[hpsdr] Magister - getting the mic to work

[Bill Tracey]

The mic is not working because the I2C bus from Magister is not 
connected to the Atlas bus by default.    This causes the 
initialization of the codec on Penelope to fail, and no 
initialization means no mic.

Easy to fix - shorting blocks need to be added to two jumpers on 
Magister    On my Rev A board (pre production, but I believe the 
production boards are pretty much the same) the jumpers are to the 
left of U1 when looking at the top of the board with the Atlas 
connector to the bottom. The silkscreen says I2C to Atlas and the 
jumpers are labeled SCL and SDA.   Horizontally adjacent pins should 
be shorted by a shorting block.  If you don't have shorting blocks on 
hand I'd suggest scrounging  some off old PC cards.

Cheers,

Bill (kd5tfd)

At 12:21 PM 1/22/2010, k1rqg at aol.com wrote:
>***** High Performance Software Defined Radio Discussion List *****
>
>
>I received Magister today and replaced OZY with it and made no other changes.
>It appears to work fine on receive and CW transmit, however, it does NOT work
>on SSB. No audio indication of any sort. I go to Test and run TONE 
>out etc and
>that works, but no Audio out from Mic.
>
>I am running KD5TFD 24 Dec2009
>Ozy FX2 20090524
>Ozy: 17
>Mercury: 29
>Penelope: 12
>
>Any one else seeing this?
>
>73 and thanks to all for your efforts!
>
>Joe K1RQG