[arm-allstar] I think I found a new BF-888s board, help finding COS

[Andrew Hull]

Hello All,
I'm in the process of building a simplex node (RA-40 & BF-888s).

The BF-888s that I received has a date stamp on the board of 2017-11-04. I
believe that this is an updated revision from the board that Chris Hood
documents here:
http://www.chrishoodblog.com/allstar-node-with-bf-888s-short-board/

The design looks similar enough that the RX Audio, PTT, and Mic Audio
appear to be in the same places. However, I'm at a loss for COS.

Has anyone already solved the mystery for this revision? My Google attempts
have turned up nothing.

If not, could anyone offer some advice on how to find it myself? I consider
myself in the "knows enough to be dangerous" category of low level
electronics. So, with a friendly shove in the right direction, I hope I can
find it.

Here's a photo of my board. I haven't taken it off the heatsink to get a
look at the other side.
https://photos.app.goo.gl/pcnRfK2X7Pt8HhXKA

Thank you!!

73
Andy Hull
KE8HEV

--
Andy Hull

[Any errors in spelling, fact, or tact are transmission errors]