Alan,
tnx for the fast reply.
The -20 dBm is measured with a 200 MHz scope: 60 mVpp sine at ANT -> "true" power and is verified with an R&S FPC1000 Spectrum analyzer.
Mixer works fine, and TX IRR is better than -50 dB. And anyway, spur is still present with QSE mixer disabled and even disconnected from following T2 xfrm!
Guess, I will have to live with it.
73 Felix DB9FN
