentiment aside, don't keep throwing good money on old tech if you actually planning to use it.
 
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