Last year my buddy ask me why he could not use his other reg 75mhz crystals on his Vex transmitter as he wanted to have more feq's to use. So I took the vex plastic crystal case apart and made a quick and dirty adapter with the parts I had on hand. We wanted to see if the reg crystals would work. Yes they do. Please note this was just a prototype. We made a better one later.
Vex TX crystal adapter
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I don't have the final one with me as my friend has it and uses it. This is what I did for the final version. For the final version I bought some crystal sockets and cut the rear of the case. You see in the picture I use a pencil to show you were I cut the hole to allow the crystal to slide in thru the back. The other pictures show how the Crystal socket is in the inside of the case. I glued the socket down in the case.
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One of the main problems my friend had, was when he went to sub events big and small is that people with Vex radios really only have 4 channels to work with. Yes Vex did come out with 4 more channels, but you rarely can find them for sale. When people go to sub Events and more then 4 people have Vex radios, you may have to wait to get your boat in the water. With this you can buy more Crystals on ebay on channels Vex does not offer so more subs can be in the water at the same time. Please note I only made this for my friend as he nagged me about it. I do have 3 new Vex radios, but those are back ups if all my Futaba radios die all at the same time.Comment
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Anyone do a schematic of the VEX transmitter board yet?
I'd hate to put the effort in and one already exists that can be shared.
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