Friday 27 November 2015

New BPFs

Trolling around the web I found a new configuration for BPFs. A couple of coils and three capacitors make a rather good response. Here's the design, simulated in LTSpice, for 20m and 40m.

20m

20mf

40m

40mf



These could be good for both RX and TX, the skirts are narrow and the central loss is zero.

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