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Date Posted by Category User IP

2012-10-08 (UTC)

W6WO

Filters

Pro-built DSP Filter

IMHO This is a CW audio filter like no other and after 50 years of CW I do not make this claim idly.If you have a top of the line radio it may be overkill but if not you can dramatically upgrade your radio.It is designed and built to professional standards and is to be inserted between your radio and headphones. From the image you can see that it is fixed-tuned at either 500 or 800Hz and has a bypass switch. For years I used it with a TenTec Omni 6 with 2-250 Hz IF filters in tandem. To give you an idea of its selectivity, at 150 Hz off center the Omni response is 20dB down while this filter is 90 dB down. Its has negligible internal noise and high dynamic range meaning it is virtually free of audible noise and distortion. The dimensions are 6.0x2.4x3.5 inches. I invite you to add state of the art selectivity to an old radio. My price for this item is $75 I will do my best to answer questions but will not supply the firmware code.

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