Re: Broadcast band Interference Filter for Cricket 80A

Chip Stratton AE5KA

The BCI filter from QRPMe does a good job for the Cricket. At 3580 it is just about transparent to the Cricket. It uses3 caps and 2 toroids.


On Wed, Feb 28, 2018 at 3:36 PM, nm0s_qrp via Groups.Io <ai9e_qrp@...> wrote:
A quick test you can run, if you have an antenna tuner that uses two variable Cs and a switched L (like the 4SQRP Tuner), this is a high pass filter type circuit by itself.  Just put the tuner in line, you should drop the BCB interference by 30 - 40 dB, and be able to tune it to keep your power output from being affected.

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