new JR Crystal does not work, why?
I am running JR radio servos and receivers. I just ordered some new crystals to install into some of the other receivers. For some reason they don't work.
The frequency I am on is 72.570 and the new crystals I ordered are the same numbers. But one thing I can see that is different is they are in a red case instead of grey. Also they have a gold label on them and it says FM Rx DC 72.570. The other set of crystals do not say DC on them and also on the 3 dots the last dot is black. On this new set I have the second dot is black.
The pack they came in says (JRPXDR) FM/ PCM Dual Conversion Crystal. What in the world does this mean? Is there something I need to do to get them to work or are these the wrong ones?
Also the radio I am using is the JR X783.
Any thoughts?