Hi! I have a lab for electronics repair and development. Mostly I am doing AF and RF amplifiers and radio receivers and transmitters. Both tube and solid state devices. On the first picture you can see an old tube tester and DIY Variac/isolation transformer on top of it. On the right is the signal source (HP signal generator) and DVM on top of it. In the second picture I have an HP audio analyzer and self-made signal tracer on top of it under testing.
My future plan is to develop a low noise amplifier for 10 kHz - 2 GHz band. This should be a very low noise figure comparable to state of the art amplifiers. The second project is to develop a very low distortion AF amplifier with distortion as low as the best audio amplifiers today.