Very clean operation
Did you have problems with the cheap Chinese board too? I had spurs as bad as -40 dBc at select freqs between 45 and 75 MHz. I quickly connected one of these, and performed an SA test at 50.1 MHz, 1 MHz span and 10 Hz RBW. PLL sideband spurs at well below -70 dBc!! Excellent board, costs a bit more but well worth it if you're a discerning user. 73.
Kris de Vos