Re: New VK4PLN Audio Daughter Board + BCI
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Hey what about a preamp for 6-15 meters? I have a nice design for one using a PGA-103+ … only 12 parts if you include the bypass relay…
From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Nick VK4PLN
Sent: Wednesday, May 30, 2018 8:05 PM
Subject: [BITX20] New VK4PLN Audio Daughter Board + BCI
I am working on a new board that will give a few extra features to stock uBitx.
Its an Audio board providing easy access to Audio I/O pins. (add in your own AGC board, External amplifier...)
A place for an SSM2167 Mic Pre-amp. (with filtering for feedback and shutdown on TX)
Simple 4 component PTT POP fix. (BS170)
Switchable 200hz CW filter. (LM324)
and a bonus Snap off section with a 3.5MHZ BCI filter for the RX chain.
Here is a pre-view, NOTE this is a WORK-IN-PROGRESS.
Suggestions and corrections welcome.
73 Nick VK4PLN
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