I am beside myself that I cannot get this simple circuit doing something with the ubitx. I am starting with the simple version with a single MOSFET, and I may add the series one later.
I built one unit - nada. So I build a second one, and left off the MOSFET. I have its input attached to high side of the volume control pot (I think it is 10k in the Sunil case version), the ground attached to a connector in the closest corner of the board, and 5 volts from the raduino. No matter how huge the signal -- I get no rectified voltage output. What could I be doing wrong? With hundreds of these boards in uBITX I am surprised by my result thus far.
I am using a 2n2222A for the NPN, I have tried 3 different devices. Yes the diodes each work on the DVM, and they are proper orientation.
I also could not get the VK3YE AGC to work either. The ubitx receives wonderfully and I am testing on 40m.
PS - I do have a hybrid cascode but I am thinking to use it in a homebrew Rx -- not sure I wish to 'break' one of the bidirectional amplifiers here. my goal is just to AGC the very largest signals.