The ADF4351 PLL needs a full TTL level at 50OHm in the 10MHz reference. The internal TCXO delivers 5V pk at the ADF reference port. Then the resulting signal at 1296 / 1152 MHz is a clean small carrier about 60dB S/N at the SDR RTL stick Using 400mV tt clean sinus signal from the amplified GPSDO ( 40mV pk) gave a broad raspy tone at the output port of the ADF I tried a MMIC demo ampl. with the MAR6 and INA10386 DC to 2GHz broadband amps got a clean 40mV pk 10MHz at the input of the INA measuring 5V DC supply , 2V bias at the output pin and 0.2V bias at the input pin of the INA10386, normal levels. 40mV tt at the input resulting in 0V out.. coupling C 10nF L 10uH Why this MMIC do not work for 10MHz ? i do not know yet maybe my 10MHz driving issue can be solved by a simple opamp or an other discrete part amplifier like the one below optimised in Mult...
Ham radio in JO33hg31 53.15N 6.35E