From frederick.somerville@gmail.com Wed Apr 17 03:33:11 2013
Subject:Re: Converting a 147 amp to 122 negative feedback standard - earlier distorsion

The 47 comes in two versions. Both have the secondary transformer negative feedback. The early version has no plate to gate feedback network but has the two plate to ground caps 5nf same as the 122.

Regards Frederick Somerville

Sent from my iPhone

On 17 Apr 2013, at 04:55, "palmquistdavid" wrote: