Wednesday, December 15, 2021

PGA103+ Ultra Linear Low Noise Monolithic Amplifier

Had this little device for some time, an offer from a fellow ham some time ago (thank you Allan).

Schematic used is similar to the datasheet at:

with small changes (similar to, in the implementation I didn't included the front end diodes:

  The PCB was done with very few resources so it had to be tinned.

Basically made with a mix of vinegar and oxygenated water

On the sweep on the spectrum analyzer this is what you get.

 Will try this further on as fronted for a VHF/UHF radio.

 Other sources of information with more comprehensive details here: 

(includes an HPF design for 130Mhz)

Have a great day!

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