[R-390] R-390A s/n improvement 6HA5 mixer

[Larry H]

Hi all,  Here's a link to a picture of the unit I constructed and the schematic of the adapter. 
     http://s31.postimg.org/pywspdfgr/IMG_7165s.jpg     http://s31.postimg.org/xwkiak4nf/IMG_7168s.jpg
I have an extra one, so if someone would like to try it, I'll send it to you for postage.  I only ask that you take measurements before and after and post the results here.  If interested, please contact me offline.
Regards, Larry