Mixing brands is never a good idea (At least not when it's Tx and Rx)

If it's A JR Tx, spring for a JR Rx.

OR just pop for one of these - then you have everything

http://www.horizonhobby.com/Products...dID=JSP14000**

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Mike B.
AMA# 42400

"Those are my principles. If you don't like them, I have others." - Groucho Marx
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Already had matching Rx & Tx which came with the JR F400 and it did not work. Per advice, I bought Rx from cirrus.

Try another Cirrus Tx?