Review on AD603 Variable Amplifier Voltage Adjustable by Jenna Hawkins

Name: AD603 Variable Amplifier Voltage Adjustable
Item: AD603 Variable Amplifier Voltage Adjustable
Rating: 5

November 11, 2022

High Quality PCB >> INCLUDES WITH DOCUMENT

I was pleasantly surprised by the high quality of the circuit board. Received ahead of scheduled delivery date (via Revain). Well designed RF circuit with curved traces for use on HF/VHF frequencies. The seller provided documentation in the form of a schematic diagram and a picture of the circuit board at a competitive price. I honestly didn't expect any documentation with a board from China. The seller even provided mounting hardware! Overall very pleasantly surprised! I'm not sure why it's listed under "Audio"!

Pros

It provides precise pin-selectable gain from 11dB to +31dB at 90MHz bandwidth, +9dB to +51dB at 9MHz bandwidth, and every gain range in between with an external resistor.

Cons