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Re: My PA0FRI active loop receiving antenna


 

On Tue, Jan 28, 2025 at 11:42 PM, Fred M wrote:
I am not sure wether this proves true in general terms. The CMRR of the LZ1AQ type amplifier depends on the symmetry of the pcb-layout, the gain balance, the balance of the Push-Pull transformer and the performance of the common-mode choke (Balun) at the coaxial output.
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Hi Fred, Good point. I agree with you. However, the same person (me) wound the output transformers and laid out the PCBs (as a smorgasbord on one panel).? All things being equal, the differential amp has an edge over the common base where CMRR is concerned.?
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