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I have used the tone generator in a pinch. Normally I’ll use my Rigol on the bench.


The other thing I’ve used is CommTekk’s SINAD. Unfortunately, it’s not a “smartphone” or “tablet” tool or ap. But, it does a good job as a receiver alignment tool. On my main bench, I’ll use my old SINADDER 3 and HP RF generator. Both can cost some dough and the Hp is Yuge.  The software is cheap and takes a computer you probably already have.